# Period vs Interval Timer for Apple Watch

The clearest difference is update cadence: Interval Timer for Apple Watch at every 8 days against Period's every 4 months. Period's advantage is iOS requirement (15.0 vs 17.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Period sells 4 in-app purchases, starting at $3.99 per 7 days and Interval Timer for Apple Watch sells 5 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Period against 5.0 for Interval Timer for Apple Watch. Both are backed by a comparable volume of ratings — 3 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Period ships an update every 4 months, Interval Timer for Apple Watch every 8 days. The most recent releases landed on June 4, 2026 and July 24, 2026 respectively.

## The numbers

| Metric | Period | Interval Timer for Apple Watch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/period-cycle-tracker/id6446484758/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/interval-timer-for-apple-watch/id6737627055/reviews) |
| Number of ratings | 3 | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 8 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 17 MB | 55 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [nuriddin hakimov](https://appshunter.io/developer/1530502352) | [Vladyslav Lietun](https://appshunter.io/developer/1528499723) |

## What reviewers say

### Period

[App page](https://appshunter.io/ios/app/period-cycle-tracker/id6446484758)

This app helps women track their menstrual cycles, predict ovulation, and monitor pregnancy stages. It offers features for logging symptoms, tracking weight, and performing pelvic floor exercises. It also provides helpful tips and a baby growth tracker.

**Highlights:** Menstrual cycle tracking, Ovulation prediction, Pregnancy stage monitoring, Weight tracking, Kegel exercise guidance, Baby growth tracking, Period and symptom logging

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Initial offer | $3.99 | per 7 days |
| Basic offer | $12.99 | per month |
| Super offer | $14.99 | per 3 months |
| Super offer | $49.99 | per year |


### Interval Timer for Apple Watch

[App page](https://appshunter.io/ios/app/interval-timer-for-apple-watch/id6737627055)

This minimalist timer app helps you manage exercise and rest periods for effective workouts. Customize intervals, stay on track with timely notifications, and focus on your fitness goals with its clean interface.

**Highlights:** Quick timer setup, Customizable intervals, Rest period notifications, Minimalist user interface, Native iOS development

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Timestro Pro - Monthly | $1.99 | per month |
| Timestro Pro - Yearly | $11.99 | per year |
| Timestro Pro - Yearly | $17.99 | per year |
| Timestro Pro | $11.99 | one-time |
| Timestro Pro | $17.99 | one-time |


## Frequently asked questions

### Is Period free?

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

### Is Interval Timer for Apple Watch free?

Interval Timer for Apple Watch is free to download, with in-app purchases available.

### Which has better reviews, Period or Interval Timer for Apple Watch?

Period and Interval Timer for Apple Watch are both rated 5.0 out of 5 on the App Store, from 3 and 5 ratings respectively.

### Do Period or Interval Timer for Apple Watch have ads?

Neither Period nor Interval Timer for Apple Watch shows ads.

### Which is updated more often, Period or Interval Timer for Apple Watch?

Period ships an update every 4 months, and Interval Timer for Apple Watch every 8 days. Most recently, Period was updated on June 4, 2026 and Interval Timer for Apple Watch on July 24, 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.*