Comparison

Proportion Solver vs OCTO Flashcards

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Proportion Solver

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
Read full description

Turn your device into the perfect math study companion. "Proportion Solver" is the ultimate app that guides you through solving proportions, helping you understand the logic behind the numbers and always get the right results. Here's everything our app can do for you: ▶ STEP-BY-STEP SOLUTIONS Get the solution in an instant. But we don't stop at the final result: the app shows you all the logical steps in detail to find the unknown in simple or continuous proportions, whether with whole numbers, fractions, or decimals. It's the perfect tool to understand your mistakes, learn the correct method, and get fully prepared for homework and exams. ▶ PROPORTIONS WITH SUM AND DIFFERENCE The app includes a dedicated section exclusively for solving proportions that feature sums or differences. The system automatically applies the addition and subtraction properties, clearly showing you the entire process to reach the result without any confusion. ▶ INTEGRATED MATH KEYBOARD Use our dedicated interface, designed to be incredibly simple and intuitive. Easily type the unknown, fractions, repeating decimals, and parentheses smoothly and quickly, having only the keys you truly need right at your fingertips. ▶ THEORY AND RULES ALWAYS AT HAND Having a memory lapse? Review fundamental principles, the fundamental property of proportions, and solving methods right in the app. Everything you need to know about the topic is in one place. ▶ CLEAN INTERFACE AND DARK THEME No complications. The UI is simple, intuitive, and includes an elegant dark theme, specifically optimized to prevent eye strain during your evening study sessions. ▶ GUARANTEED RELIABILITY Our algorithms are tested and highly optimized to ensure accurate and instant calculations every time, even for the most complex proportions. ▶ CONSTANT UPDATES AND SUPPORT The app is regularly updated to always offer you the best performance and new features. Download "Proportion Solver" today and take your math skills to the next level!

About

OCTO Flashcards

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
Read full description

Let OCTO solve the tradeoff between modern technology and traditional flashcard studying! Utilize your Apple Pencil to write or draw anything you need to memorize- no more constraints from text-only flashcards. STAY ORGANIZED * OCTO's cloud-backed database ensures you never lose your flashcards * Keep all your study materials in one place * Group together flashcard sets into folders * Color code your flashcard sets and folders STUDY EFFECTIVELY * Memorize as you create your flashcards by writing out your material * Keep track of cards you have mastered * Choose to study only mastered cards for a challenge or all flashcards for a refresh * Have quick study sessions with our simple swipe or tap gestures GO PAPERLESS * Create unlimited cards without worrying about the costs * Reduce paper waste and your carbon footprint

Screenshots

Proportion Solver4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Proportion Solver versus OCTO Flashcards: the parameters behind the verdict, then further details
ParameterProportion SolverOCTO Flashcards
PriceFreeFree
Rating3.0 (2 ratings) — better2.6 (16 ratings)
Positive reviews—53.8% of reviews
Number of ratings216 — better
Update frequencyEvery 6 weeksEvery 11 days — better
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supportedAd-supported
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS15.0 — better15.4
Further details — not scored
Size47 MB20 MB
Age rating4+4+
DeveloperFrancesco VarottiElaine Kodama

Customer experience

Proportion Solver

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

OCTO Flashcards

All ratings16 ratings
Positive37.5%
Neutral0.0%
Negative62.5%
Written reviews13 reviews
Positive53.8%
Neutral0.0%
Negative46.2%

In-app purchases

None

Proportion Solver

No in-app purchases

None

OCTO Flashcards

No in-app purchases

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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