# Stats Solver by ChatStick vs MarsMissionPro

The clearest difference is in-app purchases: MarsMissionPro at none against Stats Solver by ChatStick's 1. MarsMissionPro also leads on device support and iOS requirement (16.6 vs 26.0). On price there is nothing between them.

Both are free to download. Stats Solver by ChatStick sells 1 one-off in-app purchase. MarsMissionPro asks for nothing beyond the download.

## The numbers

| Metric | Stats Solver by ChatStick | MarsMissionPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/marsmissionpro/id6761924727/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Free |
| Size | 12 MB | 3 MB |
| Requires iOS | 26.0 | **16.6** |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) | [Shashwat Patel](https://appshunter.io/developer/1873309489) |

## What reviewers say

### Stats Solver by ChatStick

[App page](https://appshunter.io/ios/app/stats-solver-by-chatstick/id6760958107)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | $2.99 | one-time |


### MarsMissionPro

[App page](https://appshunter.io/ios/app/marsmissionpro/id6761924727)

Explore the intricacies of Mars missions with this educational app. It features orbital visualization, rocket calculations, crew planning, and interactive learning tools to understand interplanetary travel and resource management.

**Highlights:** 2D Solar System Orbit View, Rocket Delta V Calculator, Launch Window Calculator, Crew Mission Planner, Life Support Mass Estimator, Interactive Learning Modules

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

**In-app purchases:** none


## Frequently asked questions

### Is Stats Solver by ChatStick free?

Stats Solver by ChatStick is free to download, with in-app purchases available.

### Is MarsMissionPro free?

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

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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.*