# Mars Signal vs eSIM10

Mars Signal and eSIM10 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Mars Signal ships an update weekly, eSIM10 every 5 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Mars Signal | eSIM10 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Size | 23 MB | 30 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [ONE TREE HILL TECH LIMITED](https://appshunter.io/developer/1818085565) | [abdulkadir sahin](https://appshunter.io/developer/6797268981) |

## What reviewers say

### Mars Signal

[App page](https://appshunter.io/ios/app/mars-signal/id6770787268)

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

**In-app purchases:** none


### eSIM10

[App page](https://appshunter.io/ios/app/esim10/id6815137141)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mars Signal free?

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

### Is eSIM10 free?

eSIM10 is free to download, with no in-app purchases.

### Do Mars Signal or eSIM10 have ads?

Neither Mars Signal nor eSIM10 shows ads.

### Which is updated more often, Mars Signal or eSIM10?

Mars Signal ships an update weekly, and eSIM10 every 5 days. Most recently, Mars Signal was updated on October 31, 2026 and eSIM10 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.*