MindCalc Arithmetic Trainer vs NobleMinds Montessori
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MindCalc Arithmetic Trainer
Sharpen your mental math skills by solving equations where you must select two numbers to match a given result and operator. Earn points for speed, but beware of mistakes that reset your progress. Challenge a friend to a duel of arithmetic prowess.
- Equation solving with number selection
- Speed-based scoring
- Mistake penalty
- High difficulty mode
- Two-player competitive mode
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Train your mental arithmetic ability with MindCalc! This is NOT your standard "what is 7 * 13?" type of game but here the result is already known and an arithmetic operator is given. Now you need to pick two numbers out of 9 to make this equation happen. The faster you solve your equation, the more points you gain. But if you make a mistake you need to start all over - so be careful! For an extra kick choose the highest difficulty where your score will be reset to zero in case you run out of time. You can also compete against another person to see who has stronger mental arithmetic skills!
NobleMinds Montessori
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NobleMinds Montessori Mobile App is a free app for anyone in NobleMinds Montessori. It makes it easy for students and parents to get announcements and updates from the school. The app saves time as it replaces the need for a face-to-face interactions for common inquiries. • Authentication – Users are sent a code to their mobile number to ensure that only them can see the information relating to their account. • Saves time – It replaces the need for a face-to-face interactions through the use of public feeds of announcements and calendar of activities. • Organized information – Common inquiries may be answered with the app. Students and parents are able to retrieve information from the respective tabs without hassle. USST Mobile App is a free app for anyone in United School of Science and Technology. It makes it easy for students and parents to get announcements and updates from the school. The app saves time as it replaces the need for a face-to-face interactions for common inquiries. • Authentication – Users are sent a code to their mobile number to ensure that only them can see the information relating to their account. • Saves time – It replaces the need for a face-to-face interactions through the use of public feeds of announcements and calendar of activities. • Organized information – Common inquiries may be answered with the app. Students and parents are able to retrieve information from the respective tabs without hassle
Screenshots
Verdict
The clearest difference is update cadence: NobleMinds Montessori at every 2 months against MindCalc Arithmetic Trainer's every 21 months. NobleMinds Montessori also leads on iOS requirement (10.0 vs 15.4). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MindCalc Arithmetic Trainer ships an update every 21 months, NobleMinds Montessori every 2 months. The most recent releases landed on October 23, 2026 and October 18, 2026 respectively.
| Parameter | MindCalc Arithmetic Trainer | NobleMinds Montessori |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (12 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 21 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.4 | 10.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Schorn | WELA.ONLINE CORP. |
In-app purchases
MindCalc Arithmetic Trainer
No in-app purchases
NobleMinds Montessori
No in-app purchases
Questions
Is MindCalc Arithmetic Trainer free?
Is NobleMinds Montessori free?
Do MindCalc Arithmetic Trainer or NobleMinds Montessori have ads?
Which is updated more often, MindCalc Arithmetic Trainer or NobleMinds Montessori?
Other comparisons
