# Mars Signal vs eSIM Genius

Mars Signal and eSIM Genius 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.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Mars Signal | eSIM Genius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (9 ratings)](https://appshunter.io/ios/app/esim-genius/id6782817433/reviews)** |
| Number of ratings | — | **9** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | — | Free |
| Size | 23 MB | 85 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ONE TREE HILL TECH LIMITED](https://appshunter.io/developer/1818085565) | [Jonathan Dion](https://appshunter.io/developer/6782817435) |

## 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


### eSIM Genius

[App page](https://appshunter.io/ios/app/esim-genius/id6782817433)

Easily purchase and activate prepaid data eSIMs for over 200 destinations worldwide. Avoid roaming charges and stay connected upon arrival with a simple QR code scan. Track data usage and get personalized plan recommendations.

**Highlights:** Prepaid data eSIMs for 200+ destinations, QR code activation, Per-day pricing, Secure card payments, Data usage tracking, In-app advisor for plan selection

**Features:** macOS Compatibility, Apple Wallet, 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 eSIM Genius free?

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

### Do Mars Signal or eSIM Genius have ads?

Neither Mars Signal nor eSIM Genius shows ads.

### Which is updated more often, Mars Signal or eSIM Genius?

Mars Signal ships an update weekly, and eSIM Genius weekly. Most recently, Mars Signal was updated on October 31, 2026 and eSIM Genius 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.*