# Interval Timer vs GMWater

The clearest difference is in-app purchases: GMWater at none against Interval Timer's 2. GMWater also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Interval Timer sells 2 in-app purchases, starting at $1.99 per month. GMWater asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Interval Timer | GMWater |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (77 ratings)](https://appshunter.io/ios/app/interval-timer-tabata-workout/id1522536309/reviews)** | — |
| Number of ratings | **77** | — |
| Positive reviews | 93.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 5 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mizo LLC](https://appshunter.io/developer/1820590289) | [春华 黄](https://appshunter.io/developer/994771333) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-tabata-workout/id1522536309)

This app provides a customizable round-based timer for various time-based activities, including HIIT, circuit training, and boxing. It features a minimalistic design with big digits and bright colors, offering hand-crafted sounds to maintain focus. Users can create complex workouts, save custom sets, and track their workout history with Apple Health integration.

**Highlights:** Customizable round-based timer, Minimalistic design with big digits, Hand-crafted sounds for focus, Unlimited saved intervals, Quick Set feature, Apple Health integration, Dark Mode support

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intervals+ Monthly | $1.99 | per month |
| Intervals+ Lifetime | $9.99 | one-time |


### GMWater

[App page](https://appshunter.io/ios/app/gmwater/id6475661995)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer free?

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

### Is GMWater free?

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

### Do Interval Timer or GMWater have ads?

Neither Interval Timer nor GMWater shows ads.

### Which is updated more often, Interval Timer or GMWater?

Interval Timer ships an update every 2 days, and GMWater every 2 days. Most recently, Interval Timer was updated on October 27, 2026 and GMWater on October 25, 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.*