One Sim vs ReiseSIM Topup
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
One Sim
Install your eSIM once and enjoy seamless global connectivity. Purchase data packages for entire regions, eliminating the need for reinstallation or QR codes. Stay online for maps, messaging, and memories with fast 4G/5G data across multiple countries.
- Install eSIM once
- Regional data packages
- Seamless cross-country coverage
- Fast 4G/5G data
- No QR codes or reinstallation
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With onesim, you install your eSIM once and never again. Every time you buy a new data package, it’s instantly ready to use - no reinstallation, no QR codes, no roaming headaches. Whether you’re exploring Europe, heading across the Americas, or venturing into Asia, onesim keeps you connected with reliable data in every country you visit. Stay online for maps, messaging, and memories - all with a single data plan. Why travelers love onesim: • One eSIM - install once and you’re set • One data package per region - Traveling to Europe? Purchase one data package and you’re covered wherever you go! • Seamless coverage - stay online as you cross countries • Fast 4G/5G data - perfect for maps, chat, and travel apps
ReiseSIM Topup
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Wiederaufladen und Datennutzung von SIM-Karten und eSIM von ReiseSIM.de nun direkt aus der App
Screenshots
Verdict
The clearest difference is update cadence: One Sim at weekly against ReiseSIM Topup's every 3 weeks. ReiseSIM Topup's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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.
One Sim ships an update weekly, ReiseSIM Topup every 3 weeks. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.
| Parameter | One Sim | ReiseSIM Topup |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (10 ratings) — better | — |
| Positive reviews | 80.6% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Weekly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.6 — better |
| Further details — not scored | ||
| Size | 52 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Horizon Digital Ventures L.L.C. | Daniel Fritz |
In-app purchases
One Sim
No in-app purchases
ReiseSIM Topup
No in-app purchases
