# SumSudoku: Killer Sudoku

> Crossovers with Kakuro flavor

Canonical page: [https://chrome-stats.com/d/com.conceptispuzzles.sumsudoku](https://chrome-stats.com/d/com.conceptispuzzles.sumsudoku)

## Overview

- **ID:** `com.conceptispuzzles.sumsudoku`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Conceptis Ltd.
- **Category:** GAME\_PUZZLE
- **Downloads:** 176,144
- **Rating:** 4.60 / 5 (3,450 ratings)
- **Version:** 3.2.0
- **Last updated:** 2026-03-21
- **First published:** 2018-08-23
- **Publisher country:** IL
- **Size:** 34 MB
- **Data as of:** 2026-09-14
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.conceptispuzzles.sumsudoku)
- **Website:** [https://www.conceptispuzzles.com](https://www.conceptispuzzles.com/)
- **Privacy policy:** [https://www.conceptispuzzles.com/index.aspx?uri=info/doc/1148](https://www.conceptispuzzles.com/index.aspx?uri=info/doc/1148)

## Description

**SumSudoku: Killer Sudoku** is an engaging logic puzzle app that combines the challenge of Sudoku with the numeric sums of Kakuro. Featuring a 9x9 Sudoku grid divided into areas with clues, players fill in numbers 1 to 9 ensuring each row, column, and box contains unique digits and that area sums match given totals. Ideal for puzzle enthusiasts of all skill levels, the game offers over 120 free puzzles plus a new bonus one every week.

The app includes helpful tools like possible sum combinations, pencilmarks, undo/redo, and highlighting conflicts to aid gameplay. With no ads, multiple difficulty settings, progress tracking, dark mode, and Google Drive backup, SumSudoku offers hours of intellectual entertainment and cognitive skill sharpening on smartphones and tablets.

## Rankings

- #169,569 — Overall
- #9 — variation

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.GET_ACCOUNTS`
- `android.permission.INTERNET`
- `com.android.vending.BILLING`
- `com.conceptispuzzles.sumsudoku.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

SumSudoku: Killer Sudoku is praised for its addictive, challenging puzzles without ads and useful gameplay features like sum combinations and pencil marks. Users appreciate the smooth interface and flexible in-app purchases based on difficulty levels. However, many mention the UI's poor contrast and difficult-to-read colors as significant drawbacks. Requests for color customization and reverting UI changes are common. Additionally, the automatic note removal feature and incomplete undo functionality frustrate some users. While free content is adequate initially, several desire more free levels without being pushed to buy additional puzzles.

### Pros

- No ads, providing an uninterrupted gaming experience.
- Challenging and addictive puzzles with a good range of difficulties.
- Helpful features like sum combinations and pencil marks enhance gameplay and logical deduction.
- Smooth interface and user-friendly controls, including long press digit-first input.
- Reasonable and flexible in-app purchase model with add-on packs split by difficulty.

### Cons

- UI issues with poor contrast and hard-to-see colors, especially yellow on beige, making numbers difficult to read.
- No option to customize colors or revert to previous UI themes, causing visibility problems for many users.
- Automatic removal of smaller note numbers in rows or columns after selection disrupts user note-taking, lacking an opt-out setting.
- Undo functionality does not fully account for excluded sum combinations, causing inconsistent game states.
- Limited free puzzles especially at higher difficulties, leading users to feel pressure to purchase more content.

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- [Kakuro Game - Cross Sums](https://chrome-stats.com/d/com.kakurogame.kakuro_final) — 10,672 users, 4.56 / 5
- [Killer Sudoku - Sudoku Puzzles](https://chrome-stats.com/d/free.elemob.classic.sudoku.killer.puzzle.games) — 6,557 users, 4.71 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.conceptispuzzles.sumsudoku)