HackIllinois vs Zetamac Arithmetic Practice
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HackIllinois
This app enhances the hackathon experience by providing event schedules, point-earning opportunities through QR scans and duels, and a shop for redeeming prizes. Users can track their progress, view rankings, and manage check-ins for food and events.
- Event schedule and details
- Point system via QR scans and duels
- Prize redemption in Point Shop
- Personal progress and rank tracking
- Event check-in functionality
- Countdown timer for hacking
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Download the official HackIllinois 2026 app for a complete in-person hackathon experience! With our app, you can: - See how much time you have left to hack! - View the time, location, and other details for all of our events. - Scan QR codes at events to obtain points! - Play duels against other members for points. - Get checked in by staff for food and other events. - Redeem points for merchandise and raffle prizes through our newly improved Point Shop! - View your rank, points, and other personal information. - and more!
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.
Screenshots
Verdict
HackIllinois and Zetamac Arithmetic Practice both sit at 4.7 stars, but that hides the real split: 100% of HackIllinois's written reviews are positive against 82% of Zetamac Arithmetic Practice's. HackIllinois also leads on iOS requirement (15.1 vs 17.5). On price, rating, ratings volume and update cadence 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.7 for HackIllinois against 4.7 for Zetamac Arithmetic Practice. Both are backed by a comparable volume of ratings — 32 and 18 respectively. Written reviews are what separate them: 100% of HackIllinois's written reviews are positive against 82% of Zetamac Arithmetic Practice's.
Both ship on a similar rhythm, roughly daily. The most recent releases landed on June 5, 2026 and September 27, 2026 respectively.
| Parameter | HackIllinois | Zetamac Arithmetic Practice |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (32 ratings) | 4.7 (18 ratings) |
| Positive reviews | 100.0% of reviews — better | 82.4% of reviews |
| Number of ratings | 32 — better | 18 |
| Update frequency | Daily | Daily |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.5 |
| Further details — not scored | ||
| Size | 46 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | ACM UIUC | Joseph Ma |
Customer experience
HackIllinois
Zetamac Arithmetic Practice
In-app purchases
HackIllinois
No in-app purchases
Zetamac Arithmetic Practice
No in-app purchases
Questions
Is HackIllinois free?
Is Zetamac Arithmetic Practice free?
Which has better reviews, HackIllinois or Zetamac Arithmetic Practice?
Do HackIllinois or Zetamac Arithmetic Practice have ads?
Which is updated more often, HackIllinois or Zetamac Arithmetic Practice?
Other comparisons
