Poker Odds Teacher is a comprehensive app developed by PokerCruncher LLC for iPhone users. This app aims to teach players how to estimate the odds for various Texas Hold'em scenarios in real-time without the need for external tools or calculators. With no in-app purchases or fees, users can enjoy the full version of the app without any additional costs.

The app emphasizes understanding the odds rather than memorization, making it a valuable resource for players looking to improve their poker skills. It provides a general method for estimating the odds, focusing on three simple steps. Users are guided through counting their outs, considering their opponent's counter-outs, and combining the two to arrive at a reliable odds estimate.

Poker Odds Teacher includes around 20 pre-flop and post-flop scenarios for users to practice the method on. Each scenario is broken down into three steps, with informative help buttons available for further guidance. While the app covers a good cross-section of common and important situations, it is designed to teach a general method rather than specific scenarios. By mastering the method for representative scenarios, users can apply their knowledge to similar situations easily.

Please note that Poker Odds Teacher requires a strong understanding of basic math operations, as users will need to perform calculations in their head. The app provides a "Math" help button to assist users in performing these calculations.

Overall, Poker Odds Teacher is a challenging yet valuable app for players looking to improve their understanding of the odds in Texas Hold'em. It offers continual improvement and does not require any additional purchases or fees.