Relax eSIM vs КупиСим
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Relax eSIM
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Get Connected Instantly with eSIMs – Anytime, Anywhere! Looking for mobile data on the go? Our app makes it easy to purchase and activate eSIMs in just minutes—no physical SIM card required. Perfect for travelers, remote workers, or anyone in need of a secondary data plan, our eSIM marketplace delivers fast, secure, and budget-friendly connectivity. Top Features: • No SIM card needed—activate with a simple QR scan • Browse affordable plans customized for your travel needs • Compatible with all eSIM-ready smartphones and tablets • Access real-time customer support when you need it Why Us? • Quick setup and instant eSIM delivery • Private, secure, and dependable connections Download the app now and experience the next generation of mobile data with eSIM!
КупиСим
Get mobile data for your travels in over 200 countries. Purchase and install an eSIM plan in minutes before you leave home, with data activating automatically upon arrival. Enjoy transparent pricing and dedicated human support.
- eSIM for 200+ destinations
- Install eSIM directly from the app
- Pay with Russian bank card or SBP
- Full refund if it doesn't work
- Transparent data plans
- Data usage monitoring
- eSIM compatibility check
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A travel eSIM for 200+ destinations: buy a plan at home in a couple of minutes — mobile data works as soon as you land. WHY КУПИСИМ • Pay with a Russian bank card or SBP. • Didn't work? We refund you — to the same card, exactly the amount charged. • Real people in support, not a bot with templates. • No QR code: install the eSIM right from the app in a few taps. • Honest plans: the exact amount of data and validity — no "unlimited" with limits in the small print. HOW IT WORKS 1. Pick a country and a plan — the price in roubles is final. 2. Pay by card or SBP. 3. Install the eSIM in a few taps — ideally at home, over Wi-Fi. 4. Data turns on by itself when you first connect to a network abroad — the plan starts only then, so installing early wastes nothing. GOOD TO KNOW • See your data left in the app, on the Home Screen, Lock Screen and in Control Center — and we'll notify you when it's running low. • Before you buy, the app checks that your iPhone supports eSIM. • No account needed: we don't ask for your name, email or phone number. • The eSIM is data only, no calls or SMS. Your main number keeps working. DESTINATIONS Turkey, UAE, Egypt, Georgia, Thailand, Vietnam, China, Kazakhstan, Uzbekistan, Armenia, all of Europe and 180+ more. Regional plans cover several countries with one eSIM. Questions? support@kupisim.app
Screenshots
Verdict
The clearest difference is update cadence: КупиСим at daily against Relax eSIM's every 8 days. Relax eSIM's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.4). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Relax eSIM ships an update every 8 days, КупиСим daily. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.
| Parameter | Relax eSIM | КупиСим |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 8 days | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.4 |
| Further details — not scored | ||
| Size | 74 MB | 39 MB |
| Age rating | 17+ | 4+ |
| Developer | RELAX ESIM LTD | Shamkhal Arslankhanov |
In-app purchases
Relax eSIM
No in-app purchases
КупиСим
No in-app purchases
