# HARDSUM — Daily math logic puzzle

> Daily math logic puzzle (iPhone/iPad app by Black Lotus Development Agency Ltd.)

- Source: https://appshunter.io/ios/app/hardsum/id6787540780 (this page in markdown: same URL + `.md`)
- Developer: [Black Lotus Development Agency Ltd](https://appshunter.io/developer/1843846184)
- Category: Games, Puzzle, Trivia
- Price: Free
- Age rating: 12+
- Requires: iOS 15.1 · 40 MB
- Languages: American English
- Released: 2026-07-10
- Data updated: 2026-08-25
- User reviews in markdown: https://appshunter.io/ios/app/hardsum/id6787540780/reviews.md

## What is HARDSUM?

HARDSUM is a fast, satisfying puzzle game that turns simple addition into a true test of logic.
Each challenge gives you a 3x3 grid. Every cell contains multiple number options, but only one choice in each cell leads to the correct solution. Your goal is to find the right combination so every row and column matches the target sum.
HARDSUM is easy to understand in seconds, but every puzzle pushes your focus, pattern recognition, and reasoning a little further.


## Version history (last 4 releases)

### 1.0.3 — 2026-08-19

Haptics, notifications and performance improvements.

### 1.0.2 — 2026-07-28

iOS 26 native tabs integration, bug fixes and performance improvements.

### 1.0.1 — 2026-07-19

Minor bug fixes.

### 1.0 — 2026-07-11

No release notes.

## More apps by Black Lotus Development Agency Ltd

- [EE Wellness Hub](https://appshunter.io/ios/app/ee-wellness-hub/id6753587003)
- [TrackLearn](https://appshunter.io/ios/app/tracklearn/id6756925183)
- [RentMate](https://appshunter.io/ios/app/rentmate/id6765994501)
- [TUGG.IO](https://appshunter.io/ios/app/tuggio/id6782997872)
- [Initlang](https://appshunter.io/ios/app/initlang/id6796312379)

All apps by Black Lotus Development Agency Ltd: https://appshunter.io/developer/1843846184

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*