This app offers a modern graphing calculator experience on your iPhone. It features fast, interactive touch-screen graphing, scrollable windows, and intelligent error messages for a more intuitive user experience. Designed to be a usable alternative to physical graphing calculators.
Summarized from real user reviews of Calculate84. Based on 53K reviews and a 4.8/5 average, it highlights the 7 positives and 5 negatives reviewers mention most about this Education app.
3.0.4
August 31, 2026
Improved equation history and result formatting, more reliable Pro purchases, better accessibility, and fixes for math input and stability.
Speed up your workflow with Pro!
4 issues
Crashes when using 2-sample T/Z interval functions
Incorrect results for inverse trig functions
5 requests
Add TVM solver functionality
Implement more regression types
Calculate84 provides a modern graphing calculator experience directly on your iPhone. It aims to replicate the functionality of physical graphing calculators with a user-friendly interface, featuring fast touch-screen graphing and scrollable windows.
Key features include fast and interactive touch-screen graphing, scrollable windows for easier navigation, and intelligent error messages to help users understand and correct mistakes. The interface is designed to be intuitive and familiar.
The app is available for free, but it does include in-app purchases and advertisements. This allows users to try the core functionality before deciding to invest further.
This application is designed for use on iPhones, offering a portable and accessible graphing calculator solution. It is intended to be a modern alternative to traditional physical calculators.
Students, educators, and anyone who regularly uses a graphing calculator for math, science, or engineering tasks would benefit. It's particularly useful for those who prefer a digital interface or are accustomed to TI-84 calculators.
