Rule of Proportion
Rule of Proportion Summary
Rule of Proportion is a with in-app purchases iOS app in Education by Glindemann, Sennoun, Langer GbR. Released in Feb 2020 (6 years ago). It has 20 ratings with a 4.35★ (good) average. Based on AppGoblin estimates, it reaches roughly 23 monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Feb 18, 2026.
Store info: Last updated on App Store on Feb 18, 2026 .
4.35★
Ratings: 20
Screenshots
App Description
Proportions are no problem anymore. For this, only 3 of 4 variables must be entered. All calculations are stored in the history. The final solution can be shared.
[ Content ]
- the variables must be entered
- calculation with the rule of proportion
- history function that saves input
- detailed solution
- the entering of fractions and decimals is supported
- constants can be entered
- option to remove ads
[ Usage ]
- there are 4 fields for entering the values using a modified keyboard
- if you have entered wrong values or values are missing, the text fields are highlighted
- you can switch between the solution, input view and history by swiping and / or touching the buttons
- the entries in the history can be deleted or sorted manually
- if you select an entry in the history, it will be loaded automatically for the calculation
- the entire history can be deleted by pressing a key