Simple Sinus Zazen Timer vs Serene Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Sinus Zazen Timer
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This timer gives you the ability to set up your zazen-time and a preparation-time before. The signals are generated by a simple sinus-wave. So, you get a real digital tone as a signal not a sample of a singing bowl or something else. Take this signal to act, to meditate or to open and close your sitting by tapping your own singing-bowl. The signals and times may be varied to your needs. The App may run in background or locked device, so the energy consumption is very low.
Serene Timer
This app provides a gentle and calm way to wake up or end meditation sessions. It uses sounds that gradually increase in volume, easing you into alertness without startling you. Ideal for naps and relaxation, it promotes a refreshed and centered feeling.
- Gradually increasing sound volume
- Gentle wake-up experience
- Supports meditation and naps
- Calm and tranquil soundscapes
- No harsh tones or jolts
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Tired of timers that shock you awake? Serene Timer offers a kinder, calmer way to wake up, perfect for meditation, naps, and relaxation. With sounds that gradually ramp up in volume, Serene Timer gently eases you back into alertness, leaving you refreshed and centered instead of startled. Whether you need a soft wake-up after a power nap or a gentle end to your meditation, Serene Timer is designed to support your wellness. No harsh tones, no jolts—just a smooth, tranquil rise that fits seamlessly into your routine. Discover the peaceful alternative to abrupt alarms.
Screenshots
Verdict
The clearest difference is price: Serene Timer at Free against Simple Sinus Zazen Timer's $0.99. On update cadence, 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
Serene Timer is free to download; Simple Sinus Zazen Timer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Simple Sinus Zazen Timer ships an update every 11 months, Serene Timer every 7 months. Both last shipped on October 6, 2026.
| Parameter | Simple Sinus Zazen Timer | Serene Timer |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 11 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 — better | 17.5 |
| Further details — not scored | ||
| Size | 1 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Dirk Scheidt | Sebastian Ruhleder |
In-app purchases
Simple Sinus Zazen Timer
No in-app purchases
Serene Timer
No in-app purchases
Questions
Is Simple Sinus Zazen Timer free?
Is Serene Timer free?
Do Simple Sinus Zazen Timer or Serene Timer have ads?
Which is updated more often, Simple Sinus Zazen Timer or Serene Timer?
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