# BMI Tracker vs Water Tracker

The clearest difference is update cadence: Water Tracker at every 5 days against BMI Tracker's every 4 months. Water Tracker also leads on iOS requirement (13.0 vs 18.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. BMI Tracker sells 1 one-off in-app purchase and Water Tracker sells 2 in-app purchases, starting at $17.99 per month. Whichever you choose, the download price is not the number that matters.

BMI Tracker ships an update every 4 months, Water Tracker every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | BMI Tracker | Water Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Size | 6 MB | 39 MB |
| Requires iOS | 18.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cesar Ibarra](https://appshunter.io/developer/1076131150) | [Karan Soni](https://appshunter.io/developer/1822074953) |

## What reviewers say

### BMI Tracker

[App page](https://appshunter.io/ios/app/bmi-tracker-weight-log/id1606457096)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $2.99 | one-time |


### Water Tracker

[App page](https://appshunter.io/ios/app/water-tracker-aquatrack/id6789898553)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AquaTrack Pro Monthly | $17.99 | per month |
| Yearly | $34.99 | per year |


## Frequently asked questions

### Is BMI Tracker free?

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

### Is Water Tracker free?

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

### Do BMI Tracker or Water Tracker have ads?

Neither BMI Tracker nor Water Tracker shows ads.

### Which is updated more often, BMI Tracker or Water Tracker?

BMI Tracker ships an update every 4 months, and Water Tracker every 5 days. Most recently, BMI Tracker was updated on November 3, 2026 and Water Tracker on October 31, 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.*