# Equation & System Solver vs OCTO Flashcards

The clearest difference is rating: Equation & System Solver at 4.9 against OCTO Flashcards's 2.6. Equation & System Solver also leads on device support (3 vs 1). OCTO Flashcards's advantage is update cadence (every 11 days vs every 2 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Equation & System Solver holds the better App Store score, 4.9 against 2.6. Both are backed by a comparable volume of ratings — 11 and 16 respectively.

Equation & System Solver ships an update every 2 months, OCTO Flashcards every 11 days. The most recent releases landed on September 17, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | Equation & System Solver | OCTO Flashcards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (11 ratings)](https://appshunter.io/ios/app/equation-and-system-solver/id1502274328/reviews)** | [2.6 (16 ratings)](https://appshunter.io/ios/app/octo-flashcards/id1664003220/reviews) |
| Number of ratings | 11 | **16** |
| Positive reviews | — | 53.8% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **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

### Equation & System Solver

[App page](https://appshunter.io/ios/app/equation-and-system-solver/id1502274328)

This app provides step-by-step solutions for various types of mathematical equations. It includes practice exercises, theory cards, and an advanced keyboard for easy input of complex symbols.

**Highlights:** Step-by-step equation solving, Practice exercises with solutions, Mathematical theory cards, Advanced mathematical keyboard, Supports various equation 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 Equation & System Solver free?

Equation & System 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, Equation & System Solver or OCTO Flashcards?

Equation & System Solver is rated higher. Equation & System Solver averages 4.9 out of 5 from 11 ratings, while OCTO Flashcards averages 2.6 from 16 ratings.

### Do Equation & System Solver or OCTO Flashcards have ads?

Both Equation & System Solver and OCTO Flashcards show ads.

### Which is updated more often, Equation & System Solver or OCTO Flashcards?

Equation & System Solver ships an update every 2 months, and OCTO Flashcards every 11 days. Most recently, Equation & System Solver was updated on September 17, 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.*