# Drink Water vs Fast

The clearest difference is in-app purchases: Drink Water at none against Fast's 2. Drink Water also leads on ads (none vs shown). Fast's advantage is update cadence (every 12 months vs every 34 months) and iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Fast sells 2 in-app purchases, starting at $4.99 per month. Drink Water asks for nothing beyond the download.

Drink Water ships an update every 34 months, Fast every 12 months. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Drink Water | Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/drink-water-hydration-log/id1547021474/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 34 months | **Every 12 months** |
| Monetization | Free | — |
| Size | 30 MB | 74 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Marlon Souza](https://appshunter.io/developer/1506853837) | [kota tada](https://appshunter.io/developer/1658942612) |

## What reviewers say

### Drink Water

[App page](https://appshunter.io/ios/app/drink-water-hydration-log/id1547021474)

This app helps you track your daily water intake and provides reminders to stay hydrated. It calculates your recommended water consumption based on your weight and offers insights into the benefits of drinking water for overall health.

**Highlights:** Personalized water intake calculation, Customizable hydration reminders, Weekly and annual consumption history, Information on water's health benefits, Calculates needs based on weight

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

**In-app purchases:** none


### Fast

[App page](https://appshunter.io/ios/app/fast-fasting-timer/id6743695812)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free for 1 month | $4.99 | per month |
| Ad-free for 1 year | $49.99 | per year |


## Frequently asked questions

### Is Drink Water free?

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

### Is Fast free?

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

### Do Drink Water or Fast have ads?

Fast shows ads; Drink Water does not.

### Which is updated more often, Drink Water or Fast?

Drink Water ships an update every 34 months, and Fast every 12 months. Most recently, Drink Water was updated on September 11, 2026 and Fast on September 9, 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.*