Value Calc
Kelly & True Price Calculator
Free · Designed for iPad. Not verified for macOS.
Value Calc helps sports bettors and prediction market traders make smarter staking decisions using rigorous mathematical methods. It is a free, simple calculator with no tracking or login, and includes a few links for more information or future research. All serious pro bettors have those functionalities baked directly into their automated models, but it can be handy for quick calculations on the fly and as an educational starting point for curious, math-savvy people interested in the world of betting and probabilities.
KELLY CRITERION
Calculate your optimal bet size. Enter your estimated win probability and the odds offered — the Kelly Criterion formula calculates exactly what fraction of your bankroll to stake to maximise long-term capital growth. Supports full, half, and quarter Kelly to manage variance.
TRUE PRICE
Remove the bookmaker's margin from any set of odds to reveal the true underlying probabilities. Supports 2 to 20 outcomes. Choose between the Optimal method for accurate results or the Normal method for comparison.
ODDS CONVERTER
Instantly convert between decimal, fractional, American moneyline, and implied probability (prediction market) formats.
KEY FEATURES
• All calculations run locally — no internet connection required
• No accounts, no tracking, no ads
• Inputs saved automatically between sessions
• Dark, light, and auto themes
• Explanations, math, and examples behind every calculator
• Source links for future reading or study of the subjects covered
This app is a calculation tool only. It does not facilitate, encourage, or enable gambling. Please gamble responsibly.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A few little text tweaks and the Auto Theme bug was corrected.
The developer, Lukas Kloucek, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Lukas Kloucek
- Size
- 28 MB
- Category
- Finance
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Lukas Kloucek