# R2R: Functional Groups — user reviews

> 8 indexed App Store user reviews of R2R by James Styles, rated 4.70/5 from 124 ratings.

- Source: https://appshunter.io/ios/app/r2r-functional-groups/id1225511399/reviews
- App overview in markdown: https://appshunter.io/ios/app/r2r-functional-groups/id1225511399.md
- Rating breakdown: 5★ 101 · 4★ 15 · 3★ 6 · 2★ 0 · 1★ 2

## Most critical reviews (8 lowest-rated)

### 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.

### 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.

### 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

### 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!

### 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.

### 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.

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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 2026-09-03.*