# RestSim vs eSIM Travel Data

The clearest difference is update cadence: eSIM Travel Data at every 4 days against RestSim's fortnightly. RestSim's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RestSim ships an update fortnightly, eSIM Travel Data every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | RestSim | eSIM Travel Data |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 114 MB | 59 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ismail Abdi](https://appshunter.io/developer/6777342455) | [UBESIM](https://appshunter.io/developer/1896641663) |

## What reviewers say

### RestSim

[App page](https://appshunter.io/ios/app/restsim-esim-data-call-sms/id6786134566)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### eSIM Travel Data

[App page](https://appshunter.io/ios/app/esim-travel-data-ubesim/id6787798116)

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is RestSim free?

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

### Is eSIM Travel Data free?

eSIM Travel Data is free to download, with no in-app purchases.

### Do RestSim or eSIM Travel Data have ads?

Neither RestSim nor eSIM Travel Data shows ads.

### Which is updated more often, RestSim or eSIM Travel Data?

RestSim ships an update fortnightly, and eSIM Travel Data every 4 days. Most recently, RestSim was updated on October 31, 2026 and eSIM Travel Data on October 31, 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.*