Chess Clock by Chess.com vs SumDropPop
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Chess Clock by Chess.com
This free app functions as a digital chess clock, offering customizable time controls for any game. It supports various increment and delay types, multiple stages, and handicapping, making it ideal for casual play and tournaments. Adjust time on the fly and enjoy clear displays and audio alerts.
- Customizable time controls
- Fischer and Bronstein increments
- Multiple-stage time controls
- Handicapping support
- On-the-fly time adjustments
- Pause and interruption support
- Audio alerts
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Replace your chess clock with this free game timer! It's easy to use, yet fully featured to handle any time control. 100% free: no in-app purchases, no ads! Choose your time control and you're ready to play. The 2nd player presses her button to start the 1st player's clock - and the game is on! FEATURES - Large, easy-to-read buttons - Works in landscape and portrait on all devices - Quickly customize the app for one-tap access to all your favorite time controls - Time controls include base minutes per player and optional per-move delays or bonus time. The app supports both Fischer and Bronstein increments, as well as simple delays. The duration is up to you! - Supports multiple-stage time controls commonly seen in tournaments, such as "40 moves in 2 hours + game in 60 minutes." A glance at the clock shows your current stage! - Support for handicapping lets you set different time controls for each player! - You can adjust the time remaining on the fly, in the middle of your game, for either or both players! - Clock pauses automatically if the app is interrupted; manually pause the clock at any time - Pleasant sounds for buttons and "time's up" alert At Chess.com, we really do love chess, and *sometimes* we even play it offline! For times like that, we created this clock - and we hope you love it as much as we do.
SumDropPop
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SumDropPop — Make 10, Clear the Board! A fresh twist on the falling-block puzzles you love. Numbered blocks drop from the top, and your goal is simple but addictive: line up neighboring blocks that add up to 10 and watch them POP in a burst of color! Easy to learn, impossible to put down. Whether you have two minutes in line or a long evening to unwind, SumDropPop fits perfectly into your day. HOW TO PLAY • Numbered blocks fall onto the board, one piece at a time. • Slide and rotate each piece into the perfect spot. • When neighboring blocks sum to exactly 10 — horizontally or vertically — they clear instantly. • Clear blocks to make room, keep the board low, and survive as long as you can. CHAIN COMBOS FOR HUGE SCORES The real magic happens when one clear triggers another. Set up clever stacks, drop a single block, and watch a chain reaction sweep across the board. Bigger combos mean bigger scores — and serious bragging rights. FEATURES • Simple one-finger controls — swipe to move, tap to rotate, drop to slam it home. • Satisfying pop animations and particle effects on every clear. • Combo banners that celebrate your biggest chains. • Lives system — run out and keep the game going with a second chance. • Persistent high score — every run is a challenge to beat your personal best. • Clean, colorful design that's easy on the eyes. • Smooth, responsive gameplay built natively for iPhone and iPad. WHY YOU'LL LOVE IT SumDropPop blends quick thinking with relaxing, satisfying play. There's no pressure to learn complicated rules — just drop, sum, and pop. But beneath the simple surface is a deep scoring game that rewards planning, patience, and a little bit of bold risk-taking. How high can you score? Can you build the perfect combo chain? Download SumDropPop now and find out! Make 10. Clear the board. Beat your best.
Screenshots
Verdict
The clearest difference is ads: Chess Clock by Chess.com at none against SumDropPop's shown. Chess Clock by Chess.com also leads on chart position (#92 vs unranked) and iOS requirement (14.0 vs 16.0). SumDropPop's advantage is update cadence (every 2 days vs every 3 months). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Chess Clock by Chess.com ships an update every 3 months, SumDropPop every 2 days. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.
| Parameter | Chess Clock by Chess.com | SumDropPop |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (342 ratings) — better | — |
| Positive reviews | 90.6% of reviews | — |
| Number of ratings | 342 — better | — |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Best chart rank | #92 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 3 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Chess.com | Bluteem LLC |
Bugs and requests
Chess Clock by Chess.com
Reported bugs
2 issues- Time not always reduced when pressing the clock quickly
- Custom time settings not always saved properly
Requested features
4 requests- Add warning/countdown alerts for time running out
- Allow setting different times for each player
- Provide more theme/color options
- Add vibration feedback when pressing the clock
SumDropPop
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Chess Clock by Chess.com
No in-app purchases
SumDropPop
No in-app purchases








