# Noraxon Biofeedback vs GrafSets

The clearest difference is in-app purchases: Noraxon Biofeedback at none against GrafSets's 3. Noraxon Biofeedback also leads on iOS requirement (15.0 vs 17.0). GrafSets's advantage is update cadence (every 2 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. GrafSets sells 3 in-app purchases, starting at $2.99 per month. Noraxon Biofeedback asks for nothing beyond the download.

Noraxon Biofeedback ships an update every 3 months, GrafSets every 2 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Noraxon Biofeedback | GrafSets |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Size | 39 MB | 8 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Noraxon](https://appshunter.io/developer/1805591999) | [Guilherme Mazzei Graf](https://appshunter.io/developer/6813111808) |

## What reviewers say

### Noraxon Biofeedback

[App page](https://appshunter.io/ios/app/noraxon-biofeedback/id6744024468)

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

**In-app purchases:** none


### GrafSets

[App page](https://appshunter.io/ios/app/grafsets-rest-timer-for-gym/id6813111806)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GrafSets Pro Monthly | $2.99 | per month |
| GrafSets Pro Yearly | $19.99 | per year |
| GrafSets Pro Lifetime (Launch) | $3.99 | one-time |


## Frequently asked questions

### Is Noraxon Biofeedback free?

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

### Is GrafSets free?

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

### Do Noraxon Biofeedback or GrafSets have ads?

Neither Noraxon Biofeedback nor GrafSets shows ads.

### Which is updated more often, Noraxon Biofeedback or GrafSets?

Noraxon Biofeedback ships an update every 3 months, and GrafSets every 2 days. Most recently, Noraxon Biofeedback was updated on October 28, 2026 and GrafSets on October 29, 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.*