Calculator users re-enter values across modes and input methods
People doing calculations on computers can lose entered values when switching calculator modes, and pen-first users find mouse-style input cumbersome for long expressions. Typing long numbers can also feel tedious, while handwriting recognition may be unreliable for complex math. The requests point to input friction rather than a lack of calculator features, but they come from a small set of mostly older signals.
For people entering long calculations on computers. Mentioned from Feb 2019 to Mar 2026 on Bluesky, GitHub and Hacker News.
5 different people described this problem in 4 separate discussions.
- Indie fit
- 2.0/10
- Pain
- 4.3/10
- Frequency
- 6.5/10
- Willingness to pay
- 0.0/10
- Momentum
- 5.0/10
- Who pays
- Consumers
- Competition
- High
- Build difficulty
- Medium
What people said
Quoted word for word. Follow a link to read the whole discussion.
Often I need to use functions from both programmer and scientific modes in the same calculation, but if I switch modes it loses my input
This is less than ideal when trying to input long numbers in a device where pen is one of the primaty input methods (e.g. Surface Studio in canvas mode, Surface Go with no keyboard attached), where many users would find easier to just write down the numbers
Build brief
See what to build and who will buy it
- 2 product ideas with the smallest useful version and pricing
- 4 places to find your first customers
- 4 more quotes from people who have this problem
- Current workarounds, existing solutions and risks