# HeadsUp vs GMWater

The clearest difference is in-app purchases: GMWater at none against HeadsUp's 3. GMWater also leads on update cadence (every 2 days vs every 3 weeks). HeadsUp's advantage is device support (5 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. HeadsUp sells 3 in-app purchases, starting at $0.99 per month. GMWater asks for nothing beyond the download.

HeadsUp ships an update every 3 weeks, GMWater every 2 days. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | HeadsUp | GMWater |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/headsup-improve-posture/id1629577265/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 68.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 169 MB | 5 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [家浩 汪](https://appshunter.io/developer/1071202242) | [春华 黄](https://appshunter.io/developer/994771333) |

## What reviewers say

### HeadsUp

[App page](https://appshunter.io/ios/app/headsup-improve-posture/id1629577265)

This app uses your device's camera or AirPods to monitor your sitting posture. It provides gentle reminders and gamified feedback to help you maintain an upright position, with additional features like a focus timer and statistics tracking.

**Highlights:** Camera or AirPods posture detection, Gamified posture feedback, Customizable sensitivity, Multiple reminder modes, Sitting break reminders, Pomodoro timer, Focus and posture statistics, Widget support

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $2.99 | per year |
| Pro | $3.99 | one-time |


### GMWater

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HeadsUp free?

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

### Is GMWater free?

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

### Do HeadsUp or GMWater have ads?

Neither HeadsUp nor GMWater shows ads.

### Which is updated more often, HeadsUp or GMWater?

HeadsUp ships an update every 3 weeks, and GMWater every 2 days. Most recently, HeadsUp was updated on November 7, 2026 and GMWater on November 4, 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.*