# Altitude Compass vs Ornn闹钟

The clearest difference is monetization model: Ornn闹钟 at freemium against Altitude Compass's paid. Altitude Compass's advantage is iOS requirement (15.0 vs 26.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Altitude Compass sells 2 one-off in-app purchases and Ornn闹钟 sells 4 in-app purchases, starting at $0.99 per 3 months. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Altitude Compass against 5.0 for Ornn闹钟. Both are backed by a comparable volume of ratings — 16 and 10 respectively. Written reviews are what separate them: 95% of Altitude Compass's written reviews are positive against 100% of Ornn闹钟's.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on September 27, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Altitude Compass | Ornn闹钟 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (16 ratings)](https://appshunter.io/ios/app/altitude-compass/id1642364007/reviews) | [5.0 (10 ratings)](https://appshunter.io/ios/app/ornn/id6762169145/reviews) |
| Number of ratings | **16** | 10 |
| Positive reviews | 95.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Paid | **Freemium** |
| Size | 3 MB | 43 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [锦滔 欧](https://appshunter.io/developer/1524196172) | [单 王](https://appshunter.io/developer/1893210700) |

## What reviewers say

### Altitude Compass

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

This tool provides real-time altitude, atmospheric pressure, and location data. It includes a camera with environmental watermarks, a level gauge, speedometer, and sunrise/sunset calculations. Customize the interface and view data via widgets.

**Highlights:** Switchable altitude data sources (GPS/altimeter), Real-time camera with environmental data watermarks, Level gauge, speedometer, sunrise/sunset calculator, Customizable UI with dark/light modes, Widget support for home and lock screens, Ad-free and privacy-focused design

**Features:** Vision Pro support

**In-app purchases (2)**

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


### Ornn闹钟

[App page](https://appshunter.io/ios/app/ornn/id6762169145)

This smart alarm clock is designed for Chinese work schedules, automatically adjusting for holidays and offering flexible repeat options like alternating weeks or shift work. It allows custom ringtones and snooze durations, with clear management of multiple alarms.

**Highlights:** Automatic holiday adjustments, Flexible repeat rules (alternating weeks, shifts), Customizable ringtones, Snooze with countdown display, Multi-alarm management, Shift work scheduling

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 季会员 | $0.99 | per 3 months |
| 月会员 | $0.99 | per month |
| 年会员 | $2.99 | per year |
| 永久会员 | $4.99 | one-time |


## Frequently asked questions

### Is Altitude Compass free?

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

### Is Ornn闹钟 free?

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

### Which has better reviews, Altitude Compass or Ornn闹钟?

Altitude Compass and Ornn闹钟 are both rated 5.0 out of 5 on the App Store, from 16 and 10 ratings respectively.

### Do Altitude Compass or Ornn闹钟 have ads?

Neither Altitude Compass nor Ornn闹钟 shows ads.

### Which is updated more often, Altitude Compass or Ornn闹钟?

Altitude Compass ships an update every 5 days, and Ornn闹钟 every 5 days. Most recently, Altitude Compass was updated on September 27, 2026 and Ornn闹钟 on September 15, 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.*