LetterGrid vs SumX
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
LetterGrid
A daily word puzzle game where players slide rows and columns on a 4x4 grid to form words. Each day presents a new challenge with a limited number of moves to maximize your score and maintain your streak.
- Daily sliding word puzzles
- 4x4 grid gameplay
- Limited move challenges
- Score building and streaks
- Simple to learn, strategic to master
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LetterGrid is a fresh daily word puzzle where you slide rows and columns to create words on a 4×4 grid. Every move reshapes the board and random letters replace old ones—so think carefully! With only 25 moves, how many points can you score on the daily puzzle? Each day brings you a new handcrafted challenge. Slide the letters, find words, build your score, and keep your streak alive! Whether you like relaxing puzzles or clever strategic play, LetterGrid is simple to learn and satisfying to master. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://games.foley.page/lettergrid/privacy/
SumX
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SumX: The Daily Math Grid & Brain Training Sharpen your mind with SumX, the addictive daily math puzzle designed for speed and logic. If you love Sudoku, Wordle, or mental math challenges, SumX is your new morning ritual. Find the target number, spot the patterns, and climb the leaderboard. [HOW TO PLAY] The Target: Every grid has a unique target number. Build Your Solution: Tap numbers and operators (+ or ×) to reach the goal. Beat the Clock: You have 3 minutes! How many solutions can you find? Speed Bonus: Earn extra points for finishing early with our time-saver bonus. [WHY SUMX?] Daily Mental Workout: A fresh math grid every day to keep your brain agile. Private Groups: Create a group, share your Group Code, and compete on a private leaderboard with friends and family. Analyze & Learn: Missed a solution? Use "Show Missing" to see overlooked patterns in red. Track Progress: Detailed stats to monitor your arithmetic speed and cognitive growth. [PERFECT FOR] Fans of logic puzzles and number games. Students practicing mental math and multiplication. Adults looking for a quick, 3-minute brain teaser.
Screenshots
Verdict
The clearest difference is in-app purchases: SumX at none against LetterGrid's 1. SumX also leads on update cadence (every 5 days vs every 2 weeks). LetterGrid's advantage is ads (none vs shown). On price, device support and iOS requirement 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. LetterGrid sells 1 in-app purchase, starting at $0.99 per month. SumX asks for nothing beyond the download.
LetterGrid ships an update every 2 weeks, SumX every 5 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.
| Parameter | LetterGrid | SumX |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 weeks | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 368 MB | 41 MB |
| Age rating | 12+ | 4+ |
| Developer | Bradford Foley | SumX Games LTD. |
In-app purchases
LetterGrid
- Subscription$0.991 Month
SumX
No in-app purchases
