---
title: "Index Sums - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Challenge your mind with Index Sums (Kakurasu), an elegant Japanese number logic puzzle that combines the best of Sudoku and Nonograms!  HOW TO PLAY: • Fill in the grid based on row and column sums • "
---

# Index Sums — United States
> Japanese Number Logic Puzzles

![Index Sums App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/85/d2/5f/85d25f32-4279-f10b-3738-513f81ffe0a6/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [ZORIX](https://apptail.io/developer/zorix-rpujn)
**Category:** Games
**Rating:** 5.0/5 (4 ratings)
**Price:** Free
**Bundle ID:** com.rez.indexsumspuzzle
**Store:** Apple App Store
**Country:** United States
**Version:** 2.0.0 (released 2025-09-28)
**Original Release:** 2025-05-20
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6745894447)
**AppTail Page:** [https://apptail.io/app/index-sums-WjIv/united-states](https://apptail.io/app/index-sums-WjIv/united-states)

## Index Sums Description
Challenge your mind with Index Sums (Kakurasu), an elegant Japanese number logic puzzle that combines the best of Sudoku and Nonograms!

HOW TO PLAY:
• Fill in the grid based on row and column sums
• Use logic to determine which cells should be filled
• Complete the puzzle to reveal a hidden pattern
• No guessing required - pure logic and deduction!

KEY FEATURES:
• Multiple difficulty levels (Easy, Medium, Hard)
• Daily challenges to keep your mind sharp
• Track your progress and statistics
• Beautiful, minimalist design
• Dark mode support
• Offline play capability
• Customizable themes and colors
• Haptic feedback for better interaction

BENEFITS:
• Mental Agility: Challenge your logical thinking and problem-solving skills
• Focus & Concentration: Practice maintaining focus through engaging puzzles
• Pattern Recognition: Develop your ability to spot patterns and make quick decisions
• Stress Relief: A relaxing way to unwind while keeping your mind active
• Daily Challenge: Build a fun routine with daily puzzles
• Progress Tracking: Monitor your improvement over time

GAME MODES:
• Classic Mode: Solve at your own pace
• Daily Puzzles: New challenges every day
• Practice Mode: Learn the basics

FEATURES:
• Intuitive touch controls
• Haptic feedback
• Progress tracking and statistics
• Level progression system
• Share your achievements
• No ads or interruptions
• Regular updates with new features

Whether you're a puzzle enthusiast or looking to improve your logical thinking, Index Sums offers the perfect blend of challenge and satisfaction. Download now and join thousands of players in this addictive number logic puzzle!

## Index Sums Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/22/66/de/2266de20-ed9d-a2f4-9f93-d5217e3d9f1a/05.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c1/ee/30/c1ee3083-edec-a83f-ee1c-05886dba6d08/01.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/1e/b6/8e/1eb68e8e-041f-6dd1-282f-f5f9b694d038/02.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d1/ea/46/d1ea46e0-47ac-04d7-192f-8eb603daaac5/03.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/93/bf/e8/93bfe83e-e9dc-cfa0-001c-57cd89b79a2d/04.png/1242x2688.png)

## Index Sums Rating Breakdown in United States
- 5 stars: 4 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## Index Sums Reviews in United States

### ***** "Nice game and great design"
Nice game and great design
-- Saeid473, 2025-05-24

[View all Index Sums reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)




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## Index Sums Available In
- [United States](https://apptail.io/app/index-sums-WjIv/united-states)
- [Belarus](https://apptail.io/app/index-sums-WjIv/belarus)
- [Germany](https://apptail.io/app/index-sums-WjIv/germany)
- [Dominican Republic](https://apptail.io/app/index-sums-WjIv/dominican-republic)
- [Ghana](https://apptail.io/app/index-sums-WjIv/ghana)
- [Kazakhstan](https://apptail.io/app/index-sums-WjIv/kazakhstan)
- [Sri Lanka](https://apptail.io/app/index-sums-WjIv/sri-lanka)
- [Mauritius](https://apptail.io/app/index-sums-WjIv/mauritius)
- [Malaysia](https://apptail.io/app/index-sums-WjIv/malaysia)
- [Norway](https://apptail.io/app/index-sums-WjIv/norway)
- [Panama](https://apptail.io/app/index-sums-WjIv/panama)
- [Russia](https://apptail.io/app/index-sums-WjIv/russia)
- [Taiwan](https://apptail.io/app/index-sums-WjIv/taiwan)
- [Brunei](https://apptail.io/app/index-sums-WjIv/brunei)
- [Uzbekistan](https://apptail.io/app/index-sums-WjIv/uzbekistan)

---

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