Updated September 28, 2026 · NomadCue Editorial Team
Ninja WiFi vs Sakura Mobile
Ninja WiFi
Higher score in this comparison
Sakura Mobile
Where Ninja WiFi and Sakura Mobile differ
| Compare | Ninja WiFiReviewVisitVisit | Sakura MobileReviewVisitVisit |
|---|---|---|
| Daily price | ¥440 | ¥299Lower |
| Data allowance | Unlimited plans sold with per-day caps 1GB-10GB (speed limited to 128kbps beyond the daily cap); Infinite plan no data limit; use over 15GB/day may suspend service | Unlimited |
| Devices connected | 2 | 15Higher |
| Pickup and delivery | Airport counter pickup (Narita T1/T2, Haneda T2/T3, Kansai T1/T2, Naha, Fukuoka) or courier delivery to hotel/accommodation; return at counter, by courier or airport return box | Airport pickup (Narita, Haneda, Kansai, Fukuoka, New Chitose), hotel or residence delivery, post office pickup nationwide; free return envelope to any Japan Post mailbox |
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Key differences
- Ninja WiFi scores higher overall: 9.0 vs 8.8.
- Daily price is lower at Sakura Mobile: ¥299 vs ¥440.
- Devices connected is higher at Sakura Mobile: 15 vs 2.
- Support channels: only Sakura Mobile offers Email.
Our verdict on each
Ninja WiFi
Ninja WiFi suits Japan trips where you would rather carry a device than install an app, and where daily price is the main thing you weigh. Daily price runs at ¥440, plans start from ¥770, and unlimited data is on the list.
Sakura Mobile
Sakura Mobile suits travelers whose whole trip sits in Japan, offering eSIM plans from ¥1,375 with unlimited data and a pocket WiFi option. It is a mvno on docomo, au and Softbank, but coverage is a single market and a fair use policy shapes what unlimited data means in practice.
Score breakdown
| Area | Ninja WiFi | Sakura Mobile |
|---|---|---|
| Cost | 9.7HigherDaily price sits at ¥440 from ¥770, ranking 11 of 59 brands on daily price. | 8.8 |
| Offer | 8.2Unlimited data is listed, but 2 devices at once and support limited to phone and help centre keep the offer narrow. | 9.0HigherPrices from ¥1,375 for eSIM and ¥299 a day for pocket WiFi with Unlimited data, instant activation, and coverage limited to 1 country. |
| Trust | Not confirmed | 8.3 |
Choosing between them
Pick Ninja WiFi if cost matter most.
Pick Sakura Mobile if offer, daily price, and devices connected matter most.
How the counts compare
| Fact | Ninja WiFi | Sakura Mobile |
|---|---|---|
| Daily price | ¥440 | ¥299 |
| Devices connected | 2 | 15 |
What we checked
Ninja WiFi
- ninjawifi.com: 7 facts, checked September 26, 2026
Sakura Mobile
- sakuramobile.jp: 8 facts, checked September 26, 2026
How they place
| Ranking | Ninja WiFi | Sakura Mobile |
|---|---|---|
| Travel SIMs and eSIMs | 71 of 926 | 84 of 926 |
| Travel eSIMs | 72 of 918 | 85 of 918 |
| Pocket WiFi rental | 9 of 193 | 13 of 193 |
Every fact side by side
| Fact | Ninja WiFi | Sakura Mobile |
|---|---|---|
| Legal entity | Vision Inc. | Og inc. |
| Headquarters | Japan | Japan |
| Founded | Not confirmed | 2014 |
| Support channels | Phone, Help centre | Email, Phone, Help centreCovers more |
eSIMs
| Fact | Ninja WiFi | Sakura Mobile |
|---|---|---|
| Price from | ¥770Lower | ¥1,375 |
| Countries covered | Not confirmed | 1 |
| Unlimited data | Yes | Yes |
| Hotspot sharing | Not confirmed | Yes |
| Region | Not confirmed | Local |
| Features | Unlimited data | Unlimited data, 5G, Hotspot, Instant activationCovers more |
| Audience | Not confirmed | Short trip, Long trip |
| Reference plan prices | Japan pocket WiFi unlimited $6.70 per day 7 days | Not confirmed |
| 5G | Not confirmed | Yes |
| Fair use policy | Excessive use may cause reduced speed | 3GB/day plans: speed limited to 200 Kbps after 3 GB per day; unlimited eSIM/SIM plans cap hotspot use per plan (2 GB on 1-day, 9 GB on 10-day, 30 GB on 31-day plan) |
| Networks | Not confirmed | Docomo, Au, Softbank |
| Top-ups | Not confirmed | Yes |
| Seller type | Not confirmed | Mvno |
Where each stands against the rest
| Fact | Ninja WiFi | Sakura Mobile | Median |
|---|---|---|---|
| Daily price | ¥440at the median | ¥299lowest quarter | ¥440 |
| Devices connected | 2lowest quarter | 15above the median | 10 |
Median across 62 listed travel providers.
Pros and cons
Ninja WiFi
Pros
- Daily price of ¥440 keeps a short Japan trip easy to budget.
- Unlimited data is on offer, listed as the unlimited data feature, and the capped plans slow down past the daily cap.
- Pickup at airport counters or courier delivery to your hotel, with a counter, courier or airport return box for the return.
Cons
- Support runs on phone and help centre only, with no chat or email listed for questions on the ground.
- Unlimited data comes with strings: past the daily cap the speed drops, and very heavy use in a day can suspend the service, with a fair use policy that says Excessive use may cause reduced speed.
- It is built for a single market, with JP as its home country, so it does not stretch beyond Japan.
Sakura Mobile
Pros
- Service runs on docomo, au and Softbank, the main domestic operators, so day-to-day connection comes from established networks
- The pocket WiFi is easy to get hold of: airport pickup, hotel or residence delivery and post office pickup nationwide, with a free return envelope
- eSIM plans from ¥1,375 pair unlimited data with hotspot sharing, and the pocket WiFi shares a connection across 15 devices
Cons
- Coverage is a single market: 1 country, so a multi-country itinerary needs another plan
- The fair use policy slows speed after a daily data threshold on capped plans and caps hotspot sharing by plan length, so unlimited data carries conditions
Who each suits
Ninja WiFi
Who it suits
- You land in Japan and want a device in your bag the same day, with airport counter pickup or courier delivery to your accommodation.
- You browse, stream and map all day and want unlimited data, with a daily cap you can live inside.
- You travel solo or as a pair, since the device handles 2 devices at once.
Who should look elsewhere
- WOM Chile, listed at CLP 3,990 a day, fits a Chile trip better than a Japan-only device.
- QCell, whose roaming data packages cover 50MB to 2GB per roaming data package, suits a traveller who wants data across markets rather than one home country.
Sakura Mobile
Who it suits
- Travelers on a Japan-only itinerary who want unlimited data without tracking a daily allowance
- Groups and families who need one pocket WiFi shared by many devices, delivered to a hotel or residence
- Short city breaks and longer stays alike, since short trip and long trip plans cover both and top-ups can extend a stay
Who should look elsewhere
- Multi-country trips: Zwitchy covers 200 countries, far beyond a single market
- Buyers shopping the cheapest entry point: eSIMGo.is starts at $0.99
- Anyone heading to a different destination: SimToIsrael is priced from $25
Current offers
Sakura Mobile
Current offer
Discount code
1,000 JPY off monthly plan activation with coupon code: 1,000 JPY
Coupon code must be entered during purchase of Monthly SIMs/eSIMs or Home Internet; shown as a seasonal banner
Source, checked September 26, 2026
Discount code
Buy 2 or more eSIMs and get 10% off: 10%
Group purchase of 2 or more travel eSIMs; discount applies automatically
Source, checked September 26, 2026
Discount code
Buy 2 or more to get 500 JPY off each: 500 JPY per eSIM
Multi-purchase discount on travel eSIM; banner on the fixed data plan landing page
Source, checked September 26, 2026
Country by country
| Country | Ninja WiFi | Sakura Mobile |
|---|---|---|
| Japan | Yes | No |
Questions about each
Ninja WiFi
How much does Ninja WiFi cost per day?+
Plans run at ¥440 a day, with the entry point quoted at ¥770. Unlimited data sits inside the range rather than being sold as a separate data top-up, so the daily rate carries the whole cost. Pick the plan length that matches how long you are in the country.
Is the data allowance really unlimited?+
Unlimited data is listed as available, and it shows as the unlimited data feature. The catch sits in the allowance: the capped plans reduce speed once you pass the daily cap, and use beyond a very heavy daily total may suspend the service. So read unlimited as generous rather than endless.
Sakura Mobile
What does Sakura Mobile cost for a Japan trip?+
eSIM plans start at ¥1,375, and the pocket WiFi runs at ¥299 a day with Unlimited data for the whole rental. The eSIM plans list unlimited data, 5g and hotspot, so a traveler can pick an instant activation eSIM instead of collecting a device.
Is the unlimited data really unlimited?+
Hotspot sharing is listed in the unlimited data, 5g and hotspot list, yet the fair use policy slows speed once a daily data threshold is passed on capped plans, and unlimited eSIM and SIM plans cap hotspot sharing by plan length. Heavy tethering is the part most likely to slow down or stop.