Timer vs Acid Interval
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timer
This app offers a simple and intuitive way to manage your time for various activities. Set custom timers, utilize quick presets, and adjust alarm volumes to suit your needs. Stay on track with home screen widgets and an optional ambient ticking sound.
- Easy timer setting
- Customizable presets
- Adjustable alarm volume
- Ambient ticking sound option
- Home screen widgets
- Flexible subscription options
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Meet Minimal Timer, your perfect companion for all your timing needs. This easy-to-use timer app helps you stay focused and manage your time well, whether you're working, studying, cooking, or just need a gentle reminder. We've designed it to be simple and helpful, so you can do more with less fuss. Set Timers with Ease: With Minimal Timer, setting a timer is straightforward and quick. You can easily set your desired duration in minutes or hours using the clear, easy-to-use keypad interface. Simply type in the time you need, and you're ready to go. If you often use the same times, you'll also love our selection of handy presets that get you started quickly. Or, if you need something specific, you can customize your own timers to fit any activity. Minimal Timer is built to be flexible for your everyday life. Custom Presets: Create and save your own frequently used timer durations. Whether it's for a 25-minute focus session, a 7-minute workout, or a 30-minute cooking reminder, you can set it once and use it again and again with just a tap. This makes starting your favorite timers super quick and easy. Custom Alarm Volume: Adjust your alarm sound to be just right for any situation. Whether you need a loud reminder to get your attention or a quiet chime that won't disturb others, you're in control. This means your timer will always alert you exactly how you want it to. Ambient Ticking Sound: If you like to feel time passing, you can turn on an optional, gentle ticking sound. This subtle feature can help you stay aware of the duration and maintain your focus, creating a calm and productive environment without being distracting. Widgets: Keep an eye on your timers right from your home screen. Our handy widgets let you see your active timers at a glance, so you're always updated on your progress without needing to open the app. It's a convenient way to stay on track throughout your day. Subscription & Cancellation: Enjoy flexible subscription options for premium features. Your payment is charged to your Apple account when you confirm your purchase, and subscriptions renew automatically unless you cancel at least 24 hours before the current period ends. If you start with a free trial, it will switch to a paid subscription unless canceled before the trial is over. You can easily manage or cancel your subscription anytime through your Apple account settings. Ready to make managing your time a breeze? Minimal Timer is designed for everyone, with a clean look and straightforward features that just work. Give it a try today and enjoy the convenience of a reliable and simple timer tool! Terms of Use & Privacy Policy: https://regular-wednesday-69a.notion.site/Terms-of-Use-2b99efd494008031afe9f5cc09712f48 https://regular-wednesday-69a.notion.site/Privacy-Policy-2b79efd4940080e1b734f1af1d853ddb
Acid Interval
This focus timer offers a visually unique approach to deep work, moving away from traditional interfaces. It provides customizable timers and engaging visual feedback to help users stay on task, even with the screen off. The app prioritizes a distraction-free experience with no account or data syncing required.
- Unique visual interface
- Customizable timer intervals
- Engaging animation mechanisms
- Screen-off notifications
- No account or data sync
- Phone lock compatibility
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A focus timer worth looking at. Most focus timers look like a spreadsheet with a countdown in it. This one is built the other way round. A single enormous numeral, bleeding off the edge of a field of acid green. Behind it, a mechanism that moves once per second, locked to the clock and never drifting. Rings that bounce, breathe, ripple inward, or pass momentum down a Newton's cradle. When you start a session the whole field inverts to black and the numbers light up like something switched on behind them. Tap anywhere to start. Swipe to change the mechanism. Double-tap to change the colour. You never have to open a menu. 25/5, 50/10, 90/20, or count up. The classic pomodoro, longer ultradian blocks, or open-ended flow when you don't want a deadline. Timed properly. Built on timestamps, not ticks. Lock your phone, switch apps, come back: it is exactly where it should be. It tells you when you are done, even with the screen off. No account. No sync. No data leaves your phone. ACID INTERVAL PRO One payment unlocks all eight mechanisms, all seven colourways, and custom interval lengths. The timer itself is free and always will be.
Screenshots
Verdict
The clearest difference is rating: Acid Interval at 5.0 against Timer's 4.4. Acid Interval also leads on monetization model (freemium vs subscription). Timer's advantage is ratings volume (442 vs 1). On price, ads, 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. Timer sells 3 in-app purchases, starting at $7.99 per 7 days and Acid Interval sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Acid Interval holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Timer has 442 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Timer | Acid Interval |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (442 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | 442 — better | 1 |
| Update frequency | Every 4 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Freemium — better |
| Devices | iPhone | iPhone |
| Requires iOS | 17 | 17.0 |
| Further details — not scored | ||
| Size | 28 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Studio 1J, LLC | Preston Carr |
Customer experience
Timer
Acid Interval
Bugs and requests
Timer
Reported bugs
3 issues- App swirls for over a minute before loading
- No widgets found after paying for subscription
- Unable to get past the first screen without subscribing
Requested features
4 requests- Allow limited access to try before subscribing
- Add an option to control the timer from the widget
- Add shortcuts support for setting and naming timers
- Add a 24-hour timer option
Acid Interval
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Timer
- Minimal Timer+3 Days trial$7.997 Days
- Minimal Timer+3 Days trial$19.997 Days
- Minimal Timer+3 variants$79.001 Year
Acid Interval
- Acid Interval Pro$2.99








