Comparison

Rat Zone vs Mental Math

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

Head to head
About

Rat Zone

Experience a virtual conditioning experiment with your own digital rat. Explore Pavlovian and instrumental conditioning concepts, and see how your rat's behavior changes with treats and augmented reality interactions.

Highlights
  • Virtual rat conditioning experiments
  • Pavlovian conditioning concepts
  • Instrumental conditioning concepts
  • Augmented Reality mode
  • Behavioral observation
  • Interactive treat feeding
Features
Read full description

Rat zone helps you experience a conditioning experiment first hand with your own virtual rat! Explore both pavlovian and Instrumental conditioning concepts and learn about the psychology behind the "Pavlov's Dogs" experiment. Bring your rat to life in the optional Augmented Reality mode, then collect crumbs from the flying cake bots and watch your rat's behaviours change as you feed it delicious treats!

About

Mental Math

This app transforms mental math practice into an engaging game. Solve calculations by writing answers directly on the screen, track progress with badges and records, and enjoy a child-friendly, ad-free experience with parental controls.

Highlights
  • Finger-based answer input
  • Timed calculation challenges
  • Multiple math operations
  • Progress tracking with badges
  • Parental controls and profiles
  • Ad-free and no data collection
Features
Read full description

Calmenta is a playful mental math app to learn and practice addition, subtraction, multiplication and division. Work on times tables up to 12, take on timed challenges and write your answers straight on the screen with your finger. Made for children who want to get better at math at their own pace, Calmenta offers mental math exercises from beginner to extreme, with or without a timer. LEARN AND PRACTICE MENTAL MATH • Addition, subtraction, multiplication, division, comparisons and powers. • Times tables up to 12, one table at a time or all together. • 4 difficulty levels to progress at your own pace. • An “All” mode to mix different types of calculation. • Build your own sets by choosing the operations, the level and the number of calculations. WRITE YOUR ANSWER WITH YOUR FINGER No keyboard needed: just write your answer anywhere on the screen. Calmenta recognizes the digits directly on the device, bringing back a natural way of doing math, close to pencil and paper. 20 CALCULATIONS AGAINST THE CLOCK Take on the challenge with sets of 20 mental math exercises and try to beat your best time. Would you rather practice quietly? Turn on Training mode to play without a timer and without time pressure. PROGRESS EVERY DAY • Beat your records and earn stars. • Collect badges as you progress. • Grow your streak of days played. • Track the operations and levels you have mastered. • Keep improving, one calculation at a time. FOR PARENTS • No ads. • No account required. • Progress data stays on the device. • A parents’ area lets you follow each child’s progress. • See results by operation, mastered levels and records. • Create several child profiles for the whole family. FREE AND PREMIUM Calmenta is free to use with 3 games a day and the first 2 levels. Calmenta Premium unlocks: • Unlimited games. • All 4 difficulty levels. • Several child profiles. • Detailed parental tracking. Mental math, times tables, challenges and progress: practice every day with Calmenta. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Rat Zone4 screens
Mental Math4 screens

Verdict

The call

The clearest difference is in-app purchases: Rat Zone at none against Mental Math's 3. Rat Zone also leads on ratings volume (19 vs 3) and iOS requirement (14.0 vs 16.0). Mental Math's advantage is update cadence (weekly vs every 8 months). On price, rating, ads and device support 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. Mental Math sells 3 in-app purchases, starting at $3.99 per month. Rat Zone asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.3 for Rat Zone against 4.3 for Mental Math. That said, the two scores are not equally well evidenced: Rat Zone has 19 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Rat Zone ships an update every 8 months, Mental Math weekly. The most recent releases landed on September 24, 2026 and October 15, 2026 respectively.

Scorecard5 real differences · 5 level
Rat Zone versus Mental Math: the parameters behind the verdict, then further details
ParameterRat ZoneMental Math
PriceFreeFree
Rating4.3 (19 ratings)4.3 (3 ratings)
Positive reviews90.9% of reviews—
Number of ratings19 — better3
Update frequencyEvery 8 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS14.0 — better16.0
Further details — not scored
Size123 MB73 MB
Age rating4+4+
Developerarludo Pty LtdHelloProg

Customer experience

Rat Zone

All ratings19 ratings
Positive78.9%
Neutral10.5%
Negative10.5%
Written reviews11 reviews
Positive90.9%
Neutral9.1%
Negative0.0%

Mental Math

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%

In-app purchases

None

Rat Zone

No in-app purchases

3 purchases

Mental Math

Subscriptions2
  • Premium Monthly$3.991 Month
  • Abonnement annuel7 Days trial$9.991 Year
One-time1
  • Premium à vie$22.99

Questions

Is Rat Zone free?
Rat Zone is free to download, with no in-app purchases.
Is Mental Math free?
Mental Math is free to download, with in-app purchases available.
Which has better reviews, Rat Zone or Mental Math?
Rat Zone and Mental Math are both rated 4.3 out of 5 on the App Store, from 19 and 3 ratings respectively.
Do Rat Zone or Mental Math have ads?
Neither Rat Zone nor Mental Math shows ads.
Which is updated more often, Rat Zone or Mental Math?
Rat Zone ships an update every 8 months, and Mental Math weekly. Most recently, Rat Zone was updated on September 24, 2026 and Mental Math on October 15, 2026.

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