# Waterfy vs IntervalFlow

The clearest difference is in-app purchases: IntervalFlow at none against Waterfy's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Waterfy sells 3 in-app purchases, starting at $1.99 per month. IntervalFlow asks for nothing beyond the download.

Waterfy ships an update monthly, IntervalFlow every 4 weeks. The most recent releases landed on June 28, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Waterfy | IntervalFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 weeks** |
| Size | 86 MB | 1 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FORGE OF THE GODS LLC](https://appshunter.io/developer/1831966958) | [Hyunwoo Lee](https://appshunter.io/developer/1883358620) |

## What reviewers say

### Waterfy

[App page](https://appshunter.io/ios/app/waterfy-water-tracker/id6760442384)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium for a month | $1.99 | per month |
| Premium for half a year | $7.99 | per 6 months |
| Premium for a year | $14.99 | per year |


### 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 Waterfy free?

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

### Is IntervalFlow free?

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

### Do Waterfy or IntervalFlow have ads?

Neither Waterfy nor IntervalFlow shows ads.

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

Waterfy ships an update monthly, and IntervalFlow every 4 weeks. Most recently, Waterfy was updated on June 28, 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.*