Comparison

CodeHorizon vs HackUDC OS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Algorithm contest notifications
  • Support for multiple coding sites
  • Customizable notification timings
  • View contest information pages
  • Direct access to registration pages
Features
Read 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.

About

HackUDC OS

Features
Read 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

CodeHorizon4 screens
HackUDC OS4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 9 level
CodeHorizon versus HackUDC OS: the parameters behind the verdict, then further details
ParameterCodeHorizonHackUDC OS
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS7.0 — better16.4
Further details — not scored
Size1 MB70 MB
Age rating4+4+
DeveloperChintan GhateGPUL

In-app purchases

None

CodeHorizon

No in-app purchases

None

HackUDC OS

No in-app purchases

Questions

Is CodeHorizon free?
CodeHorizon is free to download, with no in-app purchases.
Is HackUDC OS free?
HackUDC OS is free to download, with no in-app purchases.
Do CodeHorizon or HackUDC OS have ads?
Neither CodeHorizon nor HackUDC OS shows ads.
Which is updated more often, CodeHorizon or HackUDC OS?
CodeHorizon ships an update every 3 weeks, and HackUDC OS every 2 weeks. Most recently, CodeHorizon was updated on October 17, 2026 and HackUDC OS on October 28, 2026.

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