# Functional Groups in Chemistry vs Math | Riddles and Puzzle Game

The clearest difference is price: Math | Riddles and Puzzle Game at Free against Functional Groups in Chemistry's $0.99. Math | Riddles and Puzzle Game also leads on rating (4.6 vs 3.6) and update cadence (every 2 months vs every 23 months). Functional Groups in Chemistry's advantage is ads (none vs shown) and chart position (#74 vs unranked). On in-app purchases and device support there is nothing between them.

Math | Riddles and Puzzle Game is free to download; Functional Groups in Chemistry costs $0.99 up front. Functional Groups in Chemistry sells 2 one-off in-app purchases and Math | Riddles and Puzzle Game sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Math | Riddles and Puzzle Game holds the better App Store score, 4.6 against 3.6. That said, the two scores are not equally well evidenced: Math | Riddles and Puzzle Game has 592 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 52% of Functional Groups in Chemistry's written reviews are positive against 81% of Math | Riddles and Puzzle Game's.

Functional Groups in Chemistry ships an update every 23 months, Math | Riddles and Puzzle Game every 2 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Functional Groups in Chemistry | Math | Riddles and Puzzle Game |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.6 (5 ratings)](https://appshunter.io/ios/app/functional-groups-in-chemistry/id859802575/reviews) | **[4.6 (592 ratings)](https://appshunter.io/ios/app/math-riddles-and-puzzle-game/id1455734504/reviews)** |
| Number of ratings | 5 | **592** |
| Positive reviews | 51.9% of reviews | **80.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 23 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#74** | — |
| Size | 23 MB | 100 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrey Solovyev](https://appshunter.io/developer/655223913) | [Saltuk Emre Gul](https://appshunter.io/developer/1455734503) |

## What reviewers say

### Functional Groups in Chemistry

[App page](https://appshunter.io/ios/app/functional-groups-in-chemistry/id859802575)

**Currently charting:** #74 Top Paid · Trivia, #114 Top Paid · Word (US App Store)

Master organic chemistry by learning 80 functional groups and natural products. Engage with interactive quizzes, flashcards, and tables to prepare for exams. Supports learning in 13 languages.

**Highlights:** 80 functional groups and natural products, Spelling, multiple-choice, and time quizzes, Flashcards for memorization, Tables of functional groups, 13 language translations, Exam preparation tool

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | Free | one-time |
| Unlimited Hints | $2.99 | one-time |


### Math | Riddles and Puzzle Game

[App page](https://appshunter.io/ios/app/math-riddles-and-puzzle-game/id1455734504)

Sharpen your mind with mathematical puzzles and brain teasers. This app offers various levels of challenges designed to test and improve your IQ and analytical thinking skills. Suitable for both adults and children, it makes your free time more engaging.

**Highlights:** Mathematical puzzles, IQ and logic challenges, Brain training exercises, Geometrical figure puzzles, Analytical thinking development, Levels for adults and kids

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Forced Ads | $0.99 | one-time |
| 30-Day Premium | $1.99 | one-time |
| Lifetime Premium | $3.99 | one-time |

**What reviewers like**

- 👍 Simple, clean presentation
- 🧠 Challenging, engaging puzzles
- 💡 Great pastime/brain exercise
- 🤗 Fun, enjoyable experience

**What reviewers complain about**

- 🐛 Inaccuracies in math/order of operations
- 🙄 Repetitive puzzle solutions
- 🤬 Predatory advertising practices
- 🙃 Levels do not progress in difficulty

**Reported bugs**

- Incorrect answers being accepted
- Inability to exit ad screens
- Persistent annoying sounds/noises

**Requested features**

- More levels/puzzles
- Explanations/solutions for completed puzzles
- Ability to customize difficulty
- Paid version to remove ads


## Frequently asked questions

### Is Functional Groups in Chemistry free?

Functional Groups in Chemistry costs $0.99, and also offers in-app purchases.

### Is Math | Riddles and Puzzle Game free?

Math | Riddles and Puzzle Game is free to download, with in-app purchases available.

### Which has better reviews, Functional Groups in Chemistry or Math | Riddles and Puzzle Game?

Math | Riddles and Puzzle Game is rated higher. Functional Groups in Chemistry averages 3.6 out of 5 from 5 ratings, while Math | Riddles and Puzzle Game averages 4.6 from 592 ratings.

### Do Functional Groups in Chemistry or Math | Riddles and Puzzle Game have ads?

Math | Riddles and Puzzle Game shows ads; Functional Groups in Chemistry does not.

### Which is updated more often, Functional Groups in Chemistry or Math | Riddles and Puzzle Game?

Functional Groups in Chemistry ships an update every 23 months, and Math | Riddles and Puzzle Game every 2 months. Most recently, Functional Groups in Chemistry was updated on November 1, 2026 and Math | Riddles and Puzzle Game on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*