# Biorhythm Graph vs Flow

The clearest difference is price: Flow at Free against Biorhythm Graph's $0.99. Flow also leads on iOS requirement (15.0 vs 17.0). Biorhythm Graph's advantage is in-app purchases (none vs 3) and ads (none vs shown). On update cadence and device support there is nothing between them.

Flow is free to download; Biorhythm Graph costs $0.99 up front. Flow sells 3 in-app purchases, starting at $2.99 per month. Biorhythm Graph asks for nothing beyond the download.

Biorhythm Graph ships an update every 6 months, Flow every 9 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Biorhythm Graph | Flow |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/biorhythm-graph/id893875754/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 months** | Every 9 months |
| Monetization | Paid | — |
| Size | 11 MB | 8 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shuji Fukumoto](https://appshunter.io/developer/286423439) | [Nano Digital Helsinki Oy](https://appshunter.io/developer/371919851) |

## What reviewers say

### Biorhythm Graph

[App page](https://appshunter.io/ios/app/biorhythm-graph/id893875754)

Visualize personal biorhythm cycles with detailed graphs. Supports integration with Today Extension and Apple Watch for convenient access. Track multiple individuals' cycles easily.

**Highlights:** Display multiple biorhythm graphs, Support Today Extension, Apple Watch app support, Complication support, Granse support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Flow

[App page](https://appshunter.io/ios/app/flow-focus-training/id1590304560)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flow+ Subscription One Month | $2.99 | per month |
| Flow+ Subscription One Year | $19.99 | per year |
| Flow+ Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Biorhythm Graph free?

Biorhythm Graph costs $0.99, with no in-app purchases.

### Is Flow free?

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

### Do Biorhythm Graph or Flow have ads?

Flow shows ads; Biorhythm Graph does not.

### Which is updated more often, Biorhythm Graph or Flow?

Biorhythm Graph ships an update every 6 months, and Flow every 9 months. Most recently, Biorhythm Graph was updated on October 29, 2026 and Flow on October 30, 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.*