# Best Interval Timer vs Health Dynamics

The clearest difference is in-app purchases: Best Interval Timer at none against Health Dynamics's 1. Health Dynamics's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Health Dynamics sells 1 one-off in-app purchase. Best Interval Timer asks for nothing beyond the download.

Best Interval Timer ships an update every 12 months, Health Dynamics every 21 months. The most recent releases landed on October 11, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Best Interval Timer | Health Dynamics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (81 ratings)](https://appshunter.io/ios/app/best-interval-timer/id547542742/reviews)** | — |
| Number of ratings | **81** | — |
| Positive reviews | 89.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 12 months** | Every 21 months |
| Monetization | Ad-supported | — |
| Size | 19 MB | 61 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [倩 赵](https://appshunter.io/developer/376557917) | [Health Dynamics 360 Pty ltd](https://appshunter.io/developer/1730882395) |

## What reviewers say

### Best Interval Timer

[App page](https://appshunter.io/ios/app/best-interval-timer/id547542742)

This app acts as your personal coach, guiding you through workouts with customizable routines. Focus on your exercise while it manages timing for warm-up, high/low intensity intervals, cool-downs, and rest periods.

**Highlights:** Customizable workout routines, Warm-up, intensity, cool-down, rest periods, Background and multitasking support, Adjustable interval sounds and vibrations, Workout practice tracking, Landscape and portrait orientation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Simple and functional
- 👍 Free
- 👍 Customizable intervals
- 👍 Works in background

**What reviewers complain about**

- 🐛 Too many ads
- 🐛 Limited programmable routines (free version)
- 🐛 Ads block screen in landscape
- 🐛 Small numbers hard to read
- 🐛 Side view unusable

**Reported bugs**

- App stops working after rating notification
- Buttons don't work after rating notification
- Crashes when saving timers
- Crashes when editing exercises
- Freezes and stops working

**Requested features**

- Ability to save multiple intervals/routines
- Voice cues for start/stop
- Apple Watch compatibility
- Larger buttons and text
- Option to save different schedules (e.g., Tabata)


### Health Dynamics

[App page](https://appshunter.io/ios/app/health-dynamics/id6477858771)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Menopause Masterclass | $9.99 | one-time |


## Frequently asked questions

### Is Best Interval Timer free?

Best Interval Timer is free to download, with no in-app purchases.

### Is Health Dynamics free?

Health Dynamics is free to download, with in-app purchases available.

### Do Best Interval Timer or Health Dynamics have ads?

Best Interval Timer shows ads; Health Dynamics does not.

### Which is updated more often, Best Interval Timer or Health Dynamics?

Best Interval Timer ships an update every 12 months, and Health Dynamics every 21 months. Most recently, Best Interval Timer was updated on October 11, 2026 and Health Dynamics on September 22, 2026.

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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.*