SurveyNotes vs SunArc

SurveyNotes is a professional differential leveling tool built for surveyors, engineers, and contractors who need a reliable field book in their pocket. Set up your instrument in seconds. Enter your benchmark elevation and backsight rod reading and SurveyNotes instantly calculates your Height of Instrument. From there, enter any desired elevation and get the exact rod reading you need to hit grade. FIELD BOOK RECORDING Every shot you record is saved to a session-based field book — organized by instrument setup, exactly the way a real level book works. Each session stores your benchmark, backsight, HI, and every foresight shot with notes and timestamps. PROFESSIONAL PDF EXPORT Export any session as a clean, print-ready PDF formatted like a traditional differential leveling field book. Share it by email or AirDrop directly from the app. BUILT FOR THE FIELD • Works completely offline — no account, no internet required • Dark mode interface easy on the eyes in all lighting conditions • Custom measurement keyboard supporting decimal feet, feet-inches, and fractions to the nearest 1/16" • Sessions are saved automatically and available across app launches SURVEYING TERMINOLOGY SurveyNotes uses standard differential leveling terminology — Benchmark (BM), Backsight (BS), Height of Instrument (HI), and Foresight (FS) — so it fits naturally into any professional workflow. All data is stored locally on your device and never transmitted anywhere.

SunArc shows the sun’s path and position on a map for your location, date and time. See where shadows will fall, from buildings, trees or custom objects placed manually. Check how shadows change throughout the day and across different seasons. Will your solar panels still get enough sun in winter? Will that tree block the afternoon sun from your kitchen window? Or when will your terrace finally be in the shade? Useful for photographers, hikers, home buyers, balcony owners, campers, gardeners, beach lovers, future solar power heroes and vitamin D hunters. One purpose. No account. No ads. No subscription.