# T vs Altimeter

The clearest difference is in-app purchases: T at none against Altimeter's 3. T also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Altimeter sells 3 in-app purchases, starting at $2.99 per 7 days. T asks for nothing beyond the download.

## The numbers

| Metric | T | Altimeter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 weeks |
| Size | 47 MB | 8 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [T-SOFT INC](https://appshunter.io/developer/1488887836) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### T

[App page](https://appshunter.io/ios/app/t-car/id1665853993)

**Features:** macOS Compatibility

**In-app purchases:** none


### Altimeter

[App page](https://appshunter.io/ios/app/altimeter-gps-elevation/id6772261844)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Climb Log: Weekly | $2.99 | per 7 days |
| Summit Height: Yearly | $14.99 | per year |
| Offline Altitude: Pay Once | $29.99 | one-time |


## Frequently asked questions

### Is T free?

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

### Is Altimeter free?

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

### Do T or Altimeter have ads?

Neither T nor Altimeter shows ads.

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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.*