# Caffeine Tracker vs HydroFoo

Caffeine Tracker and HydroFoo are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Caffeine Tracker sells 3 in-app purchases, starting at $2.99 per 7 days and HydroFoo sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Caffeine Tracker | HydroFoo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caffeine-tracker-moonlatte/id6751758649/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 20 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Pawel Karniej](https://appshunter.io/developer/1693356080) | [GARRETT MICHAEL WOODSIDE](https://appshunter.io/developer/1853175827) |

## What reviewers say

### Caffeine Tracker

[App page](https://appshunter.io/ios/app/caffeine-tracker-moonlatte/id6751758649)

This app helps you track your caffeine intake and understand its impact on your sleep, focus, and energy levels. It features a comprehensive database of drinks, real-time half-life calculations, and personalized insights to help you manage your consumption.

**Highlights:** Instant caffeine logging for various drinks, Real-time caffeine half-life calculator, Sleep impact analysis, Apple Watch companion app, Caffeine reduction goals, Smart reminders, Widget support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MoonLatte Weekly | $2.99 | per 7 days |
| Moon Latte Yearly | $9.99 | per year |
| Lifetime Premium Access | $19.99 | one-time |


### HydroFoo

[App page](https://appshunter.io/ios/app/hydrofoo-water-tracker/id6760419525)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HydroFoo Pro Monthly | $1.99 | per month |
| HydroFoo Pro Lifetime | $12.99 | one-time |


## Frequently asked questions

### Is Caffeine Tracker free?

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

### Is HydroFoo free?

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

### Do Caffeine Tracker or HydroFoo have ads?

Neither Caffeine Tracker nor HydroFoo shows ads.

### Which is updated more often, Caffeine Tracker or HydroFoo?

Caffeine Tracker ships an update every 2 months, and HydroFoo every 2 months. Most recently, Caffeine Tracker was updated on October 7, 2026 and HydroFoo on October 25, 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.*