Devmaxx vs DataExpert / TechExpert
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 learn and practice essential skills for interviews and career growth. It offers clear explanations, linked resources, progress tracking, and a community forum for collaborative learning.
- Daily system design questions
- Clear explanations and answer breakdowns
- Linked learning resources
- Access to previous questions
- Progress tracking
- Private developer community
- Pod-based learning and competition
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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 • Join your friends in pods and battle against other pods while learning system design. 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/
DataExpert / TechExpert
This platform offers a space for students to connect with peers, access educational videos, and manage academic tasks. It provides access to premium learning programs through various subscription options.
- Join student communities
- Watch educational videos
- Connect with other students
- Check homework assignments
- Receive notifications
- Access premium programs
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DataExpert / TechExpert native app allows you to join communities, watch videos, connect with other students, check on homework, get notifications and much more! SUBSCRIPTIONS Some academies offer premium programs as auto-renewable subscriptions: • All-Access DataExpert.io Subscription — $119.99 per 1 month • TCI Pro Subscription (Monthly) — $59.99 per 1 month, with a 3-day free trial • TCI Pro Subscription (Annual) — $599.99 per 1 year Payment will be charged to your Apple ID account at confirmation of purchase (or after the free trial, where offered). Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.dataexpert.io/privacy
Screenshots
Verdict
The clearest difference is rating: DataExpert / TechExpert at 5.0 against Devmaxx's 4.3. DataExpert / TechExpert also leads on monetization model (free with in-app purchases vs subscription). Devmaxx's advantage is ratings volume (541 vs 1) and update cadence (every 2 weeks vs every 3 weeks). 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 DataExpert / TechExpert sells 3 in-app purchases, starting at $59.99 per month. Whichever you choose, the download price is not the number that matters.
DataExpert / TechExpert holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Devmaxx has 541 ratings behind it against 1, so its average is the more settled of the two.
Devmaxx ships an update every 2 weeks, DataExpert / TechExpert every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Devmaxx | DataExpert / TechExpert |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (541 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 17.5% of reviews | — |
| Number of ratings | 541 — better | 1 |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.5 | 17.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 66 MB |
| Age rating | 12+ | 4+ |
| Developer | Arjay McCandless LLC | TechExpert.io |
Customer experience
Devmaxx
DataExpert / TechExpert
In-app purchases
Devmaxx
- Monthly Devmaxx Subscription7 Days trial$8.991 Month
- Annual Devmaxx Subscription7 Days trial$59.991 Year
DataExpert / TechExpert
- TCI Pro Monthly3 Days trial$59.991 Month
- All-Access Monthly$119.991 Month
- TCI Pro Annual3 Days trial$599.991 Year
