# Proportion Solver vs OCTO Flashcards

The clearest difference is rating: Proportion Solver at 3.0 against OCTO Flashcards's 2.6. Proportion Solver also leads on device support (3 vs 1). OCTO Flashcards's advantage is update cadence (every 11 days vs every 6 weeks) and ratings volume (16 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Proportion Solver holds the better App Store score, 3.0 against 2.6. That said, the two scores are not equally well evidenced: OCTO Flashcards has 16 ratings behind it against 2, so its average is the more settled of the two.

Proportion Solver ships an update every 6 weeks, OCTO Flashcards every 11 days. The most recent releases landed on September 3, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | Proportion Solver | OCTO Flashcards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/proportion-solver/id1532616220/reviews)** | [2.6 (16 ratings)](https://appshunter.io/ios/app/octo-flashcards/id1664003220/reviews) |
| Number of ratings | 2 | **16** |
| Positive reviews | — | 53.8% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 47 MB | 20 MB |
| Requires iOS | **15.0** | 15.4 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Francesco Varotti](https://appshunter.io/developer/1501752853) | [Elaine Kodama](https://appshunter.io/developer/1664003222) |

## What reviewers say

### Proportion Solver

[App page](https://appshunter.io/ios/app/proportion-solver/id1532616220)

This app provides step-by-step solutions for mathematical proportions. It's designed for students and math enthusiasts to learn, practice, and simplify calculations with an intuitive interface and theoretical resources.

**Highlights:** Automatic proportion solving with steps, Theory cards for understanding, Advanced math keyboard, Intuitive interface, Integrated learning, Supports all proportion types

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Proportion Solver free?

Proportion Solver is free to download, with no in-app purchases.

### Is OCTO Flashcards free?

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

### Which has better reviews, Proportion Solver or OCTO Flashcards?

Proportion Solver is rated higher. Proportion Solver averages 3.0 out of 5 from 2 ratings, while OCTO Flashcards averages 2.6 from 16 ratings.

### Do Proportion Solver or OCTO Flashcards have ads?

Both Proportion Solver and OCTO Flashcards show ads.

### Which is updated more often, Proportion Solver or OCTO Flashcards?

Proportion Solver ships an update every 6 weeks, and OCTO Flashcards every 11 days. Most recently, Proportion Solver was updated on September 3, 2026 and OCTO Flashcards on August 20, 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.*