# AltimeterThree vs RioLearn

The clearest difference is rating: AltimeterThree at 4.6 against RioLearn's 2.1. AltimeterThree also leads on review sentiment (67% vs 25%). RioLearn's advantage is update cadence (every 2 weeks vs monthly) and ratings volume (36 vs 5). On price, ads, in-app purchases and monetization model there is nothing between them.

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

AltimeterThree holds the better App Store score, 4.6 against 2.1. That said, the two scores are not equally well evidenced: RioLearn has 36 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 67% of AltimeterThree's written reviews are positive against 25% of RioLearn's.

AltimeterThree ships an update monthly, RioLearn every 2 weeks. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | AltimeterThree | RioLearn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/altimeterthree/id924087924/reviews)** | [2.1 (36 ratings)](https://appshunter.io/ios/app/riolearn/id1473003067/reviews) |
| Number of ratings | 5 | **36** |
| Positive reviews | **66.7% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 94 MB | 58 MB |
| Requires iOS | **7.0** | 8.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jolly Logic, LLC](https://appshunter.io/developer/924087923) | [Maricopa County Community College District](https://appshunter.io/developer/588001668) |

## What reviewers say

### AltimeterThree

[App page](https://appshunter.io/ios/app/altimeterthree/id924087924)

This companion app wirelessly connects to a physical altimeter device to record and analyze flight data for various flying objects. Visualize altitude and acceleration with interactive graphs, share your flight statistics, and export data for in-depth analysis.

**Highlights:** Wireless Bluetooth connection, Real-time battery and status display, Altitude and acceleration recording, Interactive flight data graphs, Data export for analysis, Social media sharing of flight stats

**Features:** macOS Compatibility

**In-app purchases:** none


### RioLearn

[App page](https://appshunter.io/ios/app/riolearn/id1473003067)

Access your Rio Salado College courses with greater flexibility. Learn on your schedule, anytime and anywhere, bringing the convenience of college to your mobile device.

**Highlights:** Mobile access to college courses, Flexible learning schedule, Learn anytime, anywhere, On-the-go education

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AltimeterThree free?

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

### Is RioLearn free?

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

### Which has better reviews, AltimeterThree or RioLearn?

AltimeterThree is rated higher. AltimeterThree averages 4.6 out of 5 from 5 ratings, while RioLearn averages 2.1 from 36 ratings.

### Do AltimeterThree or RioLearn have ads?

Neither AltimeterThree nor RioLearn shows ads.

### Which is updated more often, AltimeterThree or RioLearn?

AltimeterThree ships an update monthly, and RioLearn every 2 weeks. Most recently, AltimeterThree was updated on October 7, 2026 and RioLearn 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.*