Ubigi vs Nomad for Japan: Prices, Networks, Unlimited Data, Coverage, and Speed
Ubigi and Nomad are two of the easiest Japan travel eSIMs to compare. Both are reasonably priced, support 5G and hotspot tethering, and offer Unlimited options.
The simplest way to frame the difference is this: Ubigi is better suited to travelers who care more about the Japanese networks they can access and coverage outside the biggest cities. Nomad is better suited to travelers who want more data for the money.
The biggest differences show up in pricing, larger 10GB / 20GB / 50GB plans, how Unlimited works, which Japanese networks each service can use, travel in regional or mountainous areas, and features such as top-ups and eSIM reuse.
In Project Torii’s five-provider comparison, our basic split is similar: first-time visitors focused on Maps and translation → Ubigi; travelers who use social media often or expect to need 10GB+ → Nomad; travelers spending more time in regional or nature-heavy areas → Ubigi.
This article answers the practical question: if you are choosing between Ubigi and Nomad for a trip to Japan, which one fits your trip better?
Affiliate disclosure: Some links on this page are affiliate links. If you make a purchase through them, Project Torii may earn a commission at no extra cost to you. This does not affect our recommendations.
Contents
1. Quick Verdict: Ubigi vs Nomad for Japan
2. Ubigi vs Nomad in 30 Seconds
3. The Biggest Difference: Ubigi for Network Access, Nomad for Price and Data
6. Which Is Better for Unlimited Data?
7. Which Japanese Networks Do They Use?
8. Which Is Better for Rural and Mountainous Japan?
10. Which Is Better on the Shinkansen?
11. Hotspot: Which Is Better for Sharing Data With a Laptop?
12. Which Is Better for a 7-, 10-, 14-, or 21-Day Trip?
13. Which Is Better for Heavy Social Media and Video Use?
14. Which Is Better for a First Trip to Japan?
1. Quick Verdict: Ubigi vs Nomad for Japan
Project Torii Quick Verdict
Ubigi → 🟢 Strong Choice — Best when network access and coverage matter more
Nomad → 🟢 Strong Choice — Best when price and data allowance matter more
Both are strong options for Japan, but they excel in different areas.
Ubigi is easier to recommend if you:
are visiting Japan for the first time
will travel beyond Tokyo, Kyoto, and Osaka
care about which Japanese networks your eSIM can access
like the idea of having access to NTT Docomo
expect around 10GB to be enough
are also considering Unlimited data
want an eSIM that is easy to keep and reuse on future international trips
want straightforward top-ups
Ubigi officially lists KDDI and NTT Docomo in Japan. Project Torii summarizes the independent network evidence as KDDI / au for reliability and consistency, and NTT Docomo for geographic coverage.
→ Choose Ubigi for your Japan trip
Nomad is easier to recommend if you:
care strongly about price
want to choose between 5GB, 10GB, 20GB, and 50GB-style allowances
expect to use 10GB or more
use social media frequently
are taking a longer trip
want a large amount of data at a lower price
may also use hotspot tethering
Nomad offers Japan plans from small allowances up to 50GB, and its current Japan page lists KDDI au and SoftBank.
The simplest split: want stronger underlying network access and a better rural-coverage case → Ubigi. Want more data for the money → Nomad.
2. Ubigi vs Nomad in 30 Seconds
| Feature | Ubigi Japan | Nomad Japan |
|---|---|---|
| Travel Match | Strong Choice | Strong Choice |
| Networks in Japan | KDDI / NTT Docomo | KDDI au / SoftBank* |
| 5G | Supported | Supported |
| Around 3GB | US$7.50 / 15 days | US$7 / 30 days |
| 10GB | US$16.50 / 30 days | About US$16 / 30 days |
| 20-25GB | 25GB US$32 | 20GB US$23 |
| 50GB | US$55 | US$35 |
| Unlimited | Available | Available |
| Hotspot / tethering | Supported | Supported |
| Data top-ups | Supported | Depends on plan |
| Install before travel | Yes | Yes |
| Reusing the eSIM | A clear strength | Depends on plan / trip |
| Biggest strength | Network / Coverage | Price / Data |
* Nomad’s current Japan page lists KDDI au and SoftBank, but underlying provider arrangements can change. Check the exact Network / Plan Details before buying.
30-second decision guide
First trip and you want the safer all-round shortlist → Ubigi
Need around 10GB → very close; Nomad is slightly cheaper on price alone
Need 20GB+ → Nomad
Spending more time in rural or nature-heavy areas → Ubigi
Need 50GB → Nomad
Want Unlimited for 7-15 days → compare Ubigi very seriously
3. The Biggest Difference: Ubigi for Network Access, Nomad for Price and Data
This is the most important section. Ubigi and Nomad are not a simple case of one being better and the other being worse.
Ubigi
Ubigi’s defining advantage in Japan is access to KDDI and NTT Docomo. In Project Torii’s network guide, NTT Docomo stands out most for coverage, while KDDI / au stands out for reliability and consistency. That makes Ubigi especially easy to shortlist if your itinerary extends beyond the biggest urban areas.
→ Docomo vs au vs SoftBank in Japan
Nomad
Nomad’s defining advantage is value: larger data allowances are often available at lower prices. Its 10GB, 20GB, and 50GB options are particularly competitive.
In practical terms: Ubigi → stronger network story and broader-trip balance. Nomad → more data for the price.
4. How Much Do They Cost?
The prices below are reference prices captured by Project Torii on August 11, 2026. Network listings and Unlimited conditions were rechecked on August 26, 2026. Promotions, plan lineups, and checkout pricing can change, so always confirm the final price before purchasing.
Ubigi
| Data | Validity | Reference price |
|---|---|---|
| 3GB | 15 days | US$7.50 |
| 10GB | 30 days | US$16.50 |
| 25GB | 30 days | US$32 |
| 50GB | 30 days | US$55 |
| Unlimited | 7 days | US$25 |
| Unlimited | 15 days | US$39 |
Nomad
| Data | Validity | Reference price |
|---|---|---|
| 1GB | 7 days | US$4 |
| 3GB | 30 days | US$7 |
| 5GB | 30 days | US$10 |
| 10GB | 30 days | About US$16 |
| 20GB | 30 days | US$23 |
| 50GB | 30 days | US$35 |
| Unlimited / Day Plan | Check current plan | Varies by plan |
Nomad’s pricing and plan lineup can change more frequently, so Project Torii does not treat one Unlimited / Day Plan price as a permanent specification. Check the exact Japan Plan Details and final checkout price when you buy.
5. Ubigi vs Nomad for 10GB
As of the August 11, 2026 evidence check, Ubigi’s 10GB / 30-day plan was US$16.50, while Nomad’s 10GB / 30-day plan was around US$16.
That is close enough that price alone should not decide the comparison.
If your trip is mostly Tokyo, Osaka, and Kyoto, either is easy to justify. You can lean Nomad on price or Ubigi on network access.
If your itinerary includes more regional travel, Ubigi’s KDDI + NTT Docomo combination becomes more meaningful.
10GB + mostly major cities → close to a tie. 10GB + more regional travel → Ubigi lean.
6. Which Is Better for Unlimited Data?
The following Unlimited conditions were rechecked on August 26, 2026. Do not compare the word “Unlimited” alone. Compare the full-speed allowance and what happens after you reach it.
Ubigi Unlimited
| Validity | Price | Full-speed allowance | After allowance |
|---|---|---|---|
| 7 days | US$25 | Up to 25GB | 2Mbps |
| 15 days | US$39 | Up to 30GB | 2Mbps |
Project Torii’s audited Ubigi Detailed Review confirmed the same structure during its August 2026 evidence review.
Nomad Unlimited / Day Plan
In Project Torii’s audited Nomad Japan review, the current Unlimited structure provided 2GB of high-speed data per 24-hour window. After that, speed dropped to 512kbps until the next 24-hour reset.
Nomad’s general Day Plan documentation also explains that the high-speed allowance resets every 24 hours and that connectivity continues at reduced speed after the allowance is used. Exact Japan durations, pricing, and allowance options can change, so the Plan Details shown at purchase take priority.
Which one wins for Unlimited?
Ubigi gives you a larger total full-speed allowance over the trip, followed by 2Mbps. Nomad uses a daily high-speed allowance model, and the audited Japan Unlimited plan dropped to 512kbps after 2GB in each 24-hour window.
Project Torii lean: if Unlimited is a major priority, Ubigi is particularly strong. The size of the full-speed allowance and the higher post-throttle speed both matter for video, heavy social media, and tethering.
7. Which Japanese Networks Do They Use?
Ubigi
Ubigi officially lists KDDI and NTT Docomo in Japan and supports 5G.
Nomad
Nomad’s current Japan page lists KDDI au and SoftBank. Because underlying provider arrangements can differ by plan, check the Network / Plan Details for the exact package you are buying.
Project Torii’s shorthand for travelers is: Docomo → Coverage; au / KDDI → Reliability / Consistency; SoftBank → Download Speed / Urban Performance. This is not an absolute ranking. Real-world performance varies by location, time of day, congestion, and other conditions.
→ Docomo vs au vs SoftBank in Japan
8. Which Is Better for Rural and Mountainous Japan?
Project Torii lean: Ubigi.
The main reason is access to NTT Docomo. In the Opensignal Japan report used by Project Torii, NTT Docomo led Coverage Experience and 5G Coverage Experience, while au led Reliability Experience and Consistent Quality.
That makes Ubigi especially attractive for itineraries involving:
Hokkaido
Tohoku
mountain areas
nature-heavy trips
travel between regional cities
itineraries with a lot of suburban or rural time
This does not mean Ubigi will work everywhere in Japan. If you are heading to a specific remote mountain area or island, check the official Japanese carrier coverage maps as well.
If your trip is mainly Tokyo, Osaka, and Kyoto, you do not need to over-weight the network difference.
9. Speed and 5G
Both services support 5G, but Project Torii does not claim that Ubigi is universally faster than Nomad or vice versa.
Actual performance can vary with the connected network, location, congestion, device, supported bands, and roaming / routing configuration.
We also do not take speed-test results from the underlying Japanese carrier and present them as if they were direct Ubigi or Nomad speed tests.
For that reason, Project Torii does not name a speed winner.
10. Which Is Better on the Shinkansen?
There is no clear winner.
On the Shinkansen, high speed, tunnels, mountainous sections, handovers between cell sites, and congestion can all cause temporary slowdowns or unstable connections. This applies to travel eSIMs generally, not just Ubigi or Nomad.
Project Torii Local Tip
Shinkansen Wi-Fi can be useful, but do not reduce your mobile-data allowance just because onboard Wi-Fi exists. Maps, train information, hotel reservations, and translation tools are important enough that having your own working mobile connection is the safer baseline.
If regional coverage matters as part of the same trip, Project Torii leans Ubigi — but that is not the same as claiming Ubigi is always faster on the Shinkansen.
11. Hotspot: Which Is Better for Sharing Data With a Laptop?
Hotspot, also called tethering, means sharing your phone’s mobile-data connection with a laptop, tablet, or another phone over Wi-Fi.
Ubigi
Ubigi supports data sharing on its regular data plans and Unlimited plans.
Nomad
Nomad also supports hotspot / tethering. On an Unlimited / Day Plan, however, data used by a laptop still comes out of the same high-speed allowance.
If you expect heavy laptop use, compare Ubigi Unlimited with one of Nomad’s larger fixed-data plans. A laptop can use a 2GB daily high-speed allowance surprisingly quickly.
12. Which Is Better for a 7-, 10-, 14-, or 21-Day Trip?
If you are wondering why Project Torii often uses about 5GB for 7 days or about 10GB for 14 days, start with our data-usage guide:
→ How much data do you need for Japan?
| Trip length | Project Torii planning baseline |
|---|---|
| 5 days | About 3GB |
| 7 days | About 5GB |
| 10 days | 5-10GB |
| 14 days | About 10GB |
| 21 days | 10-20GB |
7 days
For ordinary use, Nomad’s 5GB plan is easy to understand and competitively priced. If Unlimited matters more, Ubigi becomes especially attractive.
10 days
A practical baseline is 5-10GB. At 10GB, Ubigi and Nomad are priced very similarly. For a mostly urban trip, Nomad is easy to choose on price. If regional travel is a bigger part of the itinerary, lean Ubigi.
14 days
Around 10GB is a useful starting point for many travelers. If you use social media heavily, Nomad’s 20GB plan starts to show a clearer price advantage. If you want Unlimited instead, compare Ubigi’s larger full-speed allowance and 2Mbps post-throttle speed with Nomad’s daily-allowance structure.
21 days
A practical planning range is 10-20GB. For normal-to-heavy use, Nomad’s 20GB and 50GB plans are especially easy to shortlist.
Project Torii lean: 21 days + normal-to-heavy data use → Nomad.
13. Which Is Better for Heavy Social Media and Video Use?
If you expect your total use to stay somewhere around 20-50GB, Nomad is particularly strong because its larger fixed-data plans are aggressively priced.
If you specifically want Unlimited, Ubigi becomes more attractive. Its larger full-speed allowance and 2Mbps after the threshold can be more comfortable than the audited Nomad Unlimited structure of 2GB per 24 hours followed by 512kbps.
Large fixed allowance for less money → Nomad. Unlimited-first → Ubigi.
14. Which Is Better for a First Trip to Japan?
Project Torii lean: Ubigi.
Our Pillar guide also places Ubigi first for a typical 1-14 day first trip focused on Maps and translation, with Nomad as the alternative when price matters more.
The reason is balance: competitive pricing, a straightforward 10GB option, KDDI + NTT Docomo, Smartstart, top-ups, and easy eSIM reuse.
If your top priority is simply getting more data for less money, Nomad remains a very strong alternative — especially if you use social media heavily.
15. Setup, Top-Ups, and Reusing the eSIM on Future Trips
Ubigi
Ubigi offers Smartstart. You can install the eSIM before departure, and the validity period begins when you arrive and connect to a supported network in the destination.
You can keep the same eSIM installed and buy a new plan for a future supported destination. Ubigi also makes data top-ups straightforward in the app.
Nomad
Nomad can also be installed before travel. Activation deadlines, add-on availability, and the timing of add-on purchases depend on the exact plan, so check the Plan Details before buying.
If you want a clearly reusable eSIM profile across multiple future trips → Ubigi. If you mainly care about buying a simple plan for this Japan trip → either works.
16. Calls and SMS
Ubigi is data-only. It does not include a Japanese phone number, standard voice calls, or standard SMS.
For the Nomad Japan data plans compared here, do not assume a Japanese phone number or standard SMS is included either. Nomad offers some phone-number products in certain markets, which is another reason to check the exact Plan Details.
Both services can still run data-based apps such as WhatsApp, LINE, FaceTime, and Messenger.
17. Who Should Choose Ubigi?
first-time visitors to Japan
travelers spending time outside the biggest cities
people who care about underlying Japanese network access
travelers who specifically value access to NTT Docomo
people who expect around 10GB to be enough
travelers considering Unlimited
people who want to reuse the same eSIM on future trips
people who value simple top-ups
In one sentence: Ubigi is for travelers who want a well-balanced Japan eSIM and place extra value on the networks behind it.
18. Who Should Choose Nomad?
price-conscious travelers
people choosing between 5GB, 10GB, 20GB, and 50GB
frequent social-media users
travelers likely to need 10GB or more
people staying for two to three weeks
travelers who want a low-cost 50GB option
people who prefer a large fixed allowance over Unlimited
In one sentence: Nomad is for travelers who want larger data allowances at competitive prices.
19. Project Torii Verdict
We do not name one overall winner. Ubigi and Nomad are both Strong Choice options, but they are strong for different reasons.
Ubigi | Best for Network & Coverage
Its biggest advantage is the KDDI + NTT Docomo network combination. It is especially easy to shortlist for regional travel, while Smartstart, top-ups, and eSIM reuse also make it simple to live with. Its Unlimited terms are another strength.
Nomad | Best for Price & Data
Nomad is particularly strong for travelers who want 5GB, 10GB, 20GB, or 50GB at competitive prices. It is easy to recommend to social-media-heavy travelers and people staying for two to three weeks.
| Your trip | Project Torii choice |
|---|---|
| First trip to Japan | Ubigi |
| Mainly Maps and translation | Ubigi |
| Need 5GB | Nomad |
| Need 10GB | Close to a tie |
| Need 20GB+ | Nomad |
| Need 50GB | Nomad |
| Want Unlimited | Ubigi |
| Lots of rural / mountainous travel | Ubigi |
| Mostly Tokyo / Osaka / Kyoto | Nomad is fine on price |
| Heavy social media use | Nomad |
| Heavy hotspot use | Compare Ubigi Unlimited vs Nomad large fixed-data plans |
| Want to reuse the same eSIM on future international trips | Ubigi |
Project Torii Bottom Line
Choose Ubigi for the network story. Choose Nomad for price and data. Around 10GB, the prices are close enough that your itinerary and preferred network access matter more. As you move toward 20GB and 50GB, Nomad’s price advantage becomes much clearer. If Unlimited is the priority, Ubigi becomes especially compelling.
→ Compare the best eSIMs for Japan
→ Check Ubigi’s latest plans and prices
→ Check Nomad’s latest plans and prices
20. FAQ
Ubigi or Nomad for Japan: which is better?
Choose Ubigi if this is your first trip, you will travel beyond the biggest cities, or you care more about network access. Choose Nomad if price and data allowance matter more.
Which one is cheaper?
At around 3-10GB, the gap is small. At 20GB and above, Nomad’s price advantage becomes much more noticeable.
Which is better for 10GB?
Ubigi was US$16.50 and Nomad was around US$16 at the August 11, 2026 evidence check. That is effectively a tie: lean Nomad for price, Ubigi for more regional travel.
Which is better for 50GB?
Nomad was significantly cheaper at the August 11, 2026 evidence check. Always recheck current pricing before buying.
Which is better for Unlimited?
Project Torii leans Ubigi. Its 7-day Unlimited plan provides up to 25GB at full speed, then 2Mbps. The audited Nomad Japan Unlimited structure provides 2GB of high-speed data per 24-hour window, then 512kbps.
Which Japanese networks do they use?
Ubigi lists KDDI and NTT Docomo. Nomad’s current Japan page lists KDDI au and SoftBank.
Which is better for rural Japan?
Project Torii leans Ubigi because it can access NTT Docomo, which is a positive factor for geographic coverage.
What if I am only visiting Tokyo, Osaka, and Kyoto?
You do not need to overthink the network difference. Price and how much data you need may matter more.
Do both support 5G?
Yes. Actual 5G availability still depends on location, device, and network conditions.
Which is better on the Shinkansen?
There is no clear winner. High-speed travel, tunnels, mountainous sections, and congestion can affect either service.
Can I use hotspot / tethering?
Yes, both support it. On Nomad’s daily-allowance Unlimited structure, tethered usage also counts against the same high-speed allowance.
Do they include a Japanese phone number?
Ubigi is data-only. For the Nomad data plans compared here, do not assume a Japanese number is included; check the exact Plan Details.
21. Sources & Evidence
Project Torii prioritizes first-party provider information and audited internal Project Torii assets for this comparison.
Ubigi Official Information
Japan 3GB / 10GB / 25GB / 50GB plans
Japan Unlimited plans
KDDI / NTT Docomo
5G
Smartstart
Top-ups
Data sharing / tethering
eSIM reuse
Nomad Official Information
Japan fixed-data plans
Japan Unlimited / Day Plan terms
KDDI au / SoftBank
4G / 5G
Hotspot / tethering
Activation
Add-ons
Project Torii Internal Assets
eSIM Pillar
Ubigi Detailed Review
Nomad Detailed Review
Japan Mobile Networks
How Much Data Do You Need in Japan?
Network listings and Unlimited conditions rechecked: August 26, 2026. Reference prices captured: August 11, 2026.
Project Torii Editorial Note
Editorial Principle
Prices, plan lineups, networks, and Unlimited conditions can change. Project Torii does not treat the performance of the underlying Japanese carrier as identical to the real-world performance of a travel eSIM using that carrier. We also do not judge an Unlimited plan by the word “Unlimited” alone; the full-speed allowance and post-throttle speed matter.
Project Torii does not recommend an eSIM simply because it pays a higher affiliate commission. We separate official product information, independent network evidence, local experience, practical limitations, and price wherever possible.
Trust over commissions.
Source URLs — Editorial Reference
Ubigi Japan plans: https://cellulardata.ubigi.com/data-plans-and-coverage/ubigi-esim-data-plans/?one-off=on&monthly=on&annual=on&destination=jpn
Ubigi Help Center: https://cellulardata.ubigi.com/help-center/
Nomad Japan eSIM: https://www.nomadesim.com/japan-eSIM
Nomad Unlimited Plan Details: https://www.nomadesim.com/documents/data-plan-detail-unlimited
Opensignal Japan Mobile Network Experience — April 2026: https://insights.opensignal.com/reports/2026/04/japan/mobile-network-experience