This open-source tool collection offers a wide range of cryptographic, geographic, and scientific calculations. It's designed to assist with in-field mysteries and riddles, but its extensive features make it useful for many non-geocaching tasks.






5+ similar apps compared and reviewed
Puzzle Sidekick is great, but it's not the only option. Explore 5+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.






This open-source tool collection offers a wide range of cryptographic, geographic, and scientific calculations. It's designed to assist with in-field mysteries and riddles, but its extensive features make it useful for many non-geocaching tasks.






This powerful word finder assists with puzzles and games by quickly searching over 400,000 words and phrases. It supports crossword puzzles, multi-word anagrams, blank letters, and includes a built-in dictionary with definitions and synonyms.






Access your local library's catalog from your mobile device. Browse new releases, manage holds, renew borrowed items, and discover upcoming events. Plan your library visits with ease, all from your pocket.


This AI-powered companion app helps Stardew Valley players organize their in-game lives. It offers gift guides, event calendars, relationship tracking, and planning tools for bundles and crops. Enjoy fast, offline access to essential information without ads or wiki redirects.


This app is a comprehensive tool for learning Chinese, offering integrated dictionaries, document reading, and flashcard features. It supports various input methods including handwriting and OCR, with extensive dictionary options and pronunciation guides.