# Biorhythmmm vs Drift

The clearest difference is rating: Drift at 5.0 against Biorhythmmm's 4.3. Drift also leads on update cadence (weekly vs every 2 months) and ratings volume (17 vs 3). Biorhythmmm's advantage is in-app purchases (none vs 4) and iOS requirement (15.0 vs 17.0). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. Drift sells 4 in-app purchases, starting at $3.99 per month. Biorhythmmm asks for nothing beyond the download.

Drift holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Drift has 17 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Biorhythmmm ships an update every 2 months, Drift weekly. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Biorhythmmm | Drift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/biorhythmmm/id6737791240/reviews) | **[5.0 (17 ratings)](https://appshunter.io/ios/app/drift-sea-synthesis/id6760372445/reviews)** |
| Number of ratings | 3 | **17** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | Free |
| Size | 23 MB | 86 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nathanatos Software](https://appshunter.io/developer/342122921) | [Alex Scarlett](https://appshunter.io/developer/845026119) |

## What reviewers say

### Biorhythmmm

[App page](https://appshunter.io/ios/app/biorhythmmm/id6737791240)

Visualize your personal biorhythm cycles with interactive graphs. Explore past and future trends to understand how intellectual, emotional, and physical cycles might influence your daily life. Add cycles for family and friends.

**Highlights:** Interactive biorhythm graphs, Past and future cycle exploration, Intellectual, emotional, and physical cycles, Support for secondary cycles, Add cycles for family and friends

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

**In-app purchases:** none


### Drift

[App page](https://appshunter.io/ios/app/drift-sea-synthesis/id6760372445)

Experience the ocean's dynamic soundscapes in real time. This app uses live data from NOAA buoys to generate unique ambient audio based on wave height, wind speed, and temperature. Perfect for focus, sleep, or relaxation, it offers an immersive connection to the sea.

**Highlights:** Live NOAA buoy data for real-time audio, Generative ambient soundscapes, Ocean, rain, and wind synthesis, Studio-grade DSP engine, Designed for focus and sleep, Buoy selection across US and Canada

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Drift Pro | $3.99 | per month |
| Drift Pro | $24.99 | per year |
| Drift Premium | $4.99 | one-time |
| Drift Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Biorhythmmm free?

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

### Is Drift free?

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

### Which has better reviews, Biorhythmmm or Drift?

Drift is rated higher. Biorhythmmm averages 4.3 out of 5 from 3 ratings, while Drift averages 5.0 from 17 ratings.

### Do Biorhythmmm or Drift have ads?

Neither Biorhythmmm nor Drift shows ads.

### Which is updated more often, Biorhythmmm or Drift?

Biorhythmmm ships an update every 2 months, and Drift weekly. Most recently, Biorhythmmm was updated on October 24, 2026 and Drift on October 13, 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.*