# Phyzseek vs Simple Interval Timer

The clearest difference is update cadence: Simple Interval Timer at weekly against Phyzseek's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Phyzseek sells 3 in-app purchases, starting at $12.99 per month and Simple Interval Timer sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Phyzseek ships an update every 5 weeks, Simple Interval Timer weekly. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Phyzseek | Simple Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (87 ratings)](https://appshunter.io/ios/app/phyzseek-daily-hiit-workout/id1076780161/reviews)** | — |
| Number of ratings | **87** | — |
| Positive reviews | 84.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Subscription | — |
| Size | 11 MB | 23 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [WellFit Holdings LLC](https://appshunter.io/developer/1076780160) | [阳 童](https://appshunter.io/developer/1782546459) |

## What reviewers say

### Phyzseek

[App page](https://appshunter.io/ios/app/phyzseek-daily-hiit-workout/id1076780161)

Engage in doctor-developed, high-intensity interval training designed to burn fat, build muscle, and improve fitness. Track progress, compete with friends, and stay motivated with personalized workouts and real-time feedback.

**Highlights:** Doctor-developed HIIT workouts, Calorie and fat burning, Muscle development, Personalized exercise modifications, Integrated timers and pacer, Heart rate monitoring, Workout result tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Phyzseek subscription | $12.99 | per month |
| Phyzseek subscription | $99.99 | per year |
| Workout Stats until midnight | $0.99 | one-time |

**What reviewers like**

- 👍 Great workouts
- 💪 Effective for fitness
- 🚀 Efficient workouts
- 📈 Tracks progress well
- 💡 Varied exercises

**What reviewers complain about**

- 💸 Charged for free trial
- 💳 Subscription deducted early
- ❌ App not working
- 🚫 Login issues
- 👴 Not for older users

**Reported bugs**

- App not working
- Cannot log in
- Login failed
- Forgot password not working
- Facebook login not accepted

**Requested features**

- Consider older users' fitness needs
- Clarify free trial terms
- Improve login functionality


### Simple Interval Timer

[App page](https://appshunter.io/ios/app/simple-interval-timer-flexy/id6742375743)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Yearly Premium | $4.99 | per year |


## Frequently asked questions

### Is Phyzseek free?

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

### Is Simple Interval Timer free?

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

### Do Phyzseek or Simple Interval Timer have ads?

Neither Phyzseek nor Simple Interval Timer shows ads.

### Which is updated more often, Phyzseek or Simple Interval Timer?

Phyzseek ships an update every 5 weeks, and Simple Interval Timer weekly. Most recently, Phyzseek was updated on October 24, 2026 and Simple Interval Timer on October 9, 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.*