Comparison

R2R vs SciQuiz

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

R2R

Learn and practice organic chemistry functional groups with interactive lessons and timed challenges. This app is designed for A-Level Chemistry students to prepare for exams and competitions.

Highlights
  • Learn functional groups
  • Practice with R-Groups
  • Timed challenges
  • Review different groups
  • Prepare for exams
Read full description

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.

About

SciQuiz

Engage with over 45,000 science quizzes covering biology, chemistry, geography, and physics. Explore scientific concepts through interactive 3D models and discover the world of science with curated news summaries.

Highlights
  • Extensive quiz library (45,000+)
  • Biology, Chemistry, Geography, Physics topics
  • Interactive 3D molecule models
  • Microcosm exploration
  • Science and health news summaries
  • Experiment-based learning
Features
Read full description

Explore science through quizzes, interactive experiments, strategy games, and daily news — all in one app. SciQuiz includes more than 45,000 quiz questions covering Biology, Chemistry, Geography, and Physics to help students practice and strengthen their science knowledge. Interactive science tools let you explore the microscopic world in 3D. Render molecular structures, rotate and zoom models, and discover the beauty of atoms and molecules from every angle. Enjoy a collection of science-inspired puzzle and strategy games. Assemble molecules by sliding atoms across the board, rotate mirrors to guide laser beams through electronic circuits, and explore photons, superposition, and entanglement through interactive quantum physics gameplay. These games combine logic, planning, and real scientific concepts into fun hands-on challenges. Stay informed with a built-in science and health news summary featuring interesting discoveries, research, and current events.

Screenshots

R2R4 screens
SciQuiz4 screens

Verdict

The call

The clearest difference is ads: R2R at none against SciQuiz's shown. R2R also leads on monetization model (free vs ad-supported) and review sentiment (75% vs 67%). On price, rating, ratings volume and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for R2R against 4.6 for SciQuiz. Both are backed by a comparable volume of ratings — 124 and 53 respectively. Written reviews are what separate them: 75% of R2R's written reviews are positive against 67% of SciQuiz's.

UpkeepUpdate frequency

R2R ships an update every 5 months, SciQuiz every 3 months. The most recent releases landed on September 17, 2026 and September 25, 2026 respectively.

Scorecard4 real differences · 6 level
R2R versus SciQuiz: the parameters behind the verdict, then further details
ParameterR2RSciQuiz
PriceFreeFree
Rating4.7 (124 ratings) — better4.6 (53 ratings)
Positive reviews75.0% of reviews — better66.7% of reviews
Number of ratings124 — better53
Update frequencyEvery 5 monthsEvery 3 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS9.0 — better15.0
Further details — not scored
Size57 MB297 MB
Age rating4+9+
DeveloperJames StylesJianfeng Wu

Customer experience

R2R

All ratings124 ratings
Positive93.5%
Neutral4.8%
Negative1.6%
Written reviews8 reviews
Positive75.0%
Neutral25.0%
Negative0.0%

SciQuiz

All ratings53 ratings
Positive86.8%
Neutral9.4%
Negative3.8%
Written reviews21 reviews
Positive66.7%
Neutral9.5%
Negative23.8%

In-app purchases

None

R2R

No in-app purchases

None

SciQuiz

No in-app purchases

Questions

Is R2R free?
R2R is free to download, with no in-app purchases.
Is SciQuiz free?
SciQuiz is free to download, with no in-app purchases.
Which has better reviews, R2R or SciQuiz?
R2R is rated higher. R2R averages 4.7 out of 5 from 124 ratings, while SciQuiz averages 4.6 from 53 ratings.
Do R2R or SciQuiz have ads?
SciQuiz shows ads; R2R does not.
Which is updated more often, R2R or SciQuiz?
R2R ships an update every 5 months, and SciQuiz every 3 months. Most recently, R2R was updated on September 17, 2026 and SciQuiz on September 25, 2026.

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