# Water Intake Tracker vs Primal Fast

The clearest difference is update cadence: Water Intake Tracker at daily against Primal Fast's every 8 days. Primal Fast's advantage is iOS requirement (15.1 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Water Intake Tracker sells 1 in-app purchase, starting at $3.99 per 7 days and Primal Fast sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Water Intake Tracker ships an update daily, Primal Fast every 8 days. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Water Intake Tracker | Primal Fast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 8 days |
| Size | 9 MB | 43 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mikhail Repenko](https://appshunter.io/developer/1823492692) | [SERGEI JELUASVILI](https://appshunter.io/developer/1896539644) |

## What reviewers say

### Water Intake Tracker

[App page](https://appshunter.io/ios/app/water-intake-tracker-daily/id6773262303)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium! | $3.99 | per 7 days |


### Primal Fast

[App page](https://appshunter.io/ios/app/primal-fast-carnivore-timer/id6780590381)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Primal Fast Pro — Monthly | $6.99 | per month |
| Primal Fast Pro — Annual | $34.99 | per year |


## Frequently asked questions

### Is Water Intake Tracker free?

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

### Is Primal Fast free?

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

### Do Water Intake Tracker or Primal Fast have ads?

Neither Water Intake Tracker nor Primal Fast shows ads.

### Which is updated more often, Water Intake Tracker or Primal Fast?

Water Intake Tracker ships an update daily, and Primal Fast every 8 days. Most recently, Water Intake Tracker was updated on October 31, 2026 and Primal Fast on October 28, 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.*