# Hydra vs Creatine Jotter

The clearest difference is in-app purchases: Creatine Jotter at none against Hydra's 2. Creatine Jotter also leads on update cadence (every 2 weeks vs every 6 months). Hydra's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price and ads there is nothing between them.

Both are free to download. Hydra sells 2 in-app purchases, starting at $6.99 per month. Creatine Jotter asks for nothing beyond the download.

Hydra ships an update every 6 months, Creatine Jotter every 2 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Hydra | Creatine Jotter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Size | 42 MB | 8 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Ryan Creary](https://appshunter.io/developer/1819349085) | [Jack Barrable](https://appshunter.io/developer/1781563118) |

## What reviewers say

### Hydra

[App page](https://appshunter.io/ios/app/hydra-creatine-water-tracker/id6764020000)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hydra Pro Monthly | $6.99 | per month |
| Hydra Pro Annual | $39.99 | per year |


### Creatine Jotter

[App page](https://appshunter.io/ios/app/creatine-jotter-dose-tracker/id6796774452)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hydra free?

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

### Is Creatine Jotter free?

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

### Do Hydra or Creatine Jotter have ads?

Neither Hydra nor Creatine Jotter shows ads.

### Which is updated more often, Hydra or Creatine Jotter?

Hydra ships an update every 6 months, and Creatine Jotter every 2 weeks. Most recently, Hydra was updated on November 5, 2026 and Creatine Jotter on October 31, 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.*