Zetamac Arithmetic Practice vs Devmaxx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zetamac Arithmetic Practice
This app offers mental math practice tailored for quantitative finance professionals. It focuses on improving calculation speed and accuracy for complex numerical problems.
- Mental math practice
- Quantitative finance focus
- Calculation speed improvement
- Accuracy enhancement
- Numerical problem solving
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Zetamac - A mental math practice app used in the Quantitative Finance world.
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
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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 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/
Screenshots
Verdict
The clearest difference is review sentiment: Zetamac Arithmetic Practice at 83% against Devmaxx's 17%. Zetamac Arithmetic Practice also leads on in-app purchases (none vs 2) and update cadence (daily vs every 2 weeks). Devmaxx's advantage is ratings volume (520 vs 18). 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. Devmaxx sells 2 in-app purchases, starting at $8.99 per month. Zetamac Arithmetic Practice asks for nothing beyond the download.
Zetamac Arithmetic Practice holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Devmaxx has 520 ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 83% of Zetamac Arithmetic Practice's written reviews are positive against 17% of Devmaxx's.
Zetamac Arithmetic Practice ships an update daily, Devmaxx every 2 weeks. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.
| Parameter | Zetamac Arithmetic Practice | Devmaxx |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (18 ratings) — better | 4.3 (520 ratings) |
| Positive reviews | 83.3% of reviews — better | 17.0% of reviews |
| Number of ratings | 18 | 520 — better |
| Update frequency | Daily — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.5 | 17.5 |
| Further details — not scored | ||
| Size | 1 MB | 29 MB |
| Age rating | 4+ | 12+ |
| Developer | Joseph Ma | Arjay McCandless LLC |
Customer experience
Zetamac Arithmetic Practice
Devmaxx
In-app purchases
Zetamac Arithmetic Practice
No in-app purchases
Devmaxx
- Monthly Devmaxx Subscription7 Days trial$8.991 Month
- Annual Devmaxx Subscription7 Days trial$59.991 Year
Questions
Is Zetamac Arithmetic Practice free?
Is Devmaxx free?
Which has better reviews, Zetamac Arithmetic Practice or Devmaxx?
Do Zetamac Arithmetic Practice or Devmaxx have ads?
Which is updated more often, Zetamac Arithmetic Practice or Devmaxx?
Other comparisons
