Devmaxx vs MyDD.ai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Devmaxx
This app provides a daily system design question to help software engineers master essential skills for interviews and career growth. It offers clear explanations, linked resources, and a private community for learning and practice.
- Daily system design questions
- Clear explanations and answer breakdowns
- Linked learning resources
- Access to previous questions
- Private developer community
- Progress tracking
Read full descriptionHide full description
System design is becoming one of the most important skills for software engineers. Many companies now require a dedicated system design interview, and your career growth often depends on your ability to design large-scale systems. Devmaxx gives you one focused system design question every day across databases, infrastructure, APIs, theory, and product to help you learn these skills and stay sharp. Each question takes about two minutes, and includes a resource to learn more about the subject. What you’ll get: • A new system design question daily • Clear explanations for every answer • Breakdown of the correct answer • Access to previous questions • Linked resources to go deeper • Access to a private community of developers learning and building the same things as you • Progress tracking to monitor growth If you’re preparing for interviews, this builds daily momentum. If you’re already working as an engineer, this keeps your fundamentals sharp. Open the app. Answer one question. Land the offer. * All features described above require a subscription Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
MyDD.ai
This AI chat application is designed for children, offering age-appropriate guardrails and parental controls. It aims to teach kids how to use AI as a tool for thinking, rather than copying, while keeping parents informed.
- AI chat designed for children
- Parental controls and oversight
- Teaches AI as a thinking tool
- Age-appropriate guardrails
- Privacy-focused
Read full descriptionHide full description
Your kid is going to use AI… probably already is. But ChatGPT wasn't built for a 10-year-old. MyDD.ai was. It teaches them to think with AI, not copy from it, and that AI is a tool, not a friend. Age-appropriate guardrails are built in and you stay in the loop without hovering over their shoulder. Privacy Policy: https://mydd.ai/privacy Terms of Use: https://mydd.ai/terms
Screenshots
Verdict
The clearest difference is review sentiment: MyDD.ai at 100% against Devmaxx's 17%. MyDD.ai also leads on rating (5.0 vs 4.3) and monetization model (free with in-app purchases vs subscription). Devmaxx's advantage is ratings volume (520 vs 5) and update cadence (every 2 weeks vs every 2 months). 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. Devmaxx sells 2 in-app purchases, starting at $8.99 per month and MyDD.ai sells 1 in-app purchase, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
MyDD.ai holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Devmaxx has 520 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 17% of Devmaxx's written reviews are positive against 100% of MyDD.ai's.
Devmaxx ships an update every 2 weeks, MyDD.ai every 2 months. The most recent releases landed on October 14, 2026 and September 29, 2026 respectively.
| Parameter | Devmaxx | MyDD.ai |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (520 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 17.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 520 — better | 5 |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.5 | 15.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 39 MB |
| Age rating | 12+ | 4+ |
| Developer | Arjay McCandless LLC | MyDD.AI LLC |
Customer experience
Devmaxx
MyDD.ai
In-app purchases
Devmaxx
- Monthly Devmaxx Subscription7 Days trial$8.991 Month
- Annual Devmaxx Subscription7 Days trial$59.991 Year
MyDD.ai
- myDD.ai$7.991 Month
