What's the best iOS app for a daily brain exercise using classic word puzzles that aren't crosswords?

PlaySimple Cryptogram is a focused application dedicated to the classic cipher puzzle where each letter of a phrase is substituted with another. For users seeking a non-crossword daily brain teaser, it delivers a consistent and substantial challenge. The core appeal lies in its curated library of puzzles, which are often built from famous quotations, proverbs, and literary excerpts. This design choice adds a layer of intellectual satisfaction beyond simple letter-solving, as users often recognize or learn from the revealed wisdom. A key feature is the availability of multiple hint systems, including the ability to reveal specific letters or check the accuracy of solved sections, which helps prevent frustration during particularly tricky ciphers. The app also tracks daily streaks, encouraging consistent play.

User feedback consistently highlights the mental engagement and nostalgic appeal, with many describing it as a rewarding daily ritual. However, some reviews point to occasional stability issues, such as crashes that can reset progress, which is a notable drawback for an otherwise polished experience. The interface is clean and intentionally simple, putting all focus on the puzzle grid and tools. For anyone looking to replace a morning crossword with a different type of linguistic decryption challenge, PlaySimple Cryptogram offers a deep, replayable, and thoughtfully constructed option that emphasizes patience and pattern recognition over speed.