# Apollo ProFlow vs InsideWater

The clearest difference is device support: Apollo ProFlow at 3 against InsideWater's —. On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 19, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Apollo ProFlow | InsideWater |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 3 months | Every 3 months |
| Size | 43 MB | 31 MB |
| Requires iOS | 14.7 | **13.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [SV Technics](https://appshunter.io/developer/1384360031) | [AQUA SPA](https://appshunter.io/developer/1610112085) |

## What reviewers say

### Apollo ProFlow

[App page](https://appshunter.io/ios/app/apollo-proflow/id1574283960)

**Features:** macOS Compatibility

**In-app purchases:** none


### InsideWater

[App page](https://appshunter.io/ios/app/insidewater/id6446782142)

**In-app purchases:** none


## Frequently asked questions

### Is Apollo ProFlow free?

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

### Is InsideWater free?

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

### Which is updated more often, Apollo ProFlow or InsideWater?

Apollo ProFlow ships an update every 3 months, and InsideWater every 3 months. Most recently, Apollo ProFlow was updated on September 19, 2026 and InsideWater on September 10, 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.*