# One Sim vs ReiseSIM Topup

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.

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.

## The numbers

| Metric | One Sim | ReiseSIM Topup |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (10 ratings)](https://appshunter.io/ios/app/one-sim/id6748266546/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 80.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 52 MB | 17 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Horizon Digital Ventures L.L.C.](https://appshunter.io/developer/1824892852) | [Daniel Fritz](https://appshunter.io/developer/647200486) |

## What reviewers say

### One Sim

[App page](https://appshunter.io/ios/app/one-sim/id6748266546)

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.

**Highlights:** Install eSIM once, Regional data packages, Seamless cross-country coverage, Fast 4G/5G data, No QR codes or reinstallation

**Features:** Apple Wallet

**In-app purchases:** none


### ReiseSIM Topup

[App page](https://appshunter.io/ios/app/reisesim-topup/id6757850235)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One Sim free?

One Sim is free to download, with no in-app purchases.

### Is ReiseSIM Topup free?

ReiseSIM Topup is free to download, with no in-app purchases.

### Do One Sim or ReiseSIM Topup have ads?

Neither One Sim nor ReiseSIM Topup shows ads.

### Which is updated more often, One Sim or ReiseSIM Topup?

One Sim ships an update weekly, and ReiseSIM Topup every 3 weeks. Most recently, One Sim was updated on November 6, 2026 and ReiseSIM Topup on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*