# Rule of 3 - Lite — The quick ratio calculator > Quick ratio calculator for product multiplication with clipboard and history features. (iPhone/iPad app by emmanuel orvain.) - Source: https://appshunter.io/ios/app/rule-of-3-lite/id1043084485 (this page in markdown: same URL + `.md`) - Developer: [emmanuel orvain](https://appshunter.io/developer/1025308595) - Category: Productivity, Utilities - Price: Free with in-app purchases - Rating: 4.80/5 from 21 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 21 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, Brazilian Portuguese, Chinese (Simplified, China), European Spanish - Released: 2015-10-16 - Data updated: 2026-08-26 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/rule-of-3-lite/id1043084485/reviews.md ## What is Rule of 3? THE most useful application to perform product multiplication(rule of 3). The result can be copied to the clipboard with a shortcut button. You can save a calculation and display it in your history (premium account) ## Key features - Product multiplication calculator - Quick ratio calculations - Clipboard shortcut - Save calculations - Calculation history ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Premium Access | $0.99 | one-time | ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/rule-of-3-lite/id1043084485/reviews.md ### 5/5 — Amazing *2023-03-06* Very useful. ### 5/5 — Excelente *2023-02-23* Excelente felicitaciones. ### 1/5 — Warum erlaubt Apple diese App??? *2021-04-15, version 3.3* Ich habe mir die Light Version runtergeladen und durch den Kauf von 1,09 € auf Pro upgedatet. Ich melde mich morgen telefonisch im App Store und möchte mein Geld zurück haben! Bin richtig wütend!Diese App ist wirklich eine Frechheit. ### 5/5 — Neat! *2021-01-30* A nice little* app which functions exactly as it should, without clutter or complication. *I like it; but I do wonder why it is almost 15MB. ### 1/5 — Neue Version und dann nur "update screenshots" *2016-10-15, version 2.1* Neue Version und dann nur "update screenshots" ### 5/5 — Efficace *2015-10-18* Enfin une application de produit en croix efficace. Merci ## Frequently asked questions about Rule of 3 ### What is Rule of 3 - Lite used for? Rule of 3 - Lite is designed to perform product multiplication, also known as the rule of three, which is a common method for solving proportion problems. ### Can I save my calculations in Rule of 3 - Lite? Yes, you can save your calculations and access them later through the calculation history feature. This functionality requires a premium account. ### How do I copy results from Rule of 3 - Lite? Rule of 3 - Lite offers a convenient shortcut button to copy the calculation result directly to your clipboard, allowing for easy pasting into other applications. ### What devices is Rule of 3 - Lite available on? Rule of 3 - Lite is available for iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users. ### What is the age rating for Rule of 3 - Lite? Rule of 3 - Lite has an age rating of 4+, indicating it is suitable for children and adults alike. ### How often is Rule of 3 - Lite updated? The latest version of Rule of 3 - Lite was released on February 27, 2023, suggesting regular updates to maintain functionality and compatibility. ### Does Rule of 3 - Lite have ads? No, Rule of 3 - Lite is ad-free, providing an uninterrupted user experience without advertisements. ### What is the user sentiment for Rule of 3 - Lite? Users have rated Rule of 3 - Lite highly, with an average of 4.8 stars from 20 ratings, indicating strong satisfaction with its performance and utility. ## Version history (last 5 releases) ### 3.9 — 2023-02-27 Improve stability ### 3.8 — 2022-08-24 Minor bug fixes ### 3.7 — 2021-11-08 - Improve performance ### 3.6 — 2021-10-31 - Improve User Interactions ### 3.5 — 2021-05-19 - Improve keyboard management ## Apps similar to Rule of 3 | App | Rating | Price | Category | | --- | --- | --- | --- | | [Best Proportion Calc](https://appshunter.io/ios/app/best-proportion-calc/id6474536406) | 5.0 (4) | Free | Productivity | | [Control Ganadero](https://appshunter.io/ios/app/control-ganadero/id664392203) | 4.3 (3) | Free | Productivity | | [Turnario - Turnos de trabajo](https://appshunter.io/ios/app/turnario-turnos-de-trabajo/id1460068714) | 5.0 (1) | Free | Productivity | | [Work Shift Calendar (Shifter)](https://appshunter.io/ios/app/work-shift-calendar-shifter/id1523513035) | 4.8 (2,384) | Free | Productivity | | [Quick and easy inventory](https://appshunter.io/ios/app/quick-and-easy-inventory/id1582373716) | 4.8 (11) | Free | Productivity | | [Area and Volume Calc lite](https://appshunter.io/ios/app/area-and-volume-calc-lite/id1609771713) | 4.0 (2) | Free | Productivity | ## More apps by emmanuel orvain - [Controlled Breathing pro](https://appshunter.io/ios/app/controlled-breathing-pro/id1035566040) - [French Lafontaine's fables](https://appshunter.io/ios/app/french-lafontaines-fables/id1037581221) - [Animals and sounds quiz](https://appshunter.io/ios/app/animals-and-sounds-quiz/id1048354587) - [Pixl Quiz - Movie](https://appshunter.io/ios/app/pixl-quiz-movie/id1056140801) - [Rule of 3- CrossMultiplication](https://appshunter.io/ios/app/rule-of-3-crossmultiplication/id1066731478) All apps by emmanuel orvain: https://appshunter.io/developer/1025308595 ## Related topics [rule of three calculator pro](https://appshunter.io/ios/topics/rule-of-three-calculator-pro) · [the golden rule](https://appshunter.io/ios/topics/the-golden-rule) · [Rule of Three](https://appshunter.io/ios/topics/rule-of-three) · [rule of three calculator](https://appshunter.io/ios/topics/rule-of-three-calculator) --- *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 2026-08-26.*