# Alt vs FlightSpan

The clearest difference is update cadence: FlightSpan at every 6 weeks against Alt's every 15 months. 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.

Alt ships an update every 15 months, FlightSpan every 6 weeks. The most recent releases landed on August 3, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Alt | FlightSpan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/alt-o-meter/id1073846820/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 78.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 3 MB | 11 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Joshua Hinman](https://appshunter.io/developer/1073846819) | [JAARS, Inc.](https://appshunter.io/developer/1581595970) |

## What reviewers say

### Alt

[App page](https://appshunter.io/ios/app/alt-o-meter/id1073846820)

This app calculates your precise altitude above sea level using your device's barometer or GPS. It offers a realistic, retro design and automatically calibrates for local atmospheric pressure, with optional manual calibration for advanced users.

**Highlights:** Barometer-based altitude calculation, GPS fallback for devices without barometer, Automatic local pressure calibration, Optional user calibration, Retro-style interface, Precise height above sea level

**In-app purchases:** none


### FlightSpan

[App page](https://appshunter.io/ios/app/flightspan-tools/id6754396580)

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

**In-app purchases:** none


## Frequently asked questions

### Is Alt free?

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

### Is FlightSpan free?

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

### Do Alt or FlightSpan have ads?

Neither Alt nor FlightSpan shows ads.

### Which is updated more often, Alt or FlightSpan?

Alt ships an update every 15 months, and FlightSpan every 6 weeks. Most recently, Alt was updated on August 3, 2026 and FlightSpan on September 21, 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.*