# Water Tracker vs Onefast

The clearest difference is update cadence: Onefast at every 2 days against Water Tracker's every 10 days. Water Tracker's advantage is iOS requirement (10.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Water Tracker sells 1 one-off in-app purchase and Onefast sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

Water Tracker ships an update every 10 days, Onefast every 2 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Water Tracker | Onefast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (2 ratings)](https://appshunter.io/ios/app/water-tracker-drink-reminder/id1357247400/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 4 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JUPITER TEKNOLOJI SANAYI VE TICARET LIMITED SIRKETI](https://appshunter.io/developer/1400061771) | [Nguyen Dinh Chung](https://appshunter.io/developer/6805296065) |

## What reviewers say

### Water Tracker

[App page](https://appshunter.io/ios/app/water-tracker-drink-reminder/id1357247400)

This application helps you maintain proper hydration by sending timely reminders to drink water throughout the day. It calculates your daily water needs based on your weight and tracks your intake, promoting better health and skin.

**Highlights:** Daily water intake reminders, Personalized hydration goals, Tracks water consumption, Promotes healthy skin, Supports weight loss, Hydration after workouts

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Water Reminder & Alert No-Ads | $1.99 | one-time |


### Onefast

[App page](https://appshunter.io/ios/app/onefast-fasting-timer/id6810987516)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Onefast Pro (Yearly) | $9.99 | per year |
| Onefast Pro (Lifetime) | $19.99 | one-time |


## Frequently asked questions

### Is Water Tracker free?

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

### Is Onefast free?

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

### Do Water Tracker or Onefast have ads?

Neither Water Tracker nor Onefast shows ads.

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

Water Tracker ships an update every 10 days, and Onefast every 2 days. Most recently, Water Tracker was updated on October 24, 2026 and Onefast on October 29, 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.*