# ARMA BJJ vs BIO3

The clearest difference is update cadence: BIO3 at every 2 days against ARMA BJJ's every 3 months. ARMA BJJ's advantage is iOS requirement (15.6 vs 18.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ARMA BJJ ships an update every 3 months, BIO3 every 2 days. The most recent releases landed on September 29, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | ARMA BJJ | BIO3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bio3/id6761016490/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 32 MB | 4 MB |
| Requires iOS | **15.6** | 18.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ARMA BJJ Limited](https://appshunter.io/developer/1819916182) | [Yashaswini Rajendra Bhat](https://appshunter.io/developer/1887321102) |

## What reviewers say

### ARMA BJJ

[App page](https://appshunter.io/ios/app/arma-bjj/id6747117289)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is ARMA BJJ free?

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

### Is BIO3 free?

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

### Do ARMA BJJ or BIO3 have ads?

Neither ARMA BJJ nor BIO3 shows ads.

### Which is updated more often, ARMA BJJ or BIO3?

ARMA BJJ ships an update every 3 months, and BIO3 every 2 days. Most recently, ARMA BJJ was updated on September 29, 2026 and BIO3 on October 16, 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.*