# StatsKey vs Hydro Reminder

The clearest difference is ads: StatsKey at none against Hydro Reminder's shown. StatsKey also leads on update cadence (every 2 days vs monthly). Hydro Reminder's advantage is iOS requirement (13.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. StatsKey sells 6 in-app purchases, starting at $14.99 per month and Hydro Reminder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

StatsKey ships an update every 2 days, Hydro Reminder monthly. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | StatsKey | Hydro Reminder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/statskey/id6751132823/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 117 MB | 25 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ryan Sullivan](https://appshunter.io/developer/1833616212) | [Mohammed Abdullah](https://appshunter.io/developer/1576203058) |

## What reviewers say

### StatsKey

[App page](https://appshunter.io/ios/app/statskey/id6751132823)

This comprehensive health and performance platform offers advanced nutrition tracking through AI image recognition, text input, and barcode scanning. It integrates with Apple Health for biometric data and provides a professional-grade training platform with GPS tracking and workout analytics.

**Highlights:** AI-powered nutrition tracking, Apple Health integration, Biometric data analysis, GPS workout tracking, Social competition features, Customizable nutrition targets

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Elite Monthly | $14.99 | per month |
| StatsKey Pro | $29.99 | per month |
| StatsKey Pro+ (Legacy) | $29.99 | per month |
| Elite Annual | $114.99 | per year |
| StatsKey Pro Annual (Legacy) | $699.00 | per year |
| StatsKey Pro+ Annual (Legacy) | $999.00 | per year |


### Hydro Reminder

[App page](https://appshunter.io/ios/app/hydro-reminder-water-tracker/id6757192483)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hydro Reminder Pro | $2.99 | one-time |


## Frequently asked questions

### Is StatsKey free?

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

### Is Hydro Reminder free?

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

### Do StatsKey or Hydro Reminder have ads?

Hydro Reminder shows ads; StatsKey does not.

### Which is updated more often, StatsKey or Hydro Reminder?

StatsKey ships an update every 2 days, and Hydro Reminder monthly. Most recently, StatsKey was updated on October 24, 2026 and Hydro Reminder on October 14, 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.*