Deciding between Yesim and Saily? 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: refund if it never connects, even after installing; and unused days refunded.
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Why SimbaSIM beats both Yesim and Saily
Truly unlimited — your data never stops
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.
No app or account needed
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.
Add days to the same eSIM
A new plan bought with the same email goes onto the eSIM you already have.
Yesim: Available for the US, Thailand, Turkey and Europe; not for Japan plans.
Exact 3, 7 and 14-day plans
The same three lengths in all 136 destinations.
Yesim: No unlimited plan for exactly 14 days in Europe.
Refund if it never connects, even after installing
Full refund if it will not install or never connects.
Yesim: Installing the eSIM counts as activation and ends refund eligibility.
Saily: May be considered for quality issues caused by Saily.
Unused days refunded
Unused days refunded within 30 days of purchase.
Yesim: Data or services used are not refunded.
Saily: No refund guarantee once activated.
24/7 chat without their app
24/7 chat on the website, no app or account.
Saily: Live chat only inside the Saily app.
Yesim vs Saily vs SimbaSIM, side by side
From each brand’s own website, help pages and terms, checked 3 October 2026.
Feature
SimbaSIM
Yesim
Saily
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
Yes
NoYou can buy on the website, but installation needs the Saily app.
Days start when you land
Yes
Yes
Yes
Add days to the same eSIM
Yes
PartlyAvailable for the US, Thailand, Turkey and Europe; not for Japan plans.
Yes
Exact 3, 7 and 14-day plans
Yes
NoNo unlimited plan for exactly 14 days in Europe.
Yes
Refund if it never connects, even after installing
Yes
NoInstalling the eSIM counts as activation and ends refund eligibility.
PartlyMay be considered for quality issues caused by Saily.
Unused days refunded
Yes
NoData or services used are not refunded.
NoNo refund guarantee once activated.
24/7 chat without their app
Yes
Yes
NoLive chat only inside the Saily app.
Boxes ticked
8 of 8
3 of 8
3 of 8
Yesim or Saily: which is better?
Yesim
Best for travellers whose trip is an odd number of days and who want to pay for exactly that.
Ahead of Saily on
No app or account needed
24/7 chat without their app
Before you buy
Installing the eSIM ends refund eligibility, and small refunds come back as store credit.
Japan plans cannot be topped up.
Recent reviewers report weak connections in some countries and slow refunds.
Refunds
Full refund within 30 days only if the plan was never activated — and installing the eSIM counts as activation. Refunds under €10 are paid as Ycoins credit.
Saily
Best for travellers happy to do everything in an app who want a highly rated, reusable eSIM.
Ahead of Yesim on
Add days to the same eSIM
Exact 3, 7 and 14-day plans
Before you buy
Installation and live chat both need the Saily app.
Saily warns its app and site may not load in Turkey.
No refund guarantee once the plan is activated.
Refunds
Full refund within 30 days if the eSIM was never installed or activated. Once activated, a refund is not guaranteed.
Or skip the trade-off: SimbaSIM
Truly unlimited data on every plan: 3, 7 or 14 days in 136 destinations
No app, no account — your eSIM is delivered in 1 minute
Days start when you land, and more days go onto the same eSIM
Full refund if it never connects; unused days refunded within 30 days
Yesim is ahead of Saily on no app or account needed and 24/7 chat without their app. Saily is ahead of Yesim on add days to the same eSIM; and exact 3, 7 and 14-day plans. Yesim suits travellers whose trip is an odd number of days and who want to pay for exactly that. Saily suits travellers happy to do everything in an app who want a highly rated, reusable eSIM. If you want every box ticked — truly unlimited data, no app, a refund if it never connects — SimbaSIM is the better pick than either.
Do Yesim and Saily need an app?+
Yesim can be used without its app. You can buy on the website, but installation needs the Saily app. SimbaSIM needs no app and no account: you buy on the website and your eSIM is delivered by email in 1 minute.
What are Yesim’s and Saily’s refund policies?+
Yesim: Full refund within 30 days only if the plan was never activated — and installing the eSIM counts as activation. Refunds under €10 are paid as Ycoins credit. Saily: Full refund within 30 days if the eSIM was never installed or activated. Once activated, a refund is not guaranteed. 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.
Is there a better alternative to Yesim and Saily?+
SimbaSIM. Every plan is truly unlimited data, and it gives you what neither Yesim nor Saily does: every plan is unlimited data; refund if it never connects, even after installing; and unused days refunded. Plans start at $12.90 for 3 days in 136 destinations.
Yesim and Saily are trademarks of their owners. SimbaSIM is not affiliated with or endorsed by either. Details about Yesim and Saily were taken from their own websites and terms on 3 October 2026 and may since have changed.
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