# SelfAffirm vs Water Reminder

The clearest difference is in-app purchases: SelfAffirm at none against Water Reminder's 4. SelfAffirm also leads on update cadence (daily vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Water Reminder sells 4 in-app purchases, starting at $2.49 per month. SelfAffirm asks for nothing beyond the download.

SelfAffirm ships an update daily, Water Reminder monthly. The most recent releases landed on October 27, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | SelfAffirm | Water Reminder |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Monthly |
| Monetization | — | Freemium |
| Size | 36 MB | 32 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Vladislav Sokolov](https://appshunter.io/developer/1753892194) | [HILAL GUL FAIZY](https://appshunter.io/developer/1768331698) |

## What reviewers say

### SelfAffirm

[App page](https://appshunter.io/ios/app/selfaffirm/id6605940559)

**Features:** macOS Compatibility

**In-app purchases:** none


### Water Reminder

[App page](https://appshunter.io/ios/app/water-reminder-hydrakit/id6736592877)

This app helps you track your daily water intake and build healthy hydration habits. It offers personalized reminders, customizable goals, and insightful progress tracking to ensure you stay adequately hydrated throughout the day.

**Highlights:** Home screen widgets for quick logging, Animated water wave progress visualization, Personalized hydration goal setting, Customizable cup sizes and reminders, Edit past water intake records, Detailed monthly and yearly hydration insights, Smart hydration suggestions based on activity and weather

**Features:** Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HydraKit Premium (Monthly) | $2.49 | per month |
| HydraKit Premium (Annual) | $11.99 | per year |
| HydraKit (Remove Ads) | $1.99 | one-time |
| HydraKit Premium (Lifetime) | $32.99 | one-time |


## Frequently asked questions

### Is SelfAffirm free?

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

### Is Water Reminder free?

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

### Do SelfAffirm or Water Reminder have ads?

Neither SelfAffirm nor Water Reminder shows ads.

### Which is updated more often, SelfAffirm or Water Reminder?

SelfAffirm ships an update daily, and Water Reminder monthly. Most recently, SelfAffirm was updated on October 27, 2026 and Water Reminder on October 23, 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.*