Puzex vs One Letter
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Puzex
Engage your mind with a colorful ball sorting puzzle game. Strategically move balls of the same color onto the same tube to solve over 400 challenging levels. Enjoy a relaxing yet stimulating experience with no time limits or penalties.
- Over 400 brain-challenging levels
- Unlockable picture themes
- Intuitive one-finger controls
- No penalty or time limit
- Offline play supported
- Constantly updated challenges
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Fun, engaging, brain enhancing - All in Sort Colors! Your task is to sort balls of the same color on the same tube. In this exciting colorful ball game, you need to smartly and reasonably use your thinking skills, concentration and strategic execution, to be able to solve problems one by one. Quickly and receive attractive rewards. Coming to Sort Colors, you will have moments of relaxation and fun. Besides, your brain is also stimulated and trained in a natural and easy way. A simple game but extremely attractive! Play with your friends and compete in the game of finding the smartest brain! HOW TO PLAY • Touch any pipe to move the ball to the top of the tube. • The rule is that one ball can only be moved on top of another when they are of the same type, and the pipe that wants to be moved needs enough space. • Only one tube has completely free space. • Match wits with balls - don't get stuck! • Help is available: add pipes or go back to the previous step, or you can start the level over again. FEATURE • More than 400 brain challenging levels, from easy to difficult. • Many interesting picture changing options waiting for you to unlock: colors, animals, fruits, objects, .. extremely unique. • Graphics, sound, effects are diverse, beautiful, bring a pleasant feeling, make you attracted and can't stop playing. • Easy controls with just one finger. • No penalty and time limit: you can play over and over, take a challenge at any time. • Constantly updated with loads of new challenges and more. • All free! Unlock all levels thanks to your own wits. • No INTERNET required - play wherever you are. Sort Colors is a unique puzzle game that's worth a try! You will be able to find joy through interesting brain problems. Colorful balls and many other surprises are waiting to be conquered! Show your wits by passing all of our levels. Let's play with friends to multiply fun, increase difficulty in each challenge! Download and enjoy Sort Colors today!
One Letter
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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?
Screenshots
Verdict
The clearest difference is iOS requirement: Puzex at 12.0 against One Letter's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Puzex ships an update every 3 months, One Letter every 6 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.
| Parameter | Puzex | One Letter |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 65 MB | 10 MB |
| Age rating | 4+ | 9+ |
| Developer | Ha Hoang | Haskins.io ltd |
In-app purchases
Puzex
No in-app purchases
One Letter
No in-app purchases









