Alti vs Chess Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Alti
This app provides your current altitude with a simple and cool interface. It allows switching between meters and feet and automatically stores your maximum altitude. It's also available for Apple Watch and as a widget.
- Current altitude display
- Switch between meters and feet
- Store maximum altitude
- Apple Watch support
- Widget support
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The coolest and the simplest Altimeter ever! You can switch from meters and feet and store the maximum reached altitude automatically. Available also for Apple Watch, without have the app on the iPhone opened! Now available also as Widget! If you like, leave me a positive review, if not, leave me a positive review!
Chess Clock
This app provides a clean, ad-free timer for various chess game formats, including blitz and rapid. It offers customizable time controls, supports Fischer and Bronstein increment modes, and tracks game statistics for both players. Easily adjust time during a game and switch between portrait and landscape orientations.
- Ad-free interface
- Fischer and Bronstein increment modes
- Customizable timers
- Adjust time during game
- Move counter and statistics
- Portrait and landscape support
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Need a fast and reliable chess clock for your speed games? Looking for a clean, distraction-free chess timer without ads? Chess Clock is a simple tool designed to time your chess matches quickly and efficiently — whenever you need it. Perfect for blitz, bullet, rapid, classical chess, or any two-player game where precise time control matters. Why Choose This Chess Clock? ● Clean and simple interface ● No ads — no distractions ● Large, easy-to-read fonts ● Fast and reliable performance ● Designed for both casual and tournament use Key Features ● Select your game duration and increment with just a few taps ● Support for both Fischer and Bronstein increment modes ● Works in portrait and landscape orientation ● Customize your own timers ● Pause the timer at any time ● Adjust remaining time in the middle of a game ● Move counter and game statistics for both players ● Completely ad-free experience — — — How does this chess clock work? Simply select your game duration and increment type, then tap to start. Each player taps their side of the screen after making a move to switch the timer. What increment modes are supported? The app supports both Fischer and Bronstein increments. Fischer adds a fixed amount of time after every move. Bronstein adds time up to the increment amount based on how quickly you moved. Can I adjust the timer during a game? Yes. You can pause the game and adjust the remaining time for either player at any point during the match. Can I create custom time controls? Yes. You can set your own player time, choose an increment type, and specify the increment duration to match any format you need. Does the app track game statistics? Yes. The app records total game time, time played per player, number of moves, and average time per move. Does the app contain ads? No. The app is completely ad-free for a distraction-free experience. Does it work in landscape mode? Yes. The app fully supports both portrait and landscape orientations. Is the app free? The app is free to download and use, with optional premium features available via in-app purchase. — — — If you enjoy the app, please leave a review on the App Store. Your feedback really helps. Questions or suggestions? We'd love to hear from you. Support Email: AppsForParents@gmail.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/site/appsforparentsprivacy/
Screenshots
Verdict
The clearest difference is rating: Chess Clock at 4.5 against Alti's 3.9. Chess Clock also leads on review sentiment (69% vs 32%) and update cadence (every 5 weeks vs every 37 months). Alti's advantage is in-app purchases (none vs 7) and ratings volume (271 vs 42). On price, ads and device support 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. Chess Clock sells 6 in-app purchases, starting at $4.99 per 7 days. Alti asks for nothing beyond the download.
Chess Clock holds the better App Store score, 4.5 against 3.9. That said, the two scores are not equally well evidenced: Alti has 271 ratings behind it against 42, so its average is the more settled of the two. Written reviews point the same way: 32% of Alti's written reviews are positive against 69% of Chess Clock's.
Alti ships an update every 37 months, Chess Clock every 5 weeks. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.
| Parameter | Alti | Chess Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (271 ratings) | 4.5 (42 ratings) — better |
| Positive reviews | 32.4% of reviews | 68.8% of reviews — better |
| Number of ratings | 271 — better | 42 |
| Update frequency | Every 37 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 24 MB | 19 MB |
| Age rating | 4+ | +4 |
| Developer | albertopasca.it | Natalia Jakubczyk-Gajewska |
Customer experience
Alti
Chess Clock
Bugs and requests
Alti
Reported bugs
19 issues- Altimeter does not read location
- App is stuck
- Not accurate
- Géolocalisation ne fonctionne pas
- Doesn't seem to work on iPad 9
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- Doesn’t work most of the time
- Can’t change unit of measure
- Altitude jumps around
- Location is not correct
- Not working at all
- Can’t find location
- Altitude varies by 90 feet
- Doesn’t record how high you go
- Works, occasionally
- Complication does not update
- Application doesn’t give more than 800 m altitude
- Reads 0 now
- Too hard to switch units
- Too hard to enter new location
Requested features
3 requests- Display GPS accuracy
- Add a way to view past altitudes
- Instructions for use
Chess Clock
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Alti
No in-app purchases
Chess Clock
- 1 Week Premium Subscription7 Days trial$4.997 Days
- Chess Clock Premium3 Days trial$5.997 Days
- Chess Clock Premium3 Days trial$7.991 Month
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- Chess Clock Premium$14.993 Months
- Chess Clock Premium2 variants$29.991 Year
- Chess Clock Premium Lifetime$29.99







