# BIO3 vs AmiFit

The clearest difference is in-app purchases: BIO3 at none against AmiFit's 2. BIO3 also leads on update cadence (every 2 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AmiFit sells 2 in-app purchases, starting at $6.99 per month. BIO3 asks for nothing beyond the download.

BIO3 ships an update every 2 days, AmiFit every 3 weeks. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | BIO3 | AmiFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bio3/id6761016490/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 4 MB | 71 MB |
| Requires iOS | 18.5 | **18.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Yashaswini Rajendra Bhat](https://appshunter.io/developer/1887321102) | [X10 EAS](https://appshunter.io/developer/1641958326) |

## What reviewers say

### BIO3

[App page](https://appshunter.io/ios/app/bio3/id6761016490)

This app helps Dartmouth College BIO3 students track their mindfulness practice. Log meditation sessions, monitor progress, and view course leaderboard standings. It prioritizes user privacy with secure data storage and opt-in research participation.

**Highlights:** Log meditation sessions (duration, quality, stress), Track group practice participation, Monitor personal progress, View course leaderboard, Access mindfulness resources, Secure data storage

**Features:** macOS Compatibility

**In-app purchases:** none


### AmiFit

[App page](https://appshunter.io/ios/app/amifit-micronutrient-tracker/id6761309128)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AmiFit Monthly | $6.99 | per month |
| AmiFit Lifetime | $99.00 | one-time |


## Frequently asked questions

### Is BIO3 free?

BIO3 is free to download, with no in-app purchases.

### Is AmiFit free?

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

### Do BIO3 or AmiFit have ads?

Neither BIO3 nor AmiFit shows ads.

### Which is updated more often, BIO3 or AmiFit?

BIO3 ships an update every 2 days, and AmiFit every 3 weeks. Most recently, BIO3 was updated on October 16, 2026 and AmiFit on October 9, 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.*