Justo Sierra vs Mental Arithmetic Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Justo Sierra
This app provides students with school services, including grade checking and digital identification. It also sends notifications for important school communications like attendance reports and medical visits.
- View grades
- Access digital ID
- Receive school notifications
- Track attendance reports
- Get medical visit alerts
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La nueva App de Justo Sierra proporciona al alumnado servicios escolares como la consulta de calificaciones y credencial. Además, notifica a los estudiantes diferentes comunicados como reportes de entrada, salida y visitas al servicio médico.
Mental Arithmetic Math
Engage in fun arithmetic challenges suitable for all ages. Improve your math skills and concentration with adjustable difficulty levels. Play solo or with friends, even offline, for a quick and enjoyable brain workout.
- Arithmetic challenges
- Adjustable difficulty
- Suitable for all ages
- Play with friends
- Offline play
- Improves concentration
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■ Application Features Have a great time playing with family and friends. Become skilled at arithmetic, useful for your mathematical studies. Play with a difficulty that matches your level. Enjoyable for all ages. Even playing for a short amount of time can be a lot of fun! You can also play offline. Increase your ability to concentrate through brain activation.
Screenshots
Verdict
The clearest difference is ads: Justo Sierra at none against Mental Arithmetic Math's shown. Justo Sierra also leads on update cadence (fortnightly vs every 2 months) and monetization model (free vs ad-supported). Mental Arithmetic Math's advantage is review sentiment (90% vs 64%). On price, in-app purchases, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Justo Sierra ships an update fortnightly, Mental Arithmetic Math every 2 months. Both last shipped on October 24, 2026.
| Parameter | Justo Sierra | Mental Arithmetic Math |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.4 (97 ratings) — better |
| Positive reviews | 63.6% of reviews | 90.0% of reviews — better |
| Number of ratings | — | 97 — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 55 MB | 105 MB |
| Age rating | 4+ | 4+ |
| Developer | Centro Cultural Universitario Justo Sierra, A.C. | Satoshi Konno |
Customer experience
Justo Sierra
Mental Arithmetic Math
In-app purchases
Justo Sierra
No in-app purchases
Mental Arithmetic Math
No in-app purchases
Questions
Is Justo Sierra free?
Is Mental Arithmetic Math free?
Do Justo Sierra or Mental Arithmetic Math have ads?
Which is updated more often, Justo Sierra or Mental Arithmetic Math?
Other comparisons
