# Altitude Compass vs Wadokei57 Astronomical clock

The clearest difference is price: Altitude Compass at Free against Wadokei57 Astronomical clock's $3.99. Wadokei57 Astronomical clock's advantage is in-app purchases (none vs 2). On review sentiment, update cadence, ads and device support there is nothing between them.

Altitude Compass is free to download; Wadokei57 Astronomical clock costs $3.99 up front. Altitude Compass sells 2 one-off in-app purchases. Wadokei57 Astronomical clock asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on November 12, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Altitude Compass | Wadokei57 Astronomical clock |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (17 ratings)](https://appshunter.io/ios/app/altitude-compass/id1642364007/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 95.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 3 MB | 4 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [锦滔 欧](https://appshunter.io/developer/1524196172) | [Shinichi Sekiguchi](https://appshunter.io/developer/1509262945) |

## What reviewers say

### Altitude Compass

[App page](https://appshunter.io/ios/app/altitude-compass/id1642364007)

This app provides real-time altitude, pressure, and location data for outdoor activities. It offers customizable compass dials and display themes, with an optional full version for enhanced photo watermarking and personalization.

**Highlights:** Real-time altitude and pressure readings, GPS coordinates and nearby addresses, Customizable compass dials and themes, Home Screen, Lock Screen, and StandBy widgets, Watermark camera for photos, Photo information preservation, Customizable watermark content

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-day Trial | Free | one-time |
| Full Version Unlock | $0.99 | one-time |


### Wadokei57 Astronomical clock

[App page](https://appshunter.io/ios/app/wadokei57-astronomical-clock/id6748839654)

This app combines a traditional Japanese clock based on sunrise and sunset with a miniature planetarium. It displays celestial movements, moon phases, and seasonal changes, all optimized for Apple Watch.

**Highlights:** Traditional Japanese time system, Miniature planetarium with star simulation, Moon phase and seasonal displays, Complications for Moon, Sun, Venus, Time navigation via crown rotation, Offline operation

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Altitude Compass free?

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

### Is Wadokei57 Astronomical clock free?

Wadokei57 Astronomical clock costs $3.99, with no in-app purchases.

### Do Altitude Compass or Wadokei57 Astronomical clock have ads?

Neither Altitude Compass nor Wadokei57 Astronomical clock shows ads.

### Which is updated more often, Altitude Compass or Wadokei57 Astronomical clock?

Altitude Compass ships an update every 5 days, and Wadokei57 Astronomical clock every 5 days. Most recently, Altitude Compass was updated on November 12, 2026 and Wadokei57 Astronomical clock on November 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.*