# Challenge vs Drink Flow

The clearest difference is price: Challenge at Free against Drink Flow's $2.99. Challenge also leads on iOS requirement (13.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Challenge is free to download; Drink Flow costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Challenge | Drink Flow |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/drink-flow-water-intake-logs/id6762357349/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Monetization | — | Paid |
| Size | 1 MB | 42 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jackson Tubbs](https://appshunter.io/developer/1481411436) | [Feng Chen](https://appshunter.io/developer/1335869457) |

## What reviewers say

### Challenge

[App page](https://appshunter.io/ios/app/challenge-accepted/id1483491483)

**Features:** macOS Compatibility

**In-app purchases:** none


### Drink Flow

[App page](https://appshunter.io/ios/app/drink-flow-water-intake-logs/id6762357349)

This app helps you stay hydrated with smart reminders and easy logging. It offers personalized goals, tracks your progress, and helps build consistent healthy habits.

**Highlights:** Smart water reminders, Personalized hydration goals, One-tap intake logging, Daily progress view, Streaks & weekly trends, Custom reminder schedule

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

**In-app purchases:** none


## Frequently asked questions

### Is Challenge free?

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

### Is Drink Flow free?

Drink Flow costs $2.99, with no in-app purchases.

### Do Challenge or Drink Flow have ads?

Neither Challenge nor Drink Flow shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*