---
title: "Rule of Three - Calculator - Reviews, Revenue and Downloads in Czechia | Apple App Store"
description: "Simple calculator for the Rule of Three. Supports for both direct proportion and indirect proportion mode.  Accessibility should be an important part of every application. Rule of Three Calculator is "
---

# Rule of Three - Calculator — Czechia
> Simple Rule of 3 calculator

![Rule of Three App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple124/v4/94/3c/b6/943cb60b-153c-0506-0371-bca928baa6c3/AppIcon-0-1x_U007emarketing-0-7-0-85-220.png/400x400bb.png)

**Developer:** [Tomas Parizek](https://apptail.io/developer/tomas-parizek-anjb) (United States)
**Category:** Utilities
**Rating:** 5.0/5 (4 ratings)
**Price:** Free
**Bundle ID:** com.tomasparizek.RuleOfThree
**Store:** Apple App Store
**Country:** Czechia
**Version:** 1.1.3 (released 2020-09-17)
**Original Release:** 2019-12-04

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/cz/app/app/id1489858521)
**AppTail Page:** [https://apptail.io/app/rule-of-three-calculator-Rhee/czechia](https://apptail.io/app/rule-of-three-calculator-Rhee/czechia)

## Rule of Three Description
Simple calculator for the Rule of Three. Supports for both direct proportion and indirect proportion mode.

Accessibility should be an important part of every application. Rule of Three Calculator is tested and optimized for use via VoiceOver and other accessibility features.

If you have any issue with the app or you have a suggestion for an improvement, do not hesitate to contact me via email: rule_off_three@tomasparizek.com

## Rule of Three Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/25/f7/59/25f75924-1fec-da73-ec87-f233b003d4d2/pr_source.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/b6/9a/35/b69a35f0-a88b-5bc4-3ceb-3aefa84848f7/pr_source.png/1242x2688.png)

## Rule of Three Rating Breakdown in Czechia
- 5 stars: 4 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)


## Rule of Three In-App Purchases
| Item | Price |
|------|-------|
| Remove ads | 49.00 č |



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## Rule of Three Available In
- [Czechia](https://apptail.io/app/rule-of-three-calculator-Rhee/czechia)
- [Slovakia](https://apptail.io/app/rule-of-three-calculator-Rhee/slovakia)
- [Austria](https://apptail.io/app/rule-of-three-calculator-Rhee/austria)
- [Azerbaijan](https://apptail.io/app/rule-of-three-calculator-Rhee/azerbaijan)
- [Brunei](https://apptail.io/app/rule-of-three-calculator-Rhee/brunei)
- [Brazil](https://apptail.io/app/rule-of-three-calculator-Rhee/brazil)
- [Belarus](https://apptail.io/app/rule-of-three-calculator-Rhee/belarus)
- [Canada](https://apptail.io/app/rule-of-three-calculator-Rhee/canada)
- [Switzerland](https://apptail.io/app/rule-of-three-calculator-Rhee/switzerland)
- [Chile](https://apptail.io/app/rule-of-three-calculator-Rhee/chile)
- [China](https://apptail.io/app/rule-of-three-calculator-Rhee/china)
- [Colombia](https://apptail.io/app/rule-of-three-calculator-Rhee/colombia)
- [Germany](https://apptail.io/app/rule-of-three-calculator-Rhee/germany)
- [Denmark](https://apptail.io/app/rule-of-three-calculator-Rhee/denmark)
- [Dominican Republic](https://apptail.io/app/rule-of-three-calculator-Rhee/dominican-republic)
- [Ecuador](https://apptail.io/app/rule-of-three-calculator-Rhee/ecuador)
- [Egypt](https://apptail.io/app/rule-of-three-calculator-Rhee/egypt)
- [Spain](https://apptail.io/app/rule-of-three-calculator-Rhee/spain)
- [France](https://apptail.io/app/rule-of-three-calculator-Rhee/france)
- [Greece](https://apptail.io/app/rule-of-three-calculator-Rhee/greece)
- [Hong Kong SAR China](https://apptail.io/app/rule-of-three-calculator-Rhee/hong-kong)
- [Honduras](https://apptail.io/app/rule-of-three-calculator-Rhee/honduras)
- [Hungary](https://apptail.io/app/rule-of-three-calculator-Rhee/hungary)
- [Indonesia](https://apptail.io/app/rule-of-three-calculator-Rhee/indonesia)
- [Ireland](https://apptail.io/app/rule-of-three-calculator-Rhee/ireland)
- [India](https://apptail.io/app/rule-of-three-calculator-Rhee/india)
- [Italy](https://apptail.io/app/rule-of-three-calculator-Rhee/italy)
- [Japan](https://apptail.io/app/rule-of-three-calculator-Rhee/japan)
- [South Korea](https://apptail.io/app/rule-of-three-calculator-Rhee/south-korea)
- [Kuwait](https://apptail.io/app/rule-of-three-calculator-Rhee/kuwait)
- [Kazakhstan](https://apptail.io/app/rule-of-three-calculator-Rhee/kazakhstan)
- [Lebanon](https://apptail.io/app/rule-of-three-calculator-Rhee/lebanon)
- [Mexico](https://apptail.io/app/rule-of-three-calculator-Rhee/mexico)
- [Nigeria](https://apptail.io/app/rule-of-three-calculator-Rhee/nigeria)
- [Netherlands](https://apptail.io/app/rule-of-three-calculator-Rhee/netherlands)
- [New Zealand](https://apptail.io/app/rule-of-three-calculator-Rhee/new-zealand)
- [Panama](https://apptail.io/app/rule-of-three-calculator-Rhee/panama)
- [Peru](https://apptail.io/app/rule-of-three-calculator-Rhee/peru)
- [Philippines](https://apptail.io/app/rule-of-three-calculator-Rhee/philippines)
- [Pakistan](https://apptail.io/app/rule-of-three-calculator-Rhee/pakistan)
- [Poland](https://apptail.io/app/rule-of-three-calculator-Rhee/poland)
- [Portugal](https://apptail.io/app/rule-of-three-calculator-Rhee/portugal)
- [Paraguay](https://apptail.io/app/rule-of-three-calculator-Rhee/paraguay)
- [Romania](https://apptail.io/app/rule-of-three-calculator-Rhee/romania)
- [Saudi Arabia](https://apptail.io/app/rule-of-three-calculator-Rhee/saudi-arabia)
- [Sweden](https://apptail.io/app/rule-of-three-calculator-Rhee/sweden)
- [Thailand](https://apptail.io/app/rule-of-three-calculator-Rhee/thailand)
- [Türkiye](https://apptail.io/app/rule-of-three-calculator-Rhee/turkey)
- [Ukraine](https://apptail.io/app/rule-of-three-calculator-Rhee/ukraine)
- [United States](https://apptail.io/app/rule-of-three-calculator-Rhee/united-states)
- [South Africa](https://apptail.io/app/rule-of-three-calculator-Rhee/south-africa)
- [Argentina](https://apptail.io/app/rule-of-three-calculator-Rhee/argentina)
- [United Arab Emirates](https://apptail.io/app/rule-of-three-calculator-Rhee/united-arab-emirates)
- [Vietnam](https://apptail.io/app/rule-of-three-calculator-Rhee/vietnam)
- [Venezuela](https://apptail.io/app/rule-of-three-calculator-Rhee/venezuela)

---

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