# Chalk & Sum

> Chalk & Sum is a calm number puzzle game for iPhone by indie developer Kartik Kaushik. Each level shows a target number in chalk and a few magnet tiles; the player swaps the tiles into any order, places + − × ÷ (and brackets on later levels) between them, and makes the expression equal the target. Free on the App Store from 23 October 2026, with optional ads, a one-time Remove Ads purchase and optional coin packs.

## Key facts

- Name: Chalk & Sum (also written "Chalk and Sum")
- Genre: puzzle, math, number puzzle, brain game (similar to the "make 24" / 24 game family)
- Platform: iPhone, iOS 26 or later; open-book layout on iPhone Duo
- Price: free, with ads between levels; Remove Ads is a one-time in-app purchase; coin packs buy extra doodles
- Age rating: 4+
- Release date: 23 October 2026
- Developer: Kartik Kaushik (contact: kartik14704@gmail.com)
- App Store: https://apps.apple.com/app/id6817104799

## Features

- 60 hand-made levels across 6 chapters, many with more than one answer
- A daily puzzle with a gentle streak that forgives one missed day a week (opens after level 5)
- Relax mode: endless generated puzzles at your own pace
- Hand-drawn chalk doodles to collect and arrange on your board
- Hints in three steps: which operators, then the number order, then the full answer; 3 free hints a day
- No timers, no lives, no pressure
- Game Center achievements and iCloud sync

## Pages

- [Chalk & Sum home and support](https://kartikkaushikk.github.io/): what the game is, screenshots, how to play, FAQ and support email
- [Privacy Policy](https://kartikkaushikk.github.io/privacy.html): no accounts, progress stays on device and in the player's iCloud, ads by Google AdMob without App Tracking Transparency