St Michael's vs Dual
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
St Michael's
This app enhances home-school communication with features like personalized notifications, direct messaging between parents, teachers, and students, and an e-diary for tracking schedules and assignments. It provides easy access to school news, contact information, and timetables.
- Personalized notifications
- Direct messaging
- e-Diary for schedules
- Assignment due date reminders
- School news and newsletters
- Dynamic timetable access
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Your connection to St Michael's Grammar School. The St Michael's app provides quick access to student information, academic reports, news, forms and important updates — supporting informed and engaged families.
Dual
This cognitive training game is designed to enhance working memory through a simple yet challenging experience. It offers a clean interface with detailed history tracking and customizable gameplay and aesthetics. All data is stored locally for enhanced privacy.
- Working memory improvement
- Detailed game history
- Replay previous rounds
- Gameplay customization
- Aesthetic customization
- Local data storage
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Welcome to Dual-N-Back, a cognitive game scientifically proven to improve working memory. The game is fairly simple to learn, but it can get quite challenging as you get to higher levels. The philosophy of this app is to provide a clean and minimalistic interface for the game Dual-N-Back, whilst providing additional functionality to help users improve as fast as possible and understand their tendencies. Some Features Include: - Game history, with full information on your Correct answers, Misses and False Alarms. - Trial history, for the games that you have recently played. You will be able to view the squares that showed up, as well as which letters were said. You can also view which buttons you pressed to see where you went wrong. - Replay round, allowing you to play a round you previously played, with the same squares on the grid, with the same letters which were said. - Gameplay customisations, such as quadratic or linear trial numbers, trial duration, automatic N-level adjustments. - Aesthetic customisations, such as light or dark mode, and accent colours. - Note: this application does not make any connections to external servers, and all your information will be kept locally for privacy sake. It will not make any notifications and has zero advertisements and subscription based services.
Screenshots
Verdict
The clearest difference is price: St Michael's at Free against Dual's $0.99. St Michael's also leads on rating (5.0 vs 4.8). Dual's advantage is review sentiment (90% vs 60%) and update cadence (every 2 days vs every 7 months). On ads, 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
St Michael's is free to download; Dual costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
St Michael's holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews complicate that: 60% of St Michael's's written reviews are positive against 90% of Dual's, so the app with the better star average is not the one people write more warmly about.
St Michael's ships an update every 7 months, Dual every 2 days. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.
| Parameter | St Michael's | Dual |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) — better | 4.8 (4 ratings) |
| Positive reviews | 60.0% of reviews | 90.0% of reviews — better |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 7 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 82 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | St Michaels Grammar School | Andrew Tang |
Customer experience
St Michael's
Dual
In-app purchases
St Michael's
No in-app purchases
Dual
No in-app purchases
