Airalo vs Saily: which eSIM for Slovakia and Europe

Who is behind each eSIM

Saily is owned by Nord Security, which also makes NordVPN. It includes an ad blocker and web protection in the app, according to comparison guides. Airalo is a larger eSIM marketplace with local, regional and global plans, and it lists a global option covering around 130 countries. Both claim 200 or more destinations in total.

Plan types

Both offer single-country eSIMs and regional Europe eSIMs. Single-country plans can be cheaper for one stay; regional plans cost more but cover several countries. On Airalo, Europe plans appear under names such as Eurolink and EUconnect. Check the coverage list on each, because regional lists differ. See eSIM Slovakia for the single-country case.

Unlimited options

Unlimited plans on both are subject to daily high-speed limits. Reports put Saily's unlimited allowance at up to 5 GB per day, and up to 3 GB per day in some countries, while Airalo throttles after 3 GB per day on some plans, with speed dropping to about 1 Mbps afterwards. These figures change, so check the live terms before you buy.

Side by side

Reviewers who tested hotspot use tend to rate Saily slightly ahead, while Airalo is described as the safer bet when you need a niche country or many local options. Treat these as opinions and verify the plan you buy.

Apps, top-ups and tethering

Both offer app-based management and usage tracking. Airalo supports top-ups on many plans; Saily also lists top-ups, but check the current options before relying on them. If you need to share data with a laptop, read the tethering line on the exact plan page, because networks differ. Install on Wi-Fi before you travel.

Plans and prices change often, so check the current size, validity and network on the provider's site before buying.

Which should you choose?

Choose Saily for a simple short trip, or if built-in protection matters to you. Choose Airalo if you want more choice or may extend your route. If you stay several weeks, compare a Slovak prepaid SIM. For wider comparisons see best eSIM for Europe, and for coverage on the ground read internet and Wi-Fi in Slovakia.

How to decide in five minutes

1. Count your trip days and the countries on your route.
2. Open both apps and filter for Slovakia, then for Europe.
3. Compare the data amount, the validity in days and the network named on each plan page.
4. Check whether the plan allows hotspot use if you need it for a laptop.
5. Pick the cheaper plan that covers your route and install it on Wi-Fi at home.

If the two plans are close in price, the tie-breaker is usually the app and whether you want built-in web protection or a wider catalogue. Neither choice locks you in, because eSIMs are bought per trip.

Who should skip both

EU and EEA residents can use their home plan under EU roaming rules, within fair-use limits, so an eSIM is often unnecessary. You also need an eSIM-compatible, unlocked phone. See eSIM for US travelers for the phone check.