# Compass Altimeter: Sun & Moon — GPS Elevation & Barometer

> Pro-grade altitude, compass, and sun/moon tracker for outdoor enthusiasts. (iPhone/iPad app by Fuzhou Knock Dream Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/compass-altimeter-sun-and-moon/id6752685064 (this page in markdown: same URL + `.md`)
- Developer: [Fuzhou Knock Dream Technology Co., Ltd.](https://appshunter.io/developer/1478601598)
- Category: Navigation, Utilities
- Price: Free with in-app purchases
- Rating: 4.50/5 from 2 App Store ratings · 12 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 41 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2025-09-25
- Data updated: 2026-08-20
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/compass-altimeter-sun-and-moon/id6752685064/reviews.md

## What is Compass Altimeter?

Compass Altimeter is a clean, pro‑grade altitude and compass tool that fuses GPS with (iOS) barometer/absolute altitude for faster, more accurate live readings—ideal for hiking, exploration, landscape photography, and stargazing.

Key Features
• Live altitude: GPS + barometric fusion with accuracy readout
• Relative altitude: set a base point to track ascent/descent
• Compass: True/Magnetic North, localized direction text (NESW), subtle haptics
• Calibration & interference: magnetic interference detection with calibration tips
• Sun & Moon: elevation/azimuth, sunrise/sunset and moonrise/moonset
• Photography aide: golden/blue hour with bearings for better framing
• Coordinates: switch between Decimal and DMS; one‑tap copy
• Sources & accuracy: Auto/GPS/Barometric modes; GPS High/Medium/Low accuracy
• Pressure: live pressure with units (hPa/mmHg/inHg/psi)
• Personalization: m/ft, 12/24‑hour, language, precision display, splash animation

Design & Performance
• Large, legible typography with modern UI
• “Fast‑then‑precise” positioning and smart lifecycle for stability and battery savings

Use Cases
• Hiking and outdoor exploration
• Landscape photography timing (golden/blue hour)
• Astronomy and education
• Travel logging and altitude lookup

Privacy & Permissions
• Location while in use only; used for altitude and sun/moon calculations (no continuous background tracking)
• Motion/Barometer (iOS) improves altitude accuracy
• Preferences stored on device; no personal data uploaded

Disclaimer
• Measurements depend on environment/device and are for reference only

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Compass Altimeter Subscription Service Introduction:  
【Premium Membership Features】  
- Red light eye protection display for night use
- Display measurement precision information 
- Display environmental magnetic field data in real-time 
- New restricted features to be added in the future  

Subscription Options:  
- Monthly: $1.99/month  
- Yearly: $9.99/month (billed annually)  
- Lifetime: one-time purchase $19.99  

- Payment: Once the user confirms the purchase, the charge will be made to the iTunes account.  
- Cancellation: To cancel the subscription, please manually turn off auto-renewal at least 24 hours before the current subscription period ends in 【Settings】 → 【Apple ID, iCloud, iTunes & App Store】 → 【Subscriptions】.  
- Renewal: The iTunes account will be charged within 24 hours before expiration. After a successful charge, the subscription period will be extended according to the chosen plan.  
- Privacy Policy: https://laysky.com/en/compass-privacypolicy.html  
- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/  
- User Agreement: https://laysky.com/en/subscription-compass.html  
- Paid Membership Service Agreement: https://laysky.com/en/subscription-compass.html  

For client usage issues, please contact twtams@163.com for support.

## Key features

- Live altitude with GPS and barometer fusion
- Relative altitude tracking for ascent/descent
- True/Magnetic North compass with haptics
- Sun and moon elevation, azimuth, rise/set times
- Golden/blue hour timing for photography
- Coordinate display with one-tap copy
- Pressure readings in various units

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Compass Altimeter Pro Annual | $9.99 | per year |
| Compass Altimeter Pro Monthly | $1.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Compass Altimeter Pro Lifetime | $19.99 | one-time |


## Recent user reviews (10 of 12)

All indexed reviews: https://appshunter.io/ios/app/compass-altimeter-sun-and-moon/id6752685064/reviews.md

### 5/5 — good

*2026-08-14*

excellent

### 3/5 — 我

*2026-07-31*

相机权限无法打开

**Developer response:** 请尝试以下步骤：1）前往系统设置 → 隐私与安全 → 相机，确保已授权；2）如果之前拒绝过，需要先卸载重装应用；3）检查是否有屏幕使用时间限制。如仍有问题请联系我们！

### 5/5 — 值得拥有的精品app

*2026-06-19*

老A的精品，功能强大实用，精细，精确。

### 5/5 — 很好用

*2026-03-02*

界面美观简洁，好用

**Developer response:** 界面美观简洁，好用！谢谢认可！

### 3/5 — 我

*2026-01-19*

相机权限无法打开

**Developer response:** 请尝试以下步骤：1）前往系统设置 → 隐私与安全 → 相机，确保已授权；2）如果之前拒绝过，需要先卸载重装应用；3）检查是否有屏幕使用时间限制。如仍有问题请联系我们！

### 5/5 — 太棒了

*2025-11-05*

功能丰富，UI美观，终于找到一个满意的海拔指南针app了！

**Developer response:** 终于找到满意的了！这个评价让我很开心！

### 4/5 — 指南针不会动

*2025-10-22*

今天刚装的，手机上指南针不会动，iPad能动

**Developer response:** 感谢反馈！请检查：1）是否授予了指南针/运动与健身权限；2）尝试在设置中重置位置与隐私；3）确认手机陀螺仪功能正常。如仍有问题请联系我们，感谢！

### 5/5 — 匠心打造，值得推荐

*2025-10-09*

赞

**Developer response:** 匠心打造！谢谢！

### 5/5 — 简单明了

*2025-10-07*

界面清晰

**Developer response:** 界面清晰，简单好用！

### 5/5 — 天文爱好者最佳指南针

*2025-10-03*

真正实现了真北极指向，倾角显示，简易户外对极轴搞定了。作者一定是资深爱好者，没想到能有这么好的产品

**Developer response:** 真北极指向、倾角显示、户外对极轴——作为天文爱好者自己最需要的功能都做进去了！谢谢认可！

## Frequently asked questions about Compass Altimeter

### What is the Compass Altimeter subscription cost?

Compass Altimeter offers monthly ($1.99/month), yearly ($9.99/month billed annually), and lifetime ($19.99 one-time purchase) premium membership options. A 3-day free trial is available for the annual plan.

### How accurate is Compass Altimeter?

The app uses a fusion of GPS and iOS barometer for faster, more accurate live altitude readings. It also provides an accuracy readout and allows users to select between Auto, GPS, and Barometric modes for altitude measurement.

### Does Compass Altimeter have ads?

No, Compass Altimeter does not contain advertisements. The core functionality is free, with optional premium features available through a subscription.

### What devices does Compass Altimeter support?

Compass Altimeter is available for iPhone, iPad, and iPod touch devices. It requires iOS 13.0 or later.

### How do I cancel my Compass Altimeter subscription?

To cancel your subscription, navigate to Settings → Apple ID, iCloud, iTunes & App Store → Subscriptions and turn off auto-renewal at least 24 hours before your current subscription period ends.

### When was Compass Altimeter last updated?

The latest version of Compass Altimeter, 1.2.2, was last updated on May 26, 2026. The app was initially released on September 25, 2025.

### What are the premium features in Compass Altimeter?

Premium features include a red light eye protection display for night use, display of measurement precision information, and real-time environmental magnetic field data. More restricted features are planned for the future.

### Is Compass Altimeter suitable for children?

Yes, Compass Altimeter has an age rating of 4+, making it suitable for younger users. Its location permissions are limited to 'while in use' for essential calculations.

## Version history (last 5 releases)

### 1.5.1 — 2026-07-30

Compass readings are now more stable when you rotate or tilt your device. Barometric altitude that has not yet been calibrated by GPS is clearly marked as an estimate, so you can interpret the measurement with confidence. For the most accurate altitude, keep Location Services enabled and spend a moment outdoors with a clear view of the sky; calibration completes automatically when the GPS signal is good enough. We also refined sensor handling and overall reliability for smoother readings during hiking, travel, and everyday outdoor use.

### 1.5.0 — 2026-06-29

New in 1.5.0
• Tap the altitude to open Altitude details: effective oxygen, water boiling point, sea-level pressure, air density, and a 3-hour pressure trend chart.
• Optionally show effective oxygen right below the altitude reading.
• Fixed overlapping elements in landscape; cleaner layout.
• Faster, more reliable altitude and location, with better recovery after errors.

### 1.4.1 — 2026-06-24

What's new in 1.4.1
• Steadier altitude readings.
• New: choose coordinate system (WGS84 / GCJ-02) to match China maps.
• Clearer icons in red night mode.
• Home-screen widget altitude & time now follow your app settings.
• Stability improvements and fixes.

### 1.4.0 — 2026-06-20

What's new in 1.4.0
• More accurate altitude readings on Android.
• More accurate Sun & Moon times, positions, and golden/blue hour.
• AR sky now aligns with your phone's real camera view.
• Smoother on phones without a compass or barometer, with clearer guidance.
• More honest altitude accuracy, with a warning when it may have drifted.
• Refined, less obtrusive photo check-in watermark.
• Reorganized settings, plus fixes and polish.

### 1.3.0 — 2026-06-19

Version 1.3.0

• AR Live Sky — raise your phone to the sky to see the sun and moon paths, and find the Milky Way in augmented reality.
• Time Machine — scrub through time to preview the sun/moon position at any moment.
• Red Night Mode — a red-light display that protects your dark-adapted night vision while stargazing.
• Home Screen Widgets — golden hour, blue hour, moon phase and altitude at a glance.
• Altitude Check-In — capture a photo with an altitude and location watermark to log your summit.
• 15 new languages and a refreshed look throughout.

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## More apps by Fuzhou Knock Dream Technology Co., Ltd.

- [Stargazing Hub - Sky Live](https://appshunter.io/ios/app/stargazing-hub-sky-live/id1478601599)
- [Power VBT: Barbell 1RM](https://appshunter.io/ios/app/power-vbt-barbell-1rm/id1508179659)
- [Super Moon: Moon Phases](https://appshunter.io/ios/app/super-moon-moon-phases/id6739873430)

All apps by Fuzhou Knock Dream Technology Co., Ltd.: https://appshunter.io/developer/1478601598

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*