# Number Fortress: Quick Math — Race the clock, solve the grid

> Race the clock, solve the grid (iPhone/iPad app by Efe OZTURK.)

- Source: https://appshunter.io/ios/app/number-fortress-quick-math/id6800875357 (this page in markdown: same URL + `.md`)
- Developer: [Efe OZTURK](https://appshunter.io/developer/6794749845)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-08-25
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/number-fortress-quick-math/id6800875357/reviews.md

## What is Number Fortress?

Solve the grid, stop the clock, claim the record. Fill every row and column to hit its target sum, find the final keystone cell, and set your best time under a calm night sky. 100 handcrafted levels, a gentle tutorial, per-level Game Center records, and a ghost replay of the record run. Hints are optional — runs that use them never touch the leaderboard, so the competition stays honest. No ads.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Observer Pouch | $3.99 | one-time |
| Astronomer Pouch | $5.99 | one-time |
| Starter Pouch | $1.99 | one-time |
| Unlimited Hints | $7.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-08-25

No release notes.

## More apps by Efe OZTURK

- [Cannon Kingdom](https://appshunter.io/ios/app/cannon-kingdom/id6794749843)
- [PulseFun: Funny Soundboard](https://appshunter.io/ios/app/pulsefun-funny-soundboard/id6795069418)
- [PantryPilot: Expiry Tracker](https://appshunter.io/ios/app/pantrypilot-expiry-tracker/id6797120946)
- [Harbor Escape: Boat Jam](https://appshunter.io/ios/app/harbor-escape-boat-jam/id6801336526)
- [DoseCove: Pill Reminder](https://appshunter.io/ios/app/dosecove-pill-reminder/id6801336721)

All apps by Efe OZTURK: https://appshunter.io/developer/6794749845

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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 2026-08-29.*