Comparison

POP Math Cards vs Circle and Sphere Pro

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

Head to head
About

POP Math Cards

Engage in enjoyable math quizzes with flashcards covering addition, subtraction, multiplication, and division. Progress through levels, unlock new game customizations, and achieve weekly learning objectives. The app adapts difficulty and offers accessibility features for a personalized learning experience.

Highlights
  • Math flashcard quizzes
  • Multiple game modes
  • Progress tracking and leveling
  • Unlockable customizations
  • Weekly learning objectives
  • Adaptive difficulty
  • Accessibility features
Features
Read full description

POP! Math Cards quizzes you with fun math flash cards across a variety of game modes for addition, subtraction, multiplication/Times Tables multiples, and division! Play fun quizzes with colorful comic style backgrounds and music, and show off your progress across games with your “Study Goals” level meter that increases with correct quiz answers! As you level up, you can unlock more backgrounds and colors to decorate your games with! You can also level up even more by playing weekly Study Goals objectives, where POP! Math Cards creates 2-4 weekly goals based off of which types of math (or Times Table multiples) that you are currently learning! Parents/Educators can appreciate that various parts of the game adjust their difficulty to the player’s performance, in order for players to better learn. (Weekly Study Goal objectives change their difficulty based on player performance, and multiplication quizzes prioritize repeating problems that the player gets stuck on.) POP! Math Cards is also designed to be accessibility friendly, with VoiceOver support, Large Text support, and various game settings such as “Training Wheels” (where you can try again if you pick the wrong answer in a quiz, but without increasing your score). Improve your math skills while having fun with POP! Math Cards!

About

Circle and Sphere Pro

This app calculates various geometric quantities for circles and spheres, including sectors and segments. It supports decimals and fractions, displays formulas and solutions step-by-step, and stores calculations in a history. Users can share their results.

Highlights
  • Calculates sphere and circle quantities
  • Supports sectors and segments
  • Shows formulas and step-by-step solutions
  • Handles decimals and fractions
  • Stores calculations in history
  • Allows sharing of results
Features
Read full description

This app calculates all quantities of a sphere (body of a sphere, circle, all parts of sector and segment). Therefore you must enter some variables (like the radius of a circle and the central angle). The algorithm searches the formulas of the missing quantities, shows them and calculates the results. Decimals and fractions are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Content ] - all important quantities for the circle and sphere calculation - formulas for all important quantities of a sphere, circle, sector and the segment - infographic to illustrate the topic - search bar to find the desired quantity - history function to save input - detailed solution - positive numbers, decimals and fractions are supported - no ads! [ Usage ] - there are several fields for entering the values ​​using a special keyboard - if values are missing, all fields are highlighted in orange - if values are oppositions (like "r = 1 and d = 3"), one affected field is highlighted in red - every value must be positive - maximum of alpha is 360° - beta must be less than 90° - if a value is no number, it is highlighted in red - the entries in the history can be deleted or sorted manually - if you select an entry in the history, it will be loaded automatically for the calculation - the entire history can be deleted by pressing a button - solutions can be shared

Screenshots

POP Math Cards4 screens
Circle and Sphere Pro4 screens

Verdict

The call

POP Math Cards and Circle and Sphere Pro both sit at 5.0 stars, but that hides the real split: 100% of POP Math Cards's written reviews are positive against 67% of Circle and Sphere Pro's. POP Math Cards also leads on price ($1.99 vs $2.99). Circle and Sphere Pro's advantage is update cadence (monthly vs every 25 months) and iOS requirement (15.0 vs 17.0). On rating, ratings volume, ads and in-app purchases 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

POP Math Cards costs $1.99 and Circle and Sphere Pro $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for POP Math Cards against 4.9 for Circle and Sphere Pro. Both are backed by a comparable volume of ratings — 13 and 7 respectively. Written reviews are what separate them: 100% of POP Math Cards's written reviews are positive against 67% of Circle and Sphere Pro's.

UpkeepUpdate frequency

POP Math Cards ships an update every 25 months, Circle and Sphere Pro monthly. The most recent releases landed on September 12, 2026 and August 30, 2026 respectively.

Scorecard5 real differences · 5 level
POP Math Cards versus Circle and Sphere Pro: the parameters behind the verdict, then further details
ParameterPOP Math CardsCircle and Sphere Pro
Price$1.99 — better$2.99
Rating5.0 (13 ratings) — better4.9 (7 ratings)
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings13 — better7
Update frequencyEvery 25 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size210 MB180 MB
Age rating4+4+
DeveloperJustin HopkinsGlindemann, Sennoun, Langer GbR

Customer experience

POP Math Cards

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Circle and Sphere Pro

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

POP Math Cards

No in-app purchases

None

Circle and Sphere Pro

No in-app purchases

Questions

Is POP Math Cards free?
POP Math Cards costs $1.99, with no in-app purchases.
Is Circle and Sphere Pro free?
Circle and Sphere Pro costs $2.99, with no in-app purchases.
Which has better reviews, POP Math Cards or Circle and Sphere Pro?
POP Math Cards is rated higher. POP Math Cards averages 5.0 out of 5 from 13 ratings, while Circle and Sphere Pro averages 4.9 from 7 ratings.
Do POP Math Cards or Circle and Sphere Pro have ads?
Neither POP Math Cards nor Circle and Sphere Pro shows ads.
Which is updated more often, POP Math Cards or Circle and Sphere Pro?
POP Math Cards ships an update every 25 months, and Circle and Sphere Pro monthly. Most recently, POP Math Cards was updated on September 12, 2026 and Circle and Sphere Pro on August 30, 2026.

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