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
Read full descriptionHide full description
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
Read full descriptionHide full description
hackOS is the official HackUDC app: the whole hackathon in your pocket, whether you're here to participate or to organize. FOR PARTICIPANTS • Schedule: the day-by-day program, with search and reminders. • Judging queue: your team's position, estimated wait and assigned room, in real time. • Live Activities: queue, deadlines, meals and your badge on the Lock Screen, the Dynamic Island and Apple Watch. • Badge and entry: your QR codes at hand, and saved to Apple Wallet. • Projects: create and edit your project, add photos, invite your team, read each challenge's briefing and submit before the deadline. • Networking: scan badges and sponsor booths to save people and companies to your Contacts. Edit your bio, links, CV and photo. • Notifications: judging turns, schedule changes and announcements, with a dedicated inbox and full control over reminders. • No signal, no problem: the schedule and your data are stored securely on your device. FOR STAFF AND ORGANIZERS • Check-in: scan badges, assign or replace them. • Presence: track attendees' entries and exits. • Meals and activities: log by scanning and instantly detect duplicates. • Judging queues: call teams, see who is presenting and manage their participation. • Attendees: search the full list with their real-time status. • NFC scanning or manual entry, even offline.
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 17, 2026 and October 28, 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 | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Chintan Ghate | GPUL |
In-app purchases
CodeHorizon
No in-app purchases
HackUDC OS
No in-app purchases
Questions
Is CodeHorizon free?
Is HackUDC OS free?
Do CodeHorizon or HackUDC OS have ads?
Which is updated more often, CodeHorizon or HackUDC OS?
Other comparisons















