# OCTO Flashcards vs Functional Groups

The clearest difference is review sentiment: Functional Groups at 100% against OCTO Flashcards's 54%. Functional Groups also leads on rating (4.9 vs 2.6) and ads (none vs shown). OCTO Flashcards's advantage is in-app purchases (none vs 1) and update cadence (every 11 days vs every 4 months). On price, ratings volume and iOS requirement there is nothing between them.

Both are free to download. Functional Groups sells 1 one-off in-app purchase. OCTO Flashcards asks for nothing beyond the download.

Functional Groups holds the better App Store score, 4.9 against 2.6. Both are backed by a comparable volume of ratings — 16 and 21 respectively. Written reviews point the same way: 54% of OCTO Flashcards's written reviews are positive against 100% of Functional Groups's.

OCTO Flashcards ships an update every 11 days, Functional Groups every 4 months. The most recent releases landed on August 20, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | OCTO Flashcards | Functional Groups |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (16 ratings)](https://appshunter.io/ios/app/octo-flashcards/id1664003220/reviews) | **[4.9 (21 ratings)](https://appshunter.io/ios/app/functional-groups/id1670252638/reviews)** |
| Number of ratings | 16 | **21** |
| Positive reviews | 53.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 4 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 20 MB | 17 MB |
| Requires iOS | 15.4 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Elaine Kodama](https://appshunter.io/developer/1664003222) | [Clarity Applications](https://appshunter.io/developer/1646120472) |

## What reviewers say

### OCTO Flashcards

[App page](https://appshunter.io/ios/app/octo-flashcards/id1664003220)

This app offers a digital solution for studying with flashcards, allowing users to write and draw using an Apple Pencil. It provides organizational tools like folders and color-coding, along with study features to track mastered cards and facilitate quick review sessions. Go paperless and create unlimited study materials without cost.

**Highlights:** Apple Pencil support for writing and drawing, Cloud-backed database for card storage, Folder organization and color-coding, Mastered card tracking, Quick study sessions with swipe/tap gestures, Unlimited card creation

**In-app purchases:** none


### Functional Groups

[App page](https://appshunter.io/ios/app/functional-groups/id1670252638)

Master organic chemistry functional groups through an engaging and interactive learning experience. Ideal for students in introductory or advanced courses, MCAT prep, and A-Level chemistry, this app covers dozens of essential groups with practice modes and progress tracking.

**Highlights:** 25+ basic and advanced functional groups, 300+ organic compounds, Multiple practice modes, Customizable study groups, Personalized review, Reference table and definitions, Progress tracking with achievements

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $9.99 | one-time |


## Frequently asked questions

### Is OCTO Flashcards free?

OCTO Flashcards is free to download, with no in-app purchases.

### Is Functional Groups free?

Functional Groups is free to download, with in-app purchases available.

### Which has better reviews, OCTO Flashcards or Functional Groups?

Functional Groups is rated higher. OCTO Flashcards averages 2.6 out of 5 from 16 ratings, while Functional Groups averages 4.9 from 21 ratings.

### Do OCTO Flashcards or Functional Groups have ads?

OCTO Flashcards shows ads; Functional Groups does not.

### Which is updated more often, OCTO Flashcards or Functional Groups?

OCTO Flashcards ships an update every 11 days, and Functional Groups every 4 months. Most recently, OCTO Flashcards was updated on August 20, 2026 and Functional Groups on September 13, 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.*