# Altitude Checker vs Tranthru

The clearest difference is ads: Tranthru at none against Altitude Checker's shown. Tranthru also leads on iOS requirement (7.0 vs 15.0). Altitude Checker's advantage is review sentiment (82% vs 67%). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Altitude Checker sells 1 one-off in-app purchase and Tranthru sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Altitude Checker ships an update every 4 months, Tranthru every 2 months. The most recent releases landed on October 23, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Altitude Checker | Tranthru |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/altitude-checker/id635168846/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | **82.4% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 282 MB | 8 MB |
| Requires iOS | 15.0 | **7.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Takafumi AMANO](https://appshunter.io/developer/581065340) | [Toraiwax](https://appshunter.io/developer/380354580) |

## What reviewers say

### Altitude Checker

[App page](https://appshunter.io/ios/app/altitude-checker/id635168846)

Measure altitude using your device's location or by selecting points on a map. Offers various measurement modes and customizable settings for units, datums, and coordinate systems. Includes an option to display addresses or coordinates.

**Highlights:** Map Measurement Mode, GNSS Mode, Digital Elevation Model (DEM) data, Unit selection (Meter/Foot), Special Datum options, Coordinate System selection, Address/Coordinate display

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Tranthru

[App page](https://appshunter.io/ios/app/tranthru-a-translucent-webbrowser/id685762084)

This app overlays a camera feed onto your browser, allowing for safer browsing, especially when on the move. It aims to reduce the risks associated with using a device while walking.

**Highlights:** Camera overlay on browser, Safer browsing while moving, Reduced distraction risk, Texting while walking safety aid

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stop Ads | $0.99 | one-time |
| Unlimited Bookmark | $0.99 | one-time |
| Customizable Quickmenu | $0.99 | one-time |


## Frequently asked questions

### Is Altitude Checker free?

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

### Is Tranthru free?

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

### Do Altitude Checker or Tranthru have ads?

Altitude Checker shows ads; Tranthru does not.

### Which is updated more often, Altitude Checker or Tranthru?

Altitude Checker ships an update every 4 months, and Tranthru every 2 months. Most recently, Altitude Checker was updated on October 23, 2026 and Tranthru on October 5, 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.*