# IronDojo vs BIO3

The clearest difference is update cadence: BIO3 at every 2 days against IronDojo's fortnightly. IronDojo's advantage is ratings volume (6 vs 2). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for IronDojo against 5.0 for BIO3. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

IronDojo ships an update fortnightly, BIO3 every 2 days. The most recent releases landed on October 5, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | IronDojo | BIO3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (6 ratings)](https://appshunter.io/ios/app/irondojo-workout-tracker/id6504539909/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/bio3/id6761016490/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free | Free |
| Size | 94 MB | 4 MB |
| Requires iOS | **17.2** | 18.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Ryan Pontes](https://appshunter.io/developer/1744745322) | [Yashaswini Rajendra Bhat](https://appshunter.io/developer/1887321102) |

## What reviewers say

### IronDojo

[App page](https://appshunter.io/ios/app/irondojo-workout-tracker/id6504539909)

Log gym workouts with detailed sets, reps, and weights, and track your progress with strength graphs and PR history. Connect with your local fitness community, compete in weekly challenges, and stay motivated with friends through workout feeds and private groups.

**Highlights:** Detailed workout logging (sets, reps, weights), Custom routine creation, Progress tracking with strength graphs, Social workout feeds and community interaction, Gym and friend leaderboards, Weekly competitions

**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 IronDojo free?

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

### Is BIO3 free?

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

### Which has better reviews, IronDojo or BIO3?

IronDojo and BIO3 are both rated 5.0 out of 5 on the App Store, from 6 and 2 ratings respectively.

### Do IronDojo or BIO3 have ads?

Neither IronDojo nor BIO3 shows ads.

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

IronDojo ships an update fortnightly, and BIO3 every 2 days. Most recently, IronDojo was updated on October 5, 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.*