Interval Flow vs Watch Hydration
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Interval Flow
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Have you wanted to set the same timers over and over again but find it tedious and cumbersome? We did too so we built Interval Flow! With Interval Flow, you can easily set multiple timers that will ring one after the other, guiding you seamlessly through your activities. Transition effortlessly from one activity to another, whether it's your breathing exercises, stretching sessions, or any other tasks you have in mind. Interval Flow let's you create multiple programs tailored to your specific needs and preferences (watchOS 10+). With just a few taps on your Apple Watch, you can effortlessly switch between programs and enjoy a seamless flow of activities, staying focused and productive. Interval Flow ensures that your Apple Watch becomes a smart partner, helping you stay on track without any distractions. So, the question is, why settle for a standard timer when you can elevate your Apple Watch experience with Interval Flow? It's a game-changer for anyone who values their time and wants to make the most of every minute.
Watch Hydration
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Log water intake to HealthKit straight from your wrist! Watch Hydration is a free, simple watchOS app which enables you to quickly enter an amount of liquid and log it straight to HealthKit. Select the cup to choose different liquids, each with their own modifier to ensure you reach your goal. Easily update your goal, and check your progress for the day. Simple, optional, notifications which let you know if you managed to hit your goal or not yesterday.
Verdict
The clearest difference is in-app purchases: Watch Hydration at none against Interval Flow's 1. Interval Flow's advantage is iOS requirement (15.6 vs 17.6). On price, update cadence, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Interval Flow sells 1 one-off in-app purchase. Watch Hydration asks for nothing beyond the download.
Interval Flow ships an update every 2 weeks, Watch Hydration every 3 weeks. The most recent releases landed on September 8, 2026 and September 19, 2026 respectively.
| Parameter | Interval Flow | Watch Hydration |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks โ better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPod, Apple Watch โ better | iPhone, Apple Watch |
| Requires iOS | 15.6 โ better | 17.6 |
| Further details โ not scored | ||
| Size | 8 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Tegyaan | Thomas Chatting |
In-app purchases
Interval Flow
- Multiple Programs$3.99
Watch Hydration
No in-app purchases
Questions
Is Interval Flow free?
Is Watch Hydration free?
Do Interval Flow or Watch Hydration have ads?
Which is updated more often, Interval Flow or Watch Hydration?
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