D vs Duo ABC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
D
This app offers an integrated digital curriculum designed for preschoolers. It uses interactive technology to engage children in learning, fostering research, critical thinking, and creativity. The program also encourages family and community involvement in the educational experience.
- Integrated digital curriculum
- Interactive technology for learning
- Fosters critical thinking
- Nurtures creativity
- Encourages family involvement
- Promotes research and discovery
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D-Genius is an integrated digital curriculum aimed for children at a preschool age.Our curriculum promotes the application of intentional technology throughout the teaching and learning experience. The use of interactive technological resources stimulate the participation of children. These experiences motivate them, prepare and encourage them to participate in innovative activities. An essential part in the development of the child,is the integration of their families and the school community, which is fostered in the learning experiences provided. D-Geniuscontemplatesthe appropriate practices and the effective use of learning centers. The activities direct the children to research, discovery, critical thinking, and problem solving, while nurturing their creativity.
Duo ABC
This app helps 10th-grade students master English with interactive tests and lessons. It offers offline access and allows for self-paced learning, making it a convenient tool for academic success.
- Offline Access
- Interactive Tests
- Self-paced Learning
- Teacher-Friendly Interface
- Grade 10 English Mastery
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# Duo ABC 123 Learn Letters With **Duo ABC 123 Learn Letters**, children can build essential early learning skills through fun and interactive activities. The app helps young learners explore the English alphabet (ABC), numbers (123), shapes, colors, and other preschool basics in an engaging way. Designed for early learners, the app makes learning simple with bite-sized lessons and educational games. Children can practice recognizing letters, learning numbers, counting, identifying shapes, and discovering colors while having fun. Instead of relying only on books or worksheets, the app provides an interactive learning experience on phones and tablets, making daily practice enjoyable and motivating. Whether your child is just starting to learn the alphabet, practicing numbers, exploring basic geometry, or preparing for preschool and kindergarten, **ABC 123 Learn Letters** is a great companion for early education. ## Key Features * Learn the English alphabet (ABC) through fun activities. * Practice numbers (123) and basic counting skills. * Discover basic shapes such as circles, squares, and triangles. * Learn colors with engaging visual activities. * Build early reading and writing readiness. * Short, easy-to-follow lessons for daily practice. * Interactive educational games that make learning enjoyable. * Simple, child-friendly interface. * Many lessons are available offline. Start learning today with **Duo ABC 123 Learn Letters**—the perfect companion for learning letters, numbers, shapes, and colors through fun educational activities. Please read our Terms of Use: https://thanhbkap.github.io/M4U-Term-And-Use/
Screenshots
Verdict
The clearest difference is rating: Duo ABC at 4.6 against D's 1.0. Duo ABC also leads on update cadence (every 3 weeks vs every 16 months) and ratings volume (21 vs 1). D's advantage is in-app purchases (none vs 8). On price, ads, 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. Duo ABC sells 8 in-app purchases, starting at $1.49 per 3 months. D asks for nothing beyond the download.
Duo ABC holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Duo ABC has 21 ratings behind it against 1, so its average is the more settled of the two.
D ships an update every 16 months, Duo ABC every 3 weeks. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | D | Duo ABC |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 4.6 (21 ratings) — better |
| Number of ratings | 1 | 21 — better |
| Update frequency | Every 16 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 79 MB | 158 MB |
| Age rating | 4+ | 4+ |
| Developer | Dreyfous & Associates | nguyen thanh |
In-app purchases
D
No in-app purchases
Duo ABC
- Three Months VIP$1.493 Months
- Learning Premium Monthly Plan$1.991 Month
- One Month VIP3 Days trial$4.991 Month
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- Learning Premium HalfYear Plan$5.996 Months
- Learning Premium Annual Plan$9.991 Year
- 1 Year VIP3 Days trial$24.991 Year
- Six Months VIP3 Days trial$24.996 Months
- No ads Pack$14.99









