A simple, nostalgic seven-segment calculator
For questions, requests, or bug reports, please email us at the address below. We read every message and will do our best to help.
Please note that replies may take some time.
Q. The display shows “Error.”
This appears when you divide by zero, or when a result exceeds the 12 digits the display can hold. Press the “C” key to start over.
Q. Does the app use the internet or collect any data?
No. Retro Calc never connects to the internet, and it collects no personal information or usage data of any kind. See the
Privacy Policy for details.
Q. Are there scientific functions or a calculation history?
No. Retro Calc focuses on the four basic operations. Leaving other features out is deliberate — it keeps the app immediate and easy to use.
Q. Does the app cost anything?
No. Retro Calc is free, and it shows no ads.
iPhone running iOS 17.0 or later