One Timer vs Chain Timers
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
One Timer
Easily manage multiple timers simultaneously for everyday tasks like cooking or interval training. Quickly start timers with a single tap and customize their appearance with a wide range of colors. The app offers a premium plan for an ad-free experience and unlimited custom timers.
- Simultaneous multi-timer functionality
- One-tap timer launch
- Customizable color settings (RGB)
- Background notifications
- HIIT and Pomodoro timer support
- Stopwatch for work hours
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One Timer is a simple timer created by a developer who really wanted it. You want to time your family's instant noodles for 3 minutes and 5 minutes at the same time, but you can't do it quickly. You want to boil eggs for 8 and a half minutes while measuring pasta for 6 minutes, but you can't do it. You want to open the app and start it immediately with one tap. We've solved those everyday problems for you and me. --- This tool is useful in scenarios like below --- - As a timer for HIIT (High-Intensity Interval Training) - As a Pomodoro timer for study sessions - As a stopwatch to calculate working hours for freelance or contract work - For managing stamina in multiple social-network game apps --- Customizable Color Settings --- You can set the background and text colors using RGB values, allowing for free changes to any color. This feature enables you to boost motivation by changing to your favorite colors. --- How to use --- - Tap the desired time from the list on the left to start the timer. - You can quickly add another timer without switching screens by long-pressing the list. - For example, you can start multiple timers simultaneously by long-pressing 3 minutes and 5 minutes. - Notification when it goes into the background. --- PREMIUM Plan --- - No Ads - Unlimited Custom Timers --- Links --- https://40yd.app/one_timer_terms https://40yd.app/one_timer_policy
Chain Timers
Connect multiple countdown timers to run in sequence. Configure automatic transitions between timers or choose to pause. Share your timer sequences easily across devices.
- Chain up to 25 timers
- Automatic or manual timer transitions
- Share timer lists
- Cross-device list sharing
- Save timer histories
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Chain your timers. Take control of your time. Chain Timer is a simple and useful app that lets you connect and run multiple countdown timers in a row. Key Features: * Connect up to 25 timers in one sequence * Choose whether to pause or move to the next timer automatically after each one ends * Easily share timer lists (QR codes can also be used for simple lists) * Share lists between iPhone, iPad, and Mac * Save up to 4 timer list histories (5 including the one you're currently using) Perfect for: * Structuring self-study sessions * Setting timers to match recipe steps * Keeping meetings and workshops on track * Creating and following your personal health routines Note: This app does not support sub-second timers. It is not intended for use in competitive sports or situations requiring precise time measurement.
Screenshots
Verdict
The clearest difference is rating: One Timer at 5.0 against Chain Timers's 4.0. One Timer also leads on update cadence (every 4 days vs every 6 weeks). Chain Timers's advantage is in-app purchases (none vs 4) and device support (4 vs 1). On price, review sentiment, ratings volume and ads 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. One Timer sells 4 in-app purchases, starting at $1.99 per month. Chain Timers asks for nothing beyond the download.
One Timer holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
One Timer ships an update every 4 days, Chain Timers every 6 weeks. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.
| Parameter | One Timer | Chain Timers |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 4 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 42 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | DAIKI YUASA | Masayuki Nomura |
Customer experience
One Timer
Chain Timers
In-app purchases
One Timer
- PREMIUM$1.991 Month
- Buy me a coffee$1.99
- Buy me a burger$3.99
- PREMIUM$9.99
Chain Timers
No in-app purchases









