CodeHorizon vs HackUDC OS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CodeHorizon
Stay updated on algorithm contests across multiple coding platforms. Get timely notifications for upcoming and live events, with customizable alert timings. Access contest information and registration pages directly within the app.
- Algorithm contest notifications
- Support for multiple coding sites
- Customizable notification timings
- View contest information pages
- Direct access to registration pages
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An app to notify Coders about the upcoming and live Algorithm Contests on various sites. Features : - View information for contests on these sites : CodeChef, CodeForces, HackerEarth, HackerRank, Topcoder, and few other sites. - Set different notification timings for contests on different sites. - View the registration or information pages for the contests.
HackUDC OS
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hackOS is the official app for the HackUDC hackathon. It serves both participants and event staff through a single adaptive interface. For Participants: - View the event schedule with day-by-day timeline, and configure per-session reminders - Track your team's judging queue position, ETA, and room assignment in real time - Access your entrance ticket and badge QR codes, and add them to Apple Wallet - Receive push notifications for queue calls, schedule changes, and announcements - Manage your account and notification preferences For Staff/Operators: - Scan QR codes for event accreditation (check-in), badge assignment, and badge replacement - Track attendee presence with door in/out scanning - Scan meals and recordable activities with first-serving/repeat detection - Manage judging queues: call teams, and review and configure presentation teams - View a searchable roster of all attendees with real-time status
Screenshots
Verdict
The clearest difference is iOS requirement: CodeHorizon at 7.0 against HackUDC OS's 16.4. On price, update cadence, ads and in-app purchases 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.
CodeHorizon ships an update every 3 weeks, HackUDC OS every 2 weeks. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.
| Parameter | CodeHorizon | HackUDC OS |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 7.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 1 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Chintan Ghate | GPUL |
In-app purchases
CodeHorizon
No in-app purchases
HackUDC OS
No in-app purchases
