Sundial Builder
by Pietro Massimino
· Education
· $4.99
On the App Store since July 2025
· Data updated
Sundial Builder is made and published by Pietro Massimino. AppBrain is an independent app data site and isn't affiliated with Pietro Massimino. The app name, icon, screenshots and description belong to Pietro Massimino and are shown as published on the App Store.
AppBrain's verdict
- Last updated
- April 4, 2026
Rankings
App Store top chartsApp Store Rankings for Sundial Builder
This app is not ranked
Competitors
Similar apps and more from Pietro MassiminoMore from Pietro Massimino
Releases
Updates seen on the App Store- Version
- 1.5
- Launched
- July 2025
No changelog data
User feedback
Ratings and reviews on the App StoreComments on Sundial Builder for iOS
We don't have enough comments to show example comments. Please check back later.
Technology
Found in the app by AppBrain- Price
- $4.99
- App size
- 12.6 MB
- Content rating
- Everyone
Technologies used by Sundial Builder
About the app and developer
About Sundial Builder
Sundial Builder is an education app developed by Pietro Massimino.
User Ratings
The app has no ratings yet.
App Information
Sundial Builder costs $4.99. The app size is 12.64 MB. The latest version available is 1.5. The last update was on April 4, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since July 2025.
Developer information for Pietro Massimino
Address:
Store listing
By Pietro Massimino, from the App Store
Screenshots by Pietro Massimino, from the the App Store listing
Description by Pietro Massimino Written by the developer, not by AppBrain. Click to read.
HORIZONTAL SUNDIAL
Built on a flat horizontal surface.
- Hour lines converge toward true south in the northern hemisphere, or true north in the southern hemisphere.
- The gnomon is fixed at the "center of the sundial," where the hour lines meet,
is tilted relative to the horizontal plane by an angle equal to the absolute value of the local latitude,
it must point to the celestial north pole (northern hemisphere) or celestial south pole (southern hemisphere).
Required data:
- Latitude between 5° and 80° (use negative values for southern hemisphere)
- Longitude (used only to calculate correction between solar time and civil time)
- Location can be entered manually or retrieved via the device's GPS
- Gnomon length: between 10 cm and 30 cm. The final tilted length is calculated by the app
- Equation of Time and longitude correction are shown on screen and in the CSV file
---
VERTICAL SUNDIAL
Built on a vertical wall facing any direction (south, west, east, north, or intermediate).
- Hour lines start from the "center of the sundial" and extend downward
- The gnomon is fixed at this center point
- The gnomon is inclined based on latitude and wall orientation. It equals the latitude only when facing due south or due north
- The gnomon must point to the celestial north pole (northern hemisphere) or celestial south pole (southern hemisphere)
Required data:
- Latitude between 5° and 80° (use negative values for southern hemisphere)
- Longitude (used only for time correction)
- Location can be entered manually or via GPS
- Gnomon length: between 10 cm and 30 cm. The app computes the final inclined length
- Wall orientation:
- Northern hemisphere: from 270° (east) to 360°≡0° (south) to 90° (west)
- Southern hemisphere: from 270° (east) to 180° (north) to 90° (west).
---
GENERAL NOTES
- The scale factor changes the sundial’s visual size but not the CSV values
- Sundials near the edge of a time zone may show up to 30 minutes of difference between solar time and civil time
- The app calculates the inclined gnomon length from the center
- Alternatively, you can place a perpendicular gnomon from the origin point; in this case, only the tip’s shadow indicates the time
- Wall orientation is measured clockwise from south:
- 0° = South
- 90° = West
- 180° = North
- 270° = East
Built on a flat horizontal surface.
- Hour lines converge toward true south in the northern hemisphere, or true north in the southern hemisphere.
- The gnomon is fixed at the "center of the sundial," where the hour lines meet,
is tilted relative to the horizontal plane by an angle equal to the absolute value of the local latitude,
it must point to the celestial north pole (northern hemisphere) or celestial south pole (southern hemisphere).
Required data:
- Latitude between 5° and 80° (use negative values for southern hemisphere)
- Longitude (used only to calculate correction between solar time and civil time)
- Location can be entered manually or retrieved via the device's GPS
- Gnomon length: between 10 cm and 30 cm. The final tilted length is calculated by the app
- Equation of Time and longitude correction are shown on screen and in the CSV file
---
VERTICAL SUNDIAL
Built on a vertical wall facing any direction (south, west, east, north, or intermediate).
- Hour lines start from the "center of the sundial" and extend downward
- The gnomon is fixed at this center point
- The gnomon is inclined based on latitude and wall orientation. It equals the latitude only when facing due south or due north
- The gnomon must point to the celestial north pole (northern hemisphere) or celestial south pole (southern hemisphere)
Required data:
- Latitude between 5° and 80° (use negative values for southern hemisphere)
- Longitude (used only for time correction)
- Location can be entered manually or via GPS
- Gnomon length: between 10 cm and 30 cm. The app computes the final inclined length
- Wall orientation:
- Northern hemisphere: from 270° (east) to 360°≡0° (south) to 90° (west)
- Southern hemisphere: from 270° (east) to 180° (north) to 90° (west).
---
GENERAL NOTES
- The scale factor changes the sundial’s visual size but not the CSV values
- Sundials near the edge of a time zone may show up to 30 minutes of difference between solar time and civil time
- The app calculates the inclined gnomon length from the center
- Alternatively, you can place a perpendicular gnomon from the origin point; in this case, only the tip’s shadow indicates the time
- Wall orientation is measured clockwise from south:
- 0° = South
- 90° = West
- 180° = North
- 270° = East