Shell Shockers vs Mars 2501
Price, ratings, monetisation and update history for both games, side by side โ with what reviewers say about each.
Shell Shockers
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*No ads, no IAPs, no micro transactions, no crippled gameplay, no data requirements. *Figure out the moving shell to score *Created by a developer with a heart - Game runs on all iOS devices running iOS 9.0 or higher for wide compatibility * No In App Purchases, No IAPs, No Micro Transactions * No Paywall Crippled Gameplay * Game runs on all iPhones, iPod Touches and iPads running iOS 9.0 or higher for wide compatibility * Small file size No crippled gameplay, No data requirements. No micro transactions. No IAP. Just game. https://www.tiktok.com/@reddstudiosapps https://www.youtube.com/@reddstudiosapps Show us some love and thank you for playing. Enjoy!
Mars 2501
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Mars 2501 is a strategy game. It is a simple and fast game. During the game you build robots that destroy your opponents. The opponents are red and your color is blue. The one who destroys the opponent's Factory and Head building wins the game. As I said, the game is fast, you have to act all the time to defeat the opponent. There are three types of robots and each of them has a different firepower. Robot 3 is the strongest. Of course, there is also a bonus character, the Immortal. Killing him is not as easy as destroying the robots. And you can also build workers who repair buildings. Go to the building with the worker, if the building is damaged, it will be repaired. Movement is done by pressing the character with your finger, then he will stop, if you move in a certain direction, then he will move in that direction. Shooting is done automatically when the opponent is at a certain distance.
Screenshots
Verdict
The clearest difference is price: Mars 2501 at Free against Shell Shockers's $0.29. Mars 2501 also leads on update cadence (every 3 months vs every 33 months). Shell Shockers's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 15.0). On ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Mars 2501 is free to download; Shell Shockers costs $0.29 up front. Mars 2501 sells 1 one-off in-app purchase. Shell Shockers asks for nothing beyond the download.
Shell Shockers ships an update every 33 months, Mars 2501 every 3 months. The most recent releases landed on September 20, 2026 and July 25, 2026 respectively.
| Parameter | Shell Shockers | Mars 2501 |
|---|---|---|
| Price | $0.29 | Free โ better |
| Update frequency | Every 33 months | Every 3 months โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 25 MB | 111 MB |
| Age rating | 4+ | 12+ |
| Developer | Ranz Ursal | Janek Soomets |
In-app purchases
Shell Shockers
No in-app purchases
Mars 2501
- Upgrade Mars 2501$4.99





