# Altitude Checker vs しずちょく

The clearest difference is in-app purchases: しずちょく at none against Altitude Checker's 1. しずちょく also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 4 months). Altitude Checker's advantage is device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. Altitude Checker sells 1 one-off in-app purchase. しずちょく asks for nothing beyond the download.

Altitude Checker ships an update every 4 months, しずちょく every 5 weeks. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Altitude Checker | しずちょく |
| --- | --- | --- |
| 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 | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 282 MB | 71 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Takafumi AMANO](https://appshunter.io/developer/581065340) | [takahiko abe](https://appshunter.io/developer/1712458670) |

## 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 |


### しずちょく

[App page](https://appshunter.io/ios/app/id6498550650)

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

**In-app purchases:** none


## Frequently asked questions

### Is Altitude Checker free?

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

### Is しずちょく free?

しずちょく is free to download, with no in-app purchases.

### Do Altitude Checker or しずちょく have ads?

Altitude Checker shows ads; しずちょく does not.

### Which is updated more often, Altitude Checker or しずちょく?

Altitude Checker ships an update every 4 months, and しずちょく every 5 weeks. Most recently, Altitude Checker was updated on October 12, 2026 and しずちょく on October 3, 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.*