Prism Tape Calculator
Live tape. No ads. Exact math.
About
This app provides a calculator with a paper tape feature, displaying each calculation line above the keys. It offers live result previews, the ability to reuse previous results, and handles complex math with precision. It is designed for privacy with no ads or tracking.
What's New in Prism Tape Calculator
1.0
September 1, 2026
Developer apps
FAQ
What is Prism Tape Calculator?
Prism Tape Calculator is a calculator app that features a persistent paper tape. This tape displays every calculation as you enter it, allowing you to easily review past entries and reuse previous results. It aims to provide exact math without ads or tracking.
Does Prism Tape Calculator have ads?
No, Prism Tape Calculator is completely ad-free. The developers explicitly state 'No ads. Ever.' and emphasize that no third-party code or tracking is used, ensuring a private user experience.
How does the paper tape feature work in Prism Tape Calculator?
The paper tape shows each calculation line above the keys, similar to an adding machine. You can scroll through the full tape, tap any earlier result to use it in a new calculation, or swipe to delete lines. The tape is stored on your device.
Is Prism Tape Calculator suitable for financial calculations?
Yes, Prism Tape Calculator uses decimal arithmetic for exact math, meaning 0.1 + 0.2 equals 0.3 precisely. This avoids floating-point surprises, making it ideal for money math and other sensitive calculations.
What scientific functions are available in Prism Tape Calculator?
When in scientific mode (or landscape orientation), Prism Tape Calculator offers parentheses, powers, roots, trigonometric functions (sin, cos, tan), logarithms (ln, log), factorial, pi, and e. It also supports degrees or radians.
Can I use Prism Tape Calculator offline?
Yes, Prism Tape Calculator works completely offline. The app is designed to be lightweight, opening instantly and requiring no internet connection for its core functionality.
What devices is Prism Tape Calculator available on?
Based on the provided data, Prism Tape Calculator is currently supported on iPhone. It is designed with features like VoiceOver and Dynamic Type support for accessibility.
How often is Prism Tape Calculator updated?
Prism Tape Calculator was last updated on September 1, 2026, with version 1.0. This indicates it is a new release, and further updates will likely follow based on user feedback and development plans.