# WaterTracker vs IntervalFlow

WaterTracker and IntervalFlow 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. Neither carries in-app purchases, so what you see is what you pay.

WaterTracker ships an update fortnightly, IntervalFlow every 4 weeks. The most recent releases landed on August 30, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | WaterTracker | IntervalFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Size | 29 MB | 1 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ethan Milton Wilde](https://appshunter.io/developer/1892997468) | [Hyunwoo Lee](https://appshunter.io/developer/1883358620) |

## What reviewers say

### WaterTracker

[App page](https://appshunter.io/ios/app/watertracker-lifetracker/id6780416566)

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

**In-app purchases:** none


### IntervalFlow

[App page](https://appshunter.io/ios/app/intervalflow-hiit-timer/id6788945849)

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

**In-app purchases:** none


## Frequently asked questions

### Is WaterTracker free?

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

### Is IntervalFlow free?

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

### Do WaterTracker or IntervalFlow have ads?

Neither WaterTracker nor IntervalFlow shows ads.

### Which is updated more often, WaterTracker or IntervalFlow?

WaterTracker ships an update fortnightly, and IntervalFlow every 4 weeks. Most recently, WaterTracker was updated on August 30, 2026 and IntervalFlow on September 18, 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.*