Comparison

GRE Calculator vs Math Riddles,Tricks,Questions

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

Head to head
About

GRE Calculator

Practice for the GRE Quantitative section with a calculator that mimics the restrictions of the official exam. Avoid unrealistic expectations from generic calculators by using a tool designed for accurate GRE preparation.

Highlights
  • Mimics official GRE exam calculator restrictions
  • Realistic practice experience
  • Enforces mathematical order of operations
  • Handles large numbers and undefined computations
  • Digit display limits and rounding
  • GRE Exam Style interface
Features
Read full description

GRE Calculator is for students preparing to give the GRE exam. The calculator offered here is one that's very similar to the one offered during a GRE exam's Quantitative section, because it follows the same operational restrictions. Other generic calculators aren't tailored specifically for GRE exam practice, which is why using them for practice isn't recommended because it gives students unrealistic expectations of what to expect during an actual GRE exam. Given below are *some* of the rules enforced by the on-screen calculator supplied during a GRE exam. GRE Calculator here follows these same rules, giving students a more realistic practice experience: 1) No exponent notations are used or allowed. 2) Use of parenthesis is allowed only to a single degree (i.e. nested parenthesis isn't allowed). 3) Any number with an absolute value larger than 99,999,999 is not displayed, and instead the phrase "Error" is displayed. 4) At any time, no more than 8 digits are shown on the screen. Rounding off is used where needed to meet this requirement. 5) Any computation performed that is mathematically undefined, results in the "Error" message being displayed. 6) Mathematical 'order of operations' is enforced. For example, if calculating 8 + 5 x 3 from left to right, the answer would be 23, not 39. ........... and there's still more! GRE Calculator also offers a style called 'GRE Exam Style', which makes the calculator look strikingly similar to the calculator offered during an actual GRE exam. This offers an even more realistic practice experience for all those using GRE Calculator.

About

Math Riddles,Tricks,Questions

This app offers quick math quizzes to boost mental agility and focus. It features timed challenges, customizable operations, and progress tracking for learners of all ages. Improve your speed and memory with daily brain training exercises.

Highlights
  • Daily brain training
  • Timed challenges
  • Customizable math operations
  • Multiple difficulty levels
  • Progress tracking
  • Game-like interface
Features
Read full description

Math Problems – Train Your Brain in Minutes a Day Boost your mental agility, speed, and focus with Mental Problems, the fun, game-like brain trainer for learners of all ages. Solve challenging problems, track your progress, and sharpen your mind—anytime, anywhere. Why Math Problems? Quick Practice: Endless problems for daily brain training. Timed Challenges: Test your speed with 60-second or 30-seconds sprints. Customizable Focus: Practice addition, subtraction, multiplication, division, or a mix. Multiple Difficulty Levels: From very easy to hard—grow at your own pace. Track Your Progress: Scoreboards and best records to measure improvement. How it Works: Choose your game mode and difficulty. Select the math operations you want to focus on. Solve problems as fast as you can! Compete against your best score and improve every day. Perfect for students, professionals, and anyone who wants to keep their brain sharp. Just a few minutes a day can help you think faster, remember more, and have fun while doing it! As a premium member of app, you enjoy unlimited access to all features! By subscribing you get unlimited access to all the app’s functionality for the whole duration of your subscription period. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. You can manage your subscription and turn off the auto-renewal anytime through your Account Settings. Privacy Policy: https://mobile-apps.dev/mental-math-privacy-policy/ Terms of Use: https://mobile-apps.dev/mental-math-terms-of-use/

Screenshots

GRE Calculator4 screens
Math Riddles,Tricks,Questions4 screens

Verdict

The call

GRE Calculator and Math Riddles,Tricks,Questions both sit at 4.5 stars, but that hides the real split: 81% of GRE Calculator's written reviews are positive against 0% of Math Riddles,Tricks,Questions's. GRE Calculator also leads on in-app purchases (none vs 3) and ads (none vs shown). Math Riddles,Tricks,Questions's advantage is update cadence (weekly vs every 24 months). On price, rating, device support and iOS requirement 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. Math Riddles,Tricks,Questions sells 3 in-app purchases, starting at $2.99 per month. GRE Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for GRE Calculator against 4.4 for Math Riddles,Tricks,Questions. That said, the two scores are not equally well evidenced: GRE Calculator has 375 ratings behind it against 24, so its average is the more settled of the two. Written reviews are what separate them: 81% of GRE Calculator's written reviews are positive against 0% of Math Riddles,Tricks,Questions's.

UpkeepUpdate frequency

GRE Calculator ships an update every 24 months, Math Riddles,Tricks,Questions weekly. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

Scorecard6 real differences · 4 level
GRE Calculator versus Math Riddles,Tricks,Questions: the parameters behind the verdict, then further details
ParameterGRE CalculatorMath Riddles,Tricks,Questions
PriceFreeFree
Rating4.5 (375 ratings) — better4.4 (24 ratings)
Positive reviews80.8% of reviews — better0.0% of reviews
Number of ratings375 — better24
Update frequencyEvery 24 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS16.616.6
Further details — not scored
Size7 MB33 MB
Age rating4+4+
DeveloperAhmad NajeebViacheslav Khakhulin

Customer experience

GRE Calculator

All ratings374 ratings
Positive86.4%
Neutral5.6%
Negative8.0%
Written reviews99 reviews
Positive80.8%
Neutral7.1%
Negative12.1%

Math Riddles,Tricks,Questions

All ratings23 ratings
Positive87.0%
Neutral0.0%
Negative13.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

GRE Calculator

Reported bugs

3 issues
  • Crashes when using certain functions
  • Lag between button press and display
  • Incompatibility with newer iOS versions

Requested features

3 requests
  • Web/computer version
  • Tutorial for advanced functions
  • Ability to use on lock screen

Math Riddles,Tricks,Questions

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

GRE Calculator

No in-app purchases

3 purchases

Math Riddles,Tricks,Questions

Subscriptions2
  • Monthly Pro$2.991 Month
  • Yearly Pro3 Days trial$11.991 Year
One-time1
  • Lifetime Pro$17.99

Questions

Is GRE Calculator free?
GRE Calculator is free to download, with no in-app purchases.
Is Math Riddles,Tricks,Questions free?
Math Riddles,Tricks,Questions is free to download, with in-app purchases available.
Which has better reviews, GRE Calculator or Math Riddles,Tricks,Questions?
GRE Calculator is rated higher. GRE Calculator averages 4.5 out of 5 from 375 ratings, while Math Riddles,Tricks,Questions averages 4.4 from 24 ratings.
Do GRE Calculator or Math Riddles,Tricks,Questions have ads?
Math Riddles,Tricks,Questions shows ads; GRE Calculator does not.
Which is updated more often, GRE Calculator or Math Riddles,Tricks,Questions?
GRE Calculator ships an update every 24 months, and Math Riddles,Tricks,Questions weekly. Most recently, GRE Calculator was updated on November 2, 2026 and Math Riddles,Tricks,Questions on November 5, 2026.

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