
Delta Calc
A fast percent change calc
$1.99 · Designed for iPad
A fast, easy, and fun-to-use percent change calculator. Now you can quickly calculate discounts, financial gains, and percent changes without having to use Excel, Google, or do the long math.
Delta Calc can solve for any of the three values within the percent change formula. It solves for the a, b, or c value in the percent change formula ((b - a) / a) * 100 = c.
Other features include:
- Haptic feedback (can be disabled if desired)
- Change the number of decimal places displayed in the result (from 0 to 10)
- Fun animation when tapping the swap button (warning: could become addictive)
- Delightful to tap number pad buttons
- Enable and disable keyboard buttons
Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy: https://deltacalc.app/privacy
Support: https://deltacalc.app/support
Ratings & Reviews
This update includes minor improvements and bug fixes.
The developer, Stephen Coffey, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Stephen Coffey
- Size
- 1.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2025 Stephen Coffey
