Corq vs Codon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Corq
Discover campus events, explore student organizations, and stay connected to campus life. Easily find communities and access your event pass for seamless check-ins.
- Discover campus events
- Explore student organizations
- Access Event Pass QR code
- Save Event Pass to digital wallet
- Stay connected to campus life
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Corq — Your Campus, Connected Discover what’s happening on campus, explore student organizations, and stay connected to the experiences that matter most—all from your phone. Powered by Engage, Corq makes it easy for students to find events, join organizations, and participate in campus life. What you can do with Corq * Discover campus events happening today, this week, or anytime. * Explore clubs and organizations to find communities that match your interests. * Access your Event Pass QR code instantly from the home screen. * Save your Event Pass to your digital wallet for fast, seamless check-ins. Stay in the loop. Find your community. Show up with confidence. Welcome to Corq.
Codon
Master biology from molecules to ecosystems with a comprehensive, offline curriculum. Explore 100 lessons, researcher profiles, and landmark experiments. Learn mechanisms and track progress with spaced repetition and interactive quizzes.
- Offline biology curriculum
- 100 lessons with narration
- Researcher profiles
- Interactive quizzes with explanations
- Spaced repetition learning
- Offline access, no account needed
- Home screen widgets
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A four-year biology curriculum, offline, with no account and no network. Codon covers what an introductory sequence and the first two years of a degree teach: molecules and cells first, then inheritance and molecular biology, then evolution, diversity and ecology, then whole organisms and physiology. WHAT IS INSIDE 100 lessons across four years, each 15 to 25 minutes, with on-device narration 60 researcher profiles, from Mendel and Darwin to McClintock and Doudna 735 glossary terms, cross-linked to the lessons that use them 20 quizzes with worked explanations for every answer 18 landmark experiments reconstructed: Meselson and Stahl, Hershey and Chase, Luria and Delbruck Spaced repetition that schedules the terms you keep forgetting Bookmarks and notes on any lesson, profile or term Three Home Screen widgets: a quote, a term and a figure, each changing daily HOW IT TEACHES The course teaches mechanisms rather than vocabulary. Where a textbook says respiration yields 38 ATP, this one gives the real figure of roughly 30 to 32 and explains why the number moved. Where the field is unsettled, such as the origin of eukaryotes or the tempo of speciation, the lesson gives the competing accounts and who holds them. FREE AND PAID The first ten lessons are free. One purchase of $9.99 unlocks the remaining 90 and everything else, permanently. There is no subscription, there are no ads, and there is no account to create. Family Sharing is supported. OFFLINE BY DESIGN The app makes no network connections. Every lesson, profile, glossary entry, quiz and case study is bundled in the download, so the whole course works in airplane mode. Nothing you read or write here leaves your device.
Screenshots
Verdict
The clearest difference is rating: Codon at 5.0 against Corq's 2.7. Codon also leads on update cadence (every 10 days vs every 3 weeks). Corq's advantage is in-app purchases (none vs 1) and ratings volume (217 vs 1). 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. Codon sells 1 one-off in-app purchase. Corq asks for nothing beyond the download.
Codon holds the better App Store score, 5.0 against 2.7. That said, the two scores are not equally well evidenced: Corq has 217 ratings behind it against 1, so its average is the more settled of the two.
Corq ships an update every 3 weeks, Codon every 10 days. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.
| Parameter | Corq | Codon |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (217 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 20.5% of reviews | — |
| Number of ratings | 217 — better | 1 |
| Update frequency | Every 3 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 21 MB | 5 MB |
| Age rating | 4+ | 12+ |
| Developer | Campus Labs, Inc. | OMAR DANIEL GRAZIANO |
Customer experience
Corq
Codon
Bugs and requests
Corq
Reported bugs
61 issues- App takes too long to load
- App does not load at all
- App is unusable after update
- New UI is harder to use
- Cannot find event times
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- Missed university events due to UI
- Events not showing up
- Dates are messed up
- Shows past events when filtered
- Only a fraction of events displayed
- Cannot check 'my events'
- Difficult to find future events
- Manually select date range
- Events are large
- Filters not working correctly
- Cannot search upcoming events more than a day in advance
- Does not show events more than a few days in advance
- Cannot view times without clicking
- Upcoming events from years ago
- Events displayed as blocky images
- Stock photos used for events
- Cannot see 'your events' tab
- App is less functional
- Errors constantly
- Subscribed to random calendars without permission
- Malware
- Logged out frequently
- Cannot log back in after being logged out
- App won't show campus events
- App is super slow
- Event info is incorrect
- Deceitful event listings
- App is glitchy
- App crashes easily
- App won't start
- App crashes after 2 minutes
- Unexpected error code 6001 2500
- App crashes when opening
- App crashes when trying to type school
- App black screens and exits
- App keeps crashing
- Login feature not fully functional
- Event not listed
- Cannot sign in
- Error message on login/refresh
- No permission to see page
- App freezes on login
- App takes too long to load
- App won't load
- App crashes when there are many events
- Hard to sign up when app crashes
- App is broken
- University not found when searching
- Scrolling resets to the beginning
- App requires update but no update available
- App fails every time on entry
- App is buggy
- App crashes easily
- App won't let me log in
- Blank page on login
- App reloads at the top of the page when scrolling
Requested features
7 requests- Revert UI to old version
- Add link to Google Calendar
- Background notifications for events
- Allow organizations to add events
- Implement RSVP and check-in features
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- Allow organizations to see attendee contact info
- Add ability to check lead credit status
Codon
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Corq
No in-app purchases
Codon
- Codon Full Access$9.99









