Brain Test 2: Tricky Stories vs Functional Groups in Chemistry

How do Brain Test 2: Tricky Stories and Functional Groups in Chemistry compare on difficulty, ad pressure, in-app-purchase pressure and what real reviewers say? A side-by-side look, grounded in App Store data.

	Brain Test 2: Tricky Stories	Functional Groups in Chemistry
Genre	Trivia	Trivia
Price	Free	Paid
Difficulty	medium	medium
Ad intensity	high	medium
In-app-purchase pressure	medium	low
Typical session	short	medium
Rating	4.8 / 5	3.6 / 5
Ratings count	228,417	5
Reviews say	What players like Engaging story-driven puzzle levels with memorable characters Good balance of challenge without being frustratingly difficult Helpful hints available when stuck Common complaints Frequent ads interrupting gameplay after nearly every level Ad reward system buggy—watching ads doesn't always grant rewards Some levels have bugs where game mechanics don't work properly	What players like Comprehensive coverage of 80+ functional groups Multiple quiz modes keep learning engaging Flashcards and reference tables for study Common complaints Ads still present despite paid app No way to select specific groups to study Learning mode lacks structured progression

Brain Test 2: Tricky Stories — A collection of tricky brain teasers and riddle puzzles told through quirky story scenarios with colorful characters. (rated medium difficulty, high ad pressure) Functional Groups in Chemistry — Quiz and flashcard app for mastering 80+ organic chemistry functional groups across difficulty levels. (rated medium difficulty, medium ad pressure)

Data: Apple App Store, as of 2026-08-24. Last updated 2026-08-24.