❓ Frequently Asked Questions
What does Onn Duo Predictor do?
Enter your cards and your opponents’ visible cards in Duo or Five-Card mode to see hand evaluations, win/tie/loss probabilities, and a suggested action. The app also includes rules, Spot Cheaters examples, and a Deceiver’s Fedora guide.
Does the app work offline or upload my cards?
The calculator, images, and GIFs are bundled with the app and work offline. Card inputs and calculations stay on your device. No account is required. Emailing support requires your usual email connection.
How do I use Fedora mode?
When you know an opponent’s full hand, enable Fedora mode and enter both cards in Duo or all five cards in Five-Card mode. The app compares the entered hands directly instead of estimating unknown cards.
Why can the predicted odds change?
Odds depend on the cards you enter and which opponents are active. Multi-opponent Five-Card calculations use simulation, so estimates can vary. A probability or suggested action does not guarantee a win.
What does Next Round do?
Next Round clears the cards and round details while keeping the number of opponents. Reset starts over with one opponent. Closing and relaunching the app starts a new session.
Can I rotate my device or resize the Mac window?
Yes. The interface adapts to portrait and landscape on iPhone and iPad, and to different window widths on Mac. Scroll to reach additional cards and results in smaller layouts.
Is this an official Crimson Desert app?
No. Onn Duo Predictor is an independent, unofficial companion and is not affiliated with or endorsed by Pearl Abyss. Game names and artwork belong to their respective owners.
📬 Direct Support & Feedback
Have a question, encountered a bug, or want to suggest a new feature? Please describe what happened and what you expected.
Contact Me
Feel free to send an email including your app version, iOS/iPadOS or macOS version, and device model:
onnenquires88@gmail.com