# Simply Water Hydration Tracker vs Protocol

The clearest difference is update cadence: Simply Water Hydration Tracker at weekly against Protocol's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Simply Water Hydration Tracker sells 1 one-off in-app purchase and Protocol sells 2 in-app purchases, starting at $39.99 per year. Whichever you choose, the download price is not the number that matters.

Simply Water Hydration Tracker ships an update weekly, Protocol every 2 months. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Simply Water Hydration Tracker | Protocol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/simply-water-hydration-tracker/id6742065968/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 41 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Corey Foster](https://appshunter.io/developer/1492748951) | [Kevin Marsh](https://appshunter.io/developer/1273893146) |

## What reviewers say

### Simply Water Hydration Tracker

[App page](https://appshunter.io/ios/app/simply-water-hydration-tracker/id6742065968)

Effortlessly track your daily water intake with a beautiful, minimalist interface. Set personal hydration goals and view your progress with quick-log presets or custom amounts. Your data remains private and on your device.

**Highlights:** Quick-log presets, Custom amount logging, Daily goal tracking, Hydration history, Metric & Imperial support, Minimalist design, Dark mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $1.99 | one-time |


### Protocol

[App page](https://appshunter.io/ios/app/protocol-dose-and-lab-tracker/id6800878308)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual | $39.99 | per year |
| Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Simply Water Hydration Tracker free?

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

### Is Protocol free?

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

### Do Simply Water Hydration Tracker or Protocol have ads?

Neither Simply Water Hydration Tracker nor Protocol shows ads.

### Which is updated more often, Simply Water Hydration Tracker or Protocol?

Simply Water Hydration Tracker ships an update weekly, and Protocol every 2 months. Most recently, Simply Water Hydration Tracker was updated on October 10, 2026 and Protocol on October 15, 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.*