# Isogram Word Buster > Word guessing game with a unique constraint: all letters in a word must be unique. (iPhone/iPad app by John Wright.) - Source: https://appshunter.io/ios/app/isogram-word-buster/id6758104943 (this page in markdown: same URL + `.md`) - Developer: [John Wright](https://appshunter.io/developer/1863757354) - Category: Games, Education, Puzzle, Word - Price: Free - Rating: 4.80/5 from 17 App Store ratings · 24 written reviews indexed - Age rating: 4+ - Requires: iOS 18.1 · 6 MB - Languages: American English - Released: 2026-02-18 - Data updated: 2026-10-06 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/isogram-word-buster/id6758104943/reviews.md ## What is Isogram Word Buster? Title: Word Buster: The Isogram Challenge Description: Think you’re a word master? Step up to the ultimate test of vocabulary and logic! Word Buster isn’t your typical word game. Here, we play by the Isogram Rule: every guess must be a word with no repeating letters. No "Apple," no "Trees," no "Grass." It sounds simple, but it changes the strategy completely! WHY PLAY WORD BUSTER? • The Isogram Edge: Sharpen your brain with a unique constraint that forces you to think deeper about your vocabulary. • Learn While You Play: Curious about a word you just guessed? Tap any word on the board for an instant, high-quality definition from our integrated dictionary. • Daily & Unlimited Play: Solve the official Daily Word alongside players everywhere, or jump into "Keep Playing" mode to sharpen your skills for as long as you want. • Choose Your Difficulty: Are you a "Buster" (7 tries), a "6-Shooter" (6 tries), or a true "Genius" (5 tries)? • Seasonal Themes: Play in style with beautifully crafted themes. From our signature "Autumn" pumpkin palette to "Winter" frosts and "Patriotic" vibes—or create your own custom theme! KEY FEATURES: • Clean, minimalist design for distraction-free play. • Detailed statistics to track your streaks and win distribution. • Universal support for iPhone and iPad. • A "Banned Word" filter to ensure a clean, family-friendly experience. Stop repeating yourself. Start busting words. Download Word Buster today! ## Key features - Isogram word constraint - Integrated dictionary with definitions - Daily and unlimited play modes - Adjustable difficulty levels - Seasonal and custom themes - Detailed statistics tracking ## Recent user reviews (10 of 24) All indexed reviews: https://appshunter.io/ios/app/isogram-word-buster/id6758104943/reviews.md ### 5/5 — Amazing game *2026-04-10, version 1.7.5* This game is truly amazing for the classroom and very educational! I recommend to any teacher or school staff looking for a new fun way to introduce literacy into their classroom! ### 5/5 — Fun! *2026-04-10, version 1.7.5* Very fun and educational game! ### 1/5 — Worst game ever *2026-03-20, version 1.7.5* Worst game I have ever read, the person that made it is garbage ### 5/5 — Great App! *2026-03-15, version 1.7.5* My daughter and I enjoy playing this app together. ### 5/5 — Amazing!! *2026-03-06, version 1.7.5* I honestly really enjoy playing this app, it’s easy to navigate and fun to challenge yourself and friends! ### 5/5 — Sooooo good *2026-03-06, version 1.7.5* So good my wig flew ### 5/5 — Amazing *2026-03-06, version 1.7.5* absolutely amazing creator should get payed for this app better than wordle ### 5/5 — great *2026-03-06, version 1.7.5* i love the themes and how u can change the themes ### 5/5 — Upgrade from Wordle *2026-03-03, version 1.7.5* Love the game. Definitely an upgrade from Wordle in my opinion. ### 5/5 — Great app *2026-03-03, version 1.7.5* Really fun game with many options to improve on already existing word games. Like you are not limited to just 1 game per day! ## Frequently asked questions about Isogram Word Buster ### What is Isogram Word Buster? Isogram Word Buster is a word game where every guess must be a word with no repeating letters. This unique constraint challenges your vocabulary and strategic thinking, offering a fresh take on word puzzles. ### How does the Isogram Rule work? The Isogram Rule means that any word you guess cannot contain any duplicate letters. For example, words like 'apple' or 'banana' are not allowed because they have repeating letters. This forces you to think of words with unique characters. ### Is Isogram Word Buster free to play? Yes, Isogram Word Buster is a free-to-play application. The description indicates no in-app purchases or advertisements, suggesting a completely free experience for users. ### What are the different difficulty levels? The game offers several difficulty levels to suit different players. You can choose to be a 'Buster' with 7 tries, a '6-Shooter' with 6 tries, or a true 'Genius' with only 5 tries to guess the word. ### Can I learn new words while playing? Absolutely. The app features an integrated dictionary that provides high-quality definitions. You can tap any word you guess on the board to instantly learn its meaning, making it an educational experience. ## Version history (last 2 releases) ### 1.7.5 — 2026-03-01 Added a difficulty called RANDOM 5,6,7. You now get the definition of a word you failed to solve. Changed the way sharing a completed word looks. ### 1.7.4 — 2026-02-18 No release notes. ## Apps similar to Isogram Word Buster | App | Rating | Price | Category | | --- | --- | --- | --- | | [Wordward: Daily Word Ladder](https://appshunter.io/ios/app/wordward-daily-word-ladder/id6779828860) | — | Free | Games | | [Number Pair : Match Ten Puzzle](https://appshunter.io/ios/app/number-pair-match-ten-puzzle/id6788234863) | — | Free | Games | | [Word Busters - Letter Sort](https://appshunter.io/ios/app/word-busters-letter-sort/id6759317747) | — | Free | Games | | [Nose Picking - Puzzle Game](https://appshunter.io/ios/app/nose-picking-puzzle-game/id1509026912) | 5.0 (5) | Free | Games | | [Word Search Explorer - Puzzel](https://appshunter.io/ios/app/word-search-explorer-puzzel/id6752920897) | — | Free | Games | | [Pop Lock Arcade](https://appshunter.io/ios/app/pop-lock-arcade/id6472943334) | 3.0 (1) | Free | Games | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-06.*