ZenShell vs RetroAchievementsUI
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
ZenShell
Test your reflexes and hand-eye coordination with this classic "ball and cups" style game. Catch hermit crabs as they move rapidly under shells. See if your eyes are fast enough to keep up!
- Hand-eye coordination test
- Classic "ball and cups" gameplay
- Fast-paced shell following
- Hermit crab catching
- Reaction time challenge
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How fast are your eyes? Are they fast enough to catch hermit crabs and still follow the rapidly moving shells? Test your hand-eye coordination in the form of the classic "ball and cups" game!
RetroAchievementsUI
Browse and discover games with achievements. Track your progress and find new challenges to master. This open-source application is built with SwiftUI.
- Browse games with achievements
- Discover new games
- Track game progress
- Open-source
- SwiftUI built
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RetroAchievementsUI is open-source and written entirely in SwiftUI. View games you've played, or find new ones to master! All app features are free and not locked behind a paywall, ads or data collection. In-App purchases are optional to help support future development efforts! Note: This app is not official or endorsed by RetroAchievements.
Screenshots
Verdict
The clearest difference is review sentiment: ZenShell at 100% against RetroAchievementsUI's 56%. ZenShell also leads on rating (4.8 vs 4.0) and in-app purchases (none vs 3). RetroAchievementsUI's advantage is update cadence (fortnightly vs every 2 months). On price, ratings volume, ads and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. RetroAchievementsUI sells 3 one-off in-app purchases. ZenShell asks for nothing beyond the download.
ZenShell holds the better App Store score, 4.8 against 4.0. Both are backed by a comparable volume of ratings — 5 and 9 respectively. Written reviews point the same way: 100% of ZenShell's written reviews are positive against 56% of RetroAchievementsUI's.
ZenShell ships an update every 2 months, RetroAchievementsUI fortnightly. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.
| Parameter | ZenShell | RetroAchievementsUI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | 4.0 (9 ratings) |
| Positive reviews | 100.0% of reviews — better | 55.6% of reviews |
| Number of ratings | 5 | 9 — better |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 179 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Z Sculpt | Michael Rosenberg |
Customer experience
ZenShell
RetroAchievementsUI
In-app purchases
ZenShell
No in-app purchases
RetroAchievementsUI
- Tip - Insert Coin$0.99
- Tip - Continue$4.99
- Tip - High Score$9.99
Questions
Is ZenShell free?
Is RetroAchievementsUI free?
Which has better reviews, ZenShell or RetroAchievementsUI?
Do ZenShell or RetroAchievementsUI have ads?
Which is updated more often, ZenShell or RetroAchievementsUI?
Other comparisons
