# R2R: Functional Groups > Interactive app for learning and practicing organic chemistry functional groups. (iPhone/iPad app by James Styles.) - Source: https://appshunter.io/ios/app/r2r-functional-groups/id1225511399 (this page in markdown: same URL + `.md`) - Developer: [James Styles](https://appshunter.io/developer/1537953716) - Category: Education - Price: Free - Rating: 4.70/5 from 124 App Store ratings · 8 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 57 MB - Languages: American English - Released: 2017-04-17 - Data updated: 2026-09-03 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/r2r-functional-groups/id1225511399/reviews.md ## What is R2R? Put the Fun in Functional Groups with Prof. Rudi Rabbit! Aimed at those studying ALevel Chemistry, this app is designed to help you learn the different functional groups that may come up in your examinations or extension competitions. Use the 'Learn' screen to review the different groups and how you tell them apart, 'Practice' with different R-Groups and then 'Play' and try and beat the professor under timed conditions. Once you have beaten the professor then you are ready for some of Race to Revise's other organic synthesis games. ## Key features - Learn functional groups - Practice with R-Groups - Timed challenges - Review different groups - Prepare for exams ## Recent user reviews (8 of 8) All indexed reviews: https://appshunter.io/ios/app/r2r-functional-groups/id1225511399/reviews.md ### 5/5 — Auto-Next *2024-02-01, version 1.3* My ONLY complaint is that it is mildly inconvenient in practice mode to have to hit the next button every time. If it would auto go to the next group after selecting the correct answer it would take this app from 9.7/10 -> 10/10. ### 4/5 — overall great *2022-04-02, version 1.3* my only request is that you could filter out groups that you don’t need to learn ### 3/5 — Very repetitive *2020-03-21, version 1.3* This has the potential to be a good tool but so far the quiz option is repetitive to the point of being frustrating. I, no joke, was given alkane 5 times in a row. I thought it was a glitch but then I got other functional groups repetitively too. This app would be better if they had a quiz option where they pointed to functional groups within a larger molecule for you to identify. Also, implementing spaced repetition would vastly improve the effectiveness. ### 4/5 — Like it, but... *2018-06-05, version 1.3* This game is great, actually my favorite so far, but it would be even better if it were slightly customizable. If you could choose what groups you wanted to study, or even edit some of the names to match the ones your instructor uses. It would be helpful too if you could add more functional groups that aren’t included. Overall great for some of the basics! ### 3/5 — Race to revise quiz *2017-08-16, version 1.0* This is essentially a good quiz & serves as a brain teaser. There is an error in the classification of mono-substituted derivatives as arenes as appose to aryl substituted compounds. ### 5/5 — Miss *2017-04-23, version 1.0* Brilliant App! Helped a lot with my Chemistry. ### 5/5 — Helped a lot *2017-04-18* Found this useful to identify functional groups. Had some I hadn't seen or need though ### 5/5 — Good for Revision *2017-04-17, version 1.0* Helps with getting the basics in your head. ## Frequently asked questions about R2R ### What is R2R: Functional Groups used for? R2R: Functional Groups is an educational app designed to help students learn and practice identifying different organic chemistry functional groups. It features a 'Learn' screen for review, a 'Practice' mode with R-Groups, and a timed 'Play' mode against the professor. ### Who is the target audience for R2R: Functional Groups? This app is specifically aimed at students studying A-Level Chemistry. It is also beneficial for those participating in extension competitions or anyone looking to reinforce their knowledge of organic functional groups. ### How does R2R: Functional Groups help with learning? The app employs a multi-faceted approach to learning. Users can review definitions and identification methods on the 'Learn' screen, test their understanding with various R-Groups in 'Practice', and challenge their speed and accuracy in timed 'Play' sessions. ### What is the learning methodology of R2R: Functional Groups? R2R: Functional Groups utilizes a combination of review, practice, and gamified challenges. This method aims to reinforce learning through repetition and timed application, making the study of functional groups more engaging. ### Does R2R: Functional Groups offer progress tracking? While the app has a 'Play' mode where users can try to 'beat the professor' under timed conditions, specific detailed progress tracking features are not explicitly mentioned in the description. The focus is on interactive learning and practice. ### Is R2R: Functional Groups available on multiple devices? Yes, R2R: Functional Groups is supported on iPhone, iPad, and iPod devices. This allows students to study on their preferred Apple mobile platform. ### How often is R2R: Functional Groups updated? The app was last updated on February 14, 2018, with version 1.3. While not frequently updated recently, it offers a stable learning experience for its core functionality. ### What do users think of R2R: Functional Groups? Users have rated R2R: Functional Groups highly, with an average of 4.7 stars from 124 ratings. This indicates a generally positive user sentiment regarding its effectiveness and usability for learning functional groups. ## Version history (last 3 releases) ### 1.3 — 2018-02-14 This app has been updated by Apple to display the Apple Watch app icon. A few cosmetic updates and bug fixes. Thanks for playing! ### 1.2 — 2017-10-28 Fixes some layout issues in preparation for iPhone X and fixes a few minor bugs. ### 1.0 — 2017-04-17 No release notes. ## More apps by James Styles - [R2R: Organic Synthesis](https://appshunter.io/ios/app/r2r-organic-synthesis/id1224055846) - [R2R: Advanced Chemistry](https://appshunter.io/ios/app/r2r-advanced-chemistry/id1268437563) - [R2R: GCSE Chemistry](https://appshunter.io/ios/app/r2r-gcse-chemistry/id1412733078) - [Capsule Lander](https://appshunter.io/ios/app/capsule-lander/id1439904471) - [R2R: Chemistry Battle](https://appshunter.io/ios/app/r2r-chemistry-battle/id1524614212) All apps by James Styles: https://appshunter.io/developer/1537953716 ## Related topics [functional groups](https://appshunter.io/ios/topics/functional-groups) · [functional groups in chemistry](https://appshunter.io/ios/topics/functional-groups-in-chemistry) · [organic chemistry functional groups](https://appshunter.io/ios/topics/organic-chemistry-functional-groups) · [functional group quiz](https://appshunter.io/ios/topics/functional-group-quiz) --- *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 2026-09-03.*