Arcus Solis - Solar Path
Simply the Sun azimuth, altitude with solar noon, rise and set times.
- • Sun path visualisation
- • Azimuth + altitude
- • Sunrise/sunset azimuths
Practical outdoor navigation tools designed specifically for Apple Watch.
Built for clarity, accuracy and ease of use in the field.
Available now
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Arcus Lunae - Moon Path
Moonrise/set, phase, illumination, and the Moon’s track across the sky.
- • Altitude and azimuth
- • Phase + illumination
- • Rise/set + timing
Magnetic Variation
Displays World Magnetic Model declination to convert between true and magnetic bearings.
- • Offline-ready model
- • Declination at location
- • True ↔︎ magnetic guidance
Solar Noon
Calculates your Local Solar Noon time.
- • Max altitude of Sun
- • Longitude
- • Find your latitude
Sun Azimuths
Create a table of Sun azimuths for each hour before and after Local Solar Noon.
- • Sun azimuths
- • Gatty
- • Completely offline
Moon Calendar
All the phases of the Moon worldwide.
- • Moon
- • Global
- • Phases
In development
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Night Nav
Learn key stars and use heading-based suggestions for night navigation.
- • Star shortlist by heading
- • Alt/az guidance
- • Simple learning flow
Sol et Luna
All the sun and moon data to aid your directional awareness outdoors.
- • Sun + Moon
- • Azimuth + altitude
- • All their Key events