# One Sim vs KlimTrav

The clearest difference is update cadence: KlimTrav at daily against One Sim's weekly. KlimTrav also leads on 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, KlimTrav daily. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | One Sim | KlimTrav |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (10 ratings)](https://appshunter.io/ios/app/one-sim/id6748266546/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 76.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | Free | — |
| Size | 73 MB | 44 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Horizon Digital Ventures L.L.C.](https://appshunter.io/developer/1824892852) | [Mendim Klimenta](https://appshunter.io/developer/1887115522) |

## 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


### KlimTrav

[App page](https://appshunter.io/ios/app/klimtrav/id6760979139)

**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 KlimTrav free?

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

### Do One Sim or KlimTrav have ads?

Neither One Sim nor KlimTrav shows ads.

### Which is updated more often, One Sim or KlimTrav?

One Sim ships an update weekly, and KlimTrav daily. Most recently, One Sim was updated on October 18, 2026 and KlimTrav on October 11, 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.*