Truly unlimited — your data never stops
Deciding between Saily and Ubigi? Here is how they compare, point by point — and why SimbaSIM is the better pick than either: truly unlimited data that never stops, plus what neither of them gives you: unused days refunded and 24/7 chat without their app.
4.7564 traveller reviews
Rated excellentby our travellers
Every plan is unlimited data for its whole length, in all 136 destinations. No data packs to size, no top-ups to remember, no overage charges.
Bought on the website; the QR code arrives by email. No app, no account.
Saily: You can buy on the website, but installation needs the Saily app.
The same three lengths in all 136 destinations.
Ubigi: No unlimited plan for exactly 3 days in Japan, 7 days in Japan, 14 days in Japan.
Full refund if it will not install or never connects.
Saily: May be considered for quality issues caused by Saily.
Unused days refunded within 30 days of purchase.
Saily: No refund guarantee once activated.
Ubigi: No refund once you have started using it.
24/7 chat on the website, no app or account.
Saily: Live chat only inside the Saily app.
Ubigi: Support starts with a web form; WhatsApp is an AI assistant.
From each brand’s own website, help pages and terms, checked 3 October 2026.
| Feature | SimbaSIM | Saily | Ubigi |
|---|---|---|---|
| Every plan is unlimited data | Yes | NoAlso sells fixed-data packs you have to size. | NoAlso sells fixed-data packs you have to size. |
| No app or account needed | Yes | NoYou can buy on the website, but installation needs the Saily app. | Yes |
| Days start when you land | Yes | Yes | Yes |
| Add days to the same eSIM | Yes | Yes | Yes |
| Exact 3, 7 and 14-day plans | Yes | Yes | NoNo unlimited plan for exactly 3 days in Japan, 7 days in Japan, 14 days in Japan. |
| Refund if it never connects, even after installing | Yes | PartlyMay be considered for quality issues caused by Saily. | Yes |
| Unused days refunded | Yes | NoNo refund guarantee once activated. | NoNo refund once you have started using it. |
| 24/7 chat without their app | Yes | NoLive chat only inside the Saily app. | NoSupport starts with a web form; WhatsApp is an AI assistant. |
| Boxes ticked | 8 of 8 | 3 of 8 | 4 of 8 |
Best for travellers happy to do everything in an app who want a highly rated, reusable eSIM.
Full refund within 30 days if the eSIM was never installed or activated. Once activated, a refund is not guaranteed.
Best for frequent travellers who want one carrier-backed eSIM to top up trip after trip.
Refund only if no data has been used, requested within 14 business days of purchase. The terms are stricter: a plan cannot be refunded once bought.
Saily is ahead of Ubigi on exact 3, 7 and 14-day plans. Ubigi is ahead of Saily on no app or account needed; and refund if it never connects, even after installing. Saily suits travellers happy to do everything in an app who want a highly rated, reusable eSIM. Ubigi suits frequent travellers who want one carrier-backed eSIM to top up trip after trip. If you want every box ticked — truly unlimited data, no app, a refund if it never connects — SimbaSIM is the better pick than either.
You can buy on the website, but installation needs the Saily app. Ubigi can be used without its app. SimbaSIM needs no app and no account: you buy on the website and your eSIM is delivered by email in 1 minute.
Saily: Full refund within 30 days if the eSIM was never installed or activated. Once activated, a refund is not guaranteed. Ubigi: Refund only if no data has been used, requested within 14 business days of purchase. The terms are stricter: a plan cannot be refunded once bought. SimbaSIM refunds in full if the eSIM will not install or never connects — even after you have installed it — and refunds unused days within 30 days of purchase.
SimbaSIM. Every plan is truly unlimited data, and it gives you what neither Saily nor Ubigi does: every plan is unlimited data, unused days refunded and 24/7 chat without their app. Plans start at $12.90 for 3 days in 136 destinations.
Saily and Ubigi are trademarks of their owners. SimbaSIM is not affiliated with or endorsed by either. Details about Saily and Ubigi were taken from their own websites and terms on 3 October 2026 and may since have changed.
