# Interval Timer Plus vs Serenity Engine

The clearest difference is in-app purchases: Serenity Engine at none against Interval Timer Plus's 1. Interval Timer Plus's advantage is ratings volume (6K vs 1) and iOS requirement (14.3 vs 17.0). On price, rating, ads and device support there is nothing between them.

Both are free to download. Interval Timer Plus sells 1 one-off in-app purchase. Serenity Engine asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Interval Timer Plus against 5.0 for Serenity Engine. That said, the two scores are not equally well evidenced: Interval Timer Plus has 6K ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Interval Timer Plus | Serenity Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (6K ratings)](https://appshunter.io/ios/app/interval-timer-plus/id1554256831/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/serenity-engine/id6758733840/reviews)** |
| Number of ratings | **6K** | 1 |
| Positive reviews | 95.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 21 MB | 120 MB |
| Requires iOS | **14.3** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Su-Au Hwang](https://appshunter.io/developer/1554256833) | [ANDREW BRODIE LANDRY](https://appshunter.io/developer/1874662777) |

## What reviewers say

### Interval Timer Plus

[App page](https://appshunter.io/ios/app/interval-timer-plus/id1554256831)

This versatile timer app offers a simple yet powerful way to manage timed activities. Customize multiple intervals with individual colors and sounds, and save them as presets for quick access. It's designed for ease of use and visibility, even from a distance, and works seamlessly in the background.

**Highlights:** Customizable intervals, Named intervals with voice readout, Individual colors and sounds, Count time or repetitions, Unlimited presets, Works in background, Full screen color coding

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |

**What reviewers like**

- 🚀 Simple and effective
- 🚀 Customizable and streamlined
- 👍 Easy to configure and edit
- 👍 Convenient for workouts and circuits
- 👍 Minimal ads and no purchases required

**What reviewers complain about**

- 🐛 Occasional issues with audio playback in the background
- 💡 Desire for more color customization options

**Reported bugs**

- Audio alerts not working when app is in the background

**Requested features**

- Support for Apple Watch integration
- Ability to delete saved workouts


### Serenity Engine

[App page](https://appshunter.io/ios/app/serenity-engine/id6758733840)

Create immersive ambient soundscapes for focus, relaxation, and sleep. Features curated sound presets, binaural beats for brainwave tuning, and a gentle sleep timer. Enjoy a beautiful visualizer and a distraction-free, ad-free interface.

**Highlights:** Curated ambient soundscapes, Binaural beats for brainwave tuning, Focus, Relax, and Sleep modes, Customizable sleep timer, Real-time audio visualizer, Minimalist, ad-free interface

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer Plus free?

Interval Timer Plus is free to download, with in-app purchases available.

### Is Serenity Engine free?

Serenity Engine is free to download, with no in-app purchases.

### Which has better reviews, Interval Timer Plus or Serenity Engine?

Serenity Engine is rated higher. Interval Timer Plus averages 4.9 out of 5 from 6K ratings, while Serenity Engine averages 5.0 from 1 ratings.

### Do Interval Timer Plus or Serenity Engine have ads?

Neither Interval Timer Plus nor Serenity Engine shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*