Engage your mind with word association puzzles. Link words together in a pyramid structure, with the ability to connect one word to multiple answers. Challenge yourself or play with friends and family.





123+ iOS apps & games curated and reviewed
Out of 123+ chain of thought 2 apps and games on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 3.7★ (67) | No | Yes | Jul 2026 | |
| 2 | Free | 4.1★ (245) | No | Yes | Aug 2026 | |
| 3 | Free | — | Yes | No | May 2026 | |
| 4 | Free | 5.0★ (4) | No | Yes | Jun 2026 | |
| 5 | Free | — | No | No | May 2026 | |
| 6 | Free | — | No | No | Jul 2026 | |
| 7 | Free | 5.0★ (2) | No | No | Jul 2026 | |
| 8 | Free | 5.0★ (2) | — | No | Jun 2026 |





Engage your mind with word association puzzles. Link words together in a pyramid structure, with the ability to connect one word to multiple answers. Challenge yourself or play with friends and family.





This word association game challenges your mind with clever puzzles. Connect words in a chain without typing, using a simple tap interface. Enjoy multiple play modes and earn achievements.








Engage your mind with a word association puzzle game featuring innovative multi-directional chains. Travel through decades of pop culture trivia, connecting words forward, backward, or both simultaneously. Compete globally and enjoy a challenging yet accessible brain workout.






This app fosters genuine connections by rewarding users for sharing their thoughts. It connects you with others who think similarly, facilitating meaningful conversations without the pressure of likes or follower counts. Share your ideas privately, anonymously, or publicly.


This app helps you cultivate mindfulness by tracking the quality of your thoughts and emotions. It provides insights into your general well-being through simple input and visual charts, encouraging positive mental habits.




This app delivers a single, original idea daily from diverse fields like philosophy and science. Users can choose to 'carry' or 'let go' of the thought, with optional premium features for deeper insights and visualization.


Connect equal numbers in the longest possible chain to achieve higher scores and increase piece values. Strategize your moves carefully to avoid running out of options and aim for increasingly higher number targets.




Run Python 3.14 and large language models entirely on-device with a full-featured IDE. Supports Jupyter-style notebooks, scientific computing libraries, and local AI inference without API keys.






Connect two objects using real-world logic and a sequence of associations. Build a seven-part chain with phrases and icons to bridge the gap between a starting and ending image. Enjoy hundreds of handcrafted levels that test your reasoning skills.






Strategize and place atoms to dominate a game board. Outsmart the AI with thoughtful moves and anticipate your opponent's actions until the final outcome.


Capture, organize, and visualize your thoughts with a mind mapping tool. Branch ideas naturally, search your entire library, and export your thinking as PDFs. Keep your ideas private and offline.