Compass Altimeter: Sun & Moon

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