# RULE OF THREE \| NO ADS — Rule-of-three calculator

> A free, ad-free utility for solving rule-of-three proportion problems. (iPhone/iPad app by Andrew Carvajal.)

- Source: https://appshunter.io/ios/app/rule-of-three-no-ads/id6443475294 (this page in markdown: same URL + `.md`)
- Developer: [Andrew Carvajal](https://appshunter.io/developer/949216421)
- Category: Utilities, Productivity
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 0 MB
- Languages: English
- Released: 2022-09-22
- Data updated: 2026-07-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/rule-of-three-no-ads/id6443475294/reviews.md

## What is RULE OF THREE | NO ADS?

FREE | NO ADS | FOREVER

Simple rule-of-three calculator

A¹ + A² = B¹ + B²

## Key features

- Rule-of-three calculation
- Proportion problem solver
- Simple and intuitive interface
- Ad-free experience
- Completely free

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/rule-of-three-no-ads/id6443475294/reviews.md

### 5/5 — Brilliant app. Ad free. 😊

*2023-01-10, version 1.1*

Simplistic, easy to read ‘rule of three’ app without annoying adverts. Developer responded right away to a suggestion. Fab!

## Frequently asked questions about RULE OF THREE | NO ADS

### Does RULE OF THREE have ads?

No, RULE OF THREE is completely ad-free, as stated in its name and description. Users can enjoy an uninterrupted experience while performing calculations.

### What is the price of RULE OF THREE?

RULE OF THREE is available for free. There are no costs associated with downloading or using the app.

### What devices does RULE OF THREE support?

Currently, RULE OF THREE is supported on iPhone devices. Future updates may expand compatibility to other platforms.

### How often is RULE OF THREE updated?

The app was last updated on August 30, 2023, with version 1.2. This indicates a commitment to maintaining and improving the application.

### What is the age rating for RULE OF THREE?

RULE OF THREE has an age rating of 4+, making it suitable for a wide range of users, including younger individuals learning about proportions.

### What is the user sentiment for RULE OF THREE?

Based on the available data, RULE OF THREE has a perfect 5.0-star rating from 3 reviews, suggesting a very positive user reception.

### How does RULE OF THREE handle calculations?

RULE OF THREE specifically uses the rule-of-three method to solve proportion problems, allowing users to find an unknown value when three other values are known.

## Version history (last 3 releases)

### 1.2 — 2023-08-30

Thanks to Mark for reaching out with bugs and feedback!

FIXED:
- The "2.99" bug where the app would become unresponsive when typing 2.99
- Number text field padding not being tappable

UPDATED:
- Made tap areas wider and taller

### 1.1 — 2023-01-09

- Made the tappable areas larger.
- Made the answer show immediately once you've got enough numbers.

Thanks for the suggestions, Mark! I enjoyed your voicemail.

### 1.0.1 — 2022-09-22

No release notes.

## Apps similar to RULE OF THREE | NO ADS

| App | Rating | Price | Category |
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## More apps by Andrew Carvajal

- [Bored Games.](https://appshunter.io/ios/app/bored-games/id1644618221)

All apps by Andrew Carvajal: https://appshunter.io/developer/949216421

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-07.*