# Interval Flow vs WaveMix Sleep Sound Soundscape

The clearest difference is monetization model: WaveMix Sleep Sound Soundscape at free with in-app purchases against Interval Flow's subscription. WaveMix Sleep Sound Soundscape also leads on update cadence (every 5 days vs fortnightly) and iOS requirement (12.0 vs 18.6). Interval Flow's advantage is rating (4.7 vs 4.5). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Interval Flow sells 10 in-app purchases, starting at $4.99 per 3 months and WaveMix Sleep Sound Soundscape sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Flow holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 167 and 164 respectively. Written reviews split almost evenly too, at 48% and 48% positive.

Interval Flow ships an update fortnightly, WaveMix Sleep Sound Soundscape every 5 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Interval Flow | WaveMix Sleep Sound Soundscape |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (167 ratings)](https://appshunter.io/ios/app/interval-flow-wod-timer/id6444124987/reviews)** | [4.5 (164 ratings)](https://appshunter.io/ios/app/wavemix-sleep-sound-soundscape/id6470282762/reviews) |
| Number of ratings | **167** | 164 |
| Positive reviews | **48.1% of reviews** | 47.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 20 MB | 87 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bence Kaposzta](https://appshunter.io/developer/1650069302) | [Onat Cipli](https://appshunter.io/developer/1499186364) |

## What reviewers say

### Interval Flow

[App page](https://appshunter.io/ios/app/interval-flow-wod-timer/id6444124987)

This app revolutionizes fitness routines with deep customization and advanced tracking for various activities like HIIT, Yoga, and CrossFit. It allows users to create, share, and follow personalized workouts with features like color-coded intervals, real-time progress tracking, and voice assistance.

**Highlights:** Color-coded intervals, Customizable circuits, Real-time progress tracking, Voice assist and search, Exercise library, Workout sharing

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Month | $4.99 | per 3 months |
| 1 Month | $9.99 | per month |
| 1 Month, 3 day trial | $9.99 | per month |
| Annual | $14.99 | per year |
| 1 Year discounted | $25.95 | per year |
| 1 Year, 3 day trial | $39.99 | per year |
| 1 Year | $39.99 | per year |
| 1 Year Intro month | $39.99 | per year |
| Free Lifetime subscription | Free | one-time |
| Lifetime | $24.99 | one-time |

**What reviewers like**

- 👍 Nicely designed with good features
- 👍 Unique and brilliantly for keeping fit
- 👍 Simplicity gets it done

**What reviewers complain about**

- 🐛 App crashes on launch
- 🐛 App doesn't remember interval settings
- 🐛 App rearranges workout order
- 🐛 Cannot see questionnaire properly
- 🐛 Robot voice with no visual instructions

**Reported bugs**

- Programs deleted after update
- App crashes when adding a program
- Show/Hide Instructions adds time to interval
- App defaults to unused workout
- Cannot permanently skip to end of timed activity

**Requested features**

- Increase repetitions to 20
- Streamline adding intervals
- Make it possible to hide unused workouts
- Add music integration or option
- Provide visual instructions for moves


### WaveMix Sleep Sound Soundscape

[App page](https://appshunter.io/ios/app/wavemix-sleep-sound-soundscape/id6470282762)

Create personalized soundscapes for sleep, focus, and relaxation. Mix nature sounds, white noise, and melodies with a customizable timer. Share and discover mixes from the community.

**Highlights:** Customizable sound mixes, Sleep timer, Offline listening, Background playback, Community sound mixes, Favorites list

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $34.99 | per year |
| Premium Lifetime | $1.99 | one-time |
| Premium LifeTime | $9.99 | one-time |

**What reviewers like**

- 👍 Good variety of sounds
- 👍 High quality sounds
- 👍 Enjoyable app
- 👍 Helpful for sleep
- 👍 Nice user interface

**What reviewers complain about**

-  deceptive advertising
- 💳 Unwanted subscriptions
- 🐛 Difficult interface
- 🐛 Small volume sliders
- 🐛 Non-intuitive icons

**Reported bugs**

- In-app purchases appear free on store
- Volume sliders too small and insensitive
- Non-intuitive icons
- Loops start and stop frequently
- Second tab has empty columns

**Requested features**

- Larger volume sliders
- Thorough tutorial
- Longer loops
- Better loop connections
- French translation


## Frequently asked questions

### Is Interval Flow free?

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

### Is WaveMix Sleep Sound Soundscape free?

WaveMix Sleep Sound Soundscape is free to download, with in-app purchases available.

### Which has better reviews, Interval Flow or WaveMix Sleep Sound Soundscape?

Interval Flow is rated higher. Interval Flow averages 4.7 out of 5 from 167 ratings, while WaveMix Sleep Sound Soundscape averages 4.5 from 164 ratings.

### Do Interval Flow or WaveMix Sleep Sound Soundscape have ads?

Neither Interval Flow nor WaveMix Sleep Sound Soundscape shows ads.

### Which is updated more often, Interval Flow or WaveMix Sleep Sound Soundscape?

Interval Flow ships an update fortnightly, and WaveMix Sleep Sound Soundscape every 5 days. Most recently, Interval Flow was updated on October 23, 2026 and WaveMix Sleep Sound Soundscape on October 24, 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.*