# One Letter — One letter at a time > One letter at a time (iPhone/iPad app by Haskins.io ltd.) - Source: https://appshunter.io/ios/app/one-letter/id1596356582 (this page in markdown: same URL + `.md`) - Developer: [Haskins.io ltd](https://appshunter.io/developer/1519995547) - Category: Games, Puzzle, Word - Price: Free - Age rating: 9+ - Requires: iOS 14.0 · 10 MB - Languages: English - Released: 2021-11-30 - Data updated: 2026-05-16 - User reviews in markdown: https://appshunter.io/ios/app/one-letter/id1596356582/reviews.md ## What is One Letter? One Letter is a word game in which you make words by only changing One Letter of the current word. There are four game formats. Chains ------ The idea behind Chains is that you start with a word, then you have to keep changing a single letter making a new word until you can't make any more. For example the starting word is START: start -> stare -> spare -> spore -> sport -> etc Variations ---------- Variations follows a similar patter to Chains, you have to change a single letter to make a new word. The difference here is that all the words must be made from the starting word. For example you start with the word START. From start you can make: stare, smart, stark, scart Additions --------- With additions you are presented with a 3 letter word, and you have to make as many four letter words as you can by adding One Letter. You can place the letter anywhere in the word. For example starting with the word POT: spot, pout, plot, etc Ladders ------- Giving a starting word can you change it to the finish word one changing a single letter at a time? ## Version history (last 5 releases) ### 1.1.3 — 2023-09-20 UI has been tweaked to handle the island notch. ### 1.1.2 — 2023-09-13 I'm being told that 10 seconds is not enough to think about the longer words. So to celebrate the launch of my new game Grid Shift (check it out!!) I've made some adjustments to the timers. Now you get: 4 letter word = 10 (yep this is the same) 5 letter word = 15 6 letter word = 20 7 letter word = 25 8 letter word = 30 ### 1.1.1 — 2023-07-18 Maintenance release ### 1.1 — 2022-01-19 What's new in v1.1 Along with some tweaks, and improvements there are two new game formats. Additions With additions you are presented with a 3 letter word, and you have to make as many four letter words as you can by adding One Letter. You can place the letter anywhere in the word. Ladders Giving a starting word can you change it to the finish word one changing a single letter at a time? ### 1.0.1 — 2021-12-06 1.0.1 A maintenance release with UI improvements, and general tweaks ## Apps similar to One Letter | App | Rating | Price | Category | | --- | --- | --- | --- | | [Nonogram Color:Picture Cross](https://appshunter.io/ios/app/nonogram-colorpicture-cross/id1543830420) | 4.7 (1,224) | Free | Games | | [Number Search Puzzle](https://appshunter.io/ios/app/number-search-puzzle/id1546175620) | 4.1 (36) | Free | Games | | [Labyrinths of World 14 – F2P](https://appshunter.io/ios/app/labyrinths-of-world-14-f2p/id1587141039) | 3.8 (9) | Free | Games | | [The Big Crossword](https://appshunter.io/ios/app/the-big-crossword/id1488394476) | 4.1 (42) | Free | Games | | [Word Mind - Word Challenge](https://appshunter.io/ios/app/word-mind-word-challenge/id1623565989) | 4.4 (8) | Free | Games | | [Find Out Hidden Objects](https://appshunter.io/ios/app/find-out-hidden-objects/id933511510) | 5.0 (2) | Free | Games | ## More apps by Haskins.io ltd - [Ends](https://appshunter.io/ios/app/ends/id1519994705) - [Ends+](https://appshunter.io/ios/app/ends-plus/id6444284010) - [Grid Shift](https://appshunter.io/ios/app/grid-shift/id6458593141) All apps by Haskins.io ltd: https://appshunter.io/developer/1519995547 --- *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 2026-05-16.*