# AmbientWave vs FlowCAL

The clearest difference is iOS requirement: AmbientWave at 15.0 against FlowCAL's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

AmbientWave ships an update every 5 days, FlowCAL every 3 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AmbientWave | FlowCAL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ambientwave/id6756723341/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 285 MB | 3 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Paul Crowley](https://appshunter.io/developer/1862512679) | [GEN WATANABE](https://appshunter.io/developer/6788954600) |

## What reviewers say

### AmbientWave

[App page](https://appshunter.io/ios/app/ambientwave/id6756723341)

Create personalized ambient soundscapes for focus, relaxation, or sleep. Mix various environmental sounds like rain, wind, and ocean with individual volume controls for a seamless listening experience.

**Highlights:** Mix multiple ambient sounds, Continuous loop playback, Individual sound volume control, Unlockable sound variations (Pro), White/Pink/Brown noise (Pro), Sleep timer (Pro)

**Features:** macOS Compatibility

**In-app purchases:** none


### FlowCAL

[App page](https://appshunter.io/ios/app/flowcal-vertical-calendar/id6817642589)

**In-app purchases:** none


## Frequently asked questions

### Is AmbientWave free?

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

### Is FlowCAL free?

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

### Do AmbientWave or FlowCAL have ads?

Neither AmbientWave nor FlowCAL shows ads.

### Which is updated more often, AmbientWave or FlowCAL?

AmbientWave ships an update every 5 days, and FlowCAL every 3 days. Most recently, AmbientWave was updated on November 5, 2026 and FlowCAL on October 31, 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.*