# Wormhole Calc — An app of arithmetical

> An app of arithmetical (iPhone/iPad app by Satoshi Horiguchi.)

- Source: https://appshunter.io/ios/app/wormhole-calc/id1487966122 (this page in markdown: same URL + `.md`)
- Developer: [Satoshi Horiguchi](https://appshunter.io/developer/310504293)
- Category: Games, Education, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 7 MB
- Languages: American English, Japanese
- Released: 2019-11-16
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/wormhole-calc/id1487966122/reviews.md

## What is Wormhole Calc?

The rules are simple. Fill in the blanks with numbers from 0 to 9 so that multiplication and division can be completed.
* However, 0 is not entered in the leftmost cell.

Questions are generated each time by the app program.
The positions of the holes are determined at random.
The last 50 questions created are automatically saved, and you can select and play them again later.
Equipped with a memo function, undo and redo, and a lock function for entered numbers, making it easier to organize ideas.
Please try once.


## Version history (last 5 releases)

### 1.1.6 — 2025-11-03

We have updated the app for the latest iOS version.

### 1.1.5 — 2024-05-19

Updated supported OS to iOS 16.0 or later.
Updated the advertising SDK.

### 1.1.4 — 2021-02-25

Updated supported OS to iOS 14.1 or later.
Introduced App Tracking Transparency (ATT), a framework for privacy protection installed from iOS14.

### 1.1.3 — 2020-10-04

Optimized support for iOS 13 or later.

### 1.1.2 — 2020-05-05

Supported iOS was updated to 13.0 or newer.

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## More apps by Satoshi Horiguchi

- [Jottable Flash Cards Lite](https://appshunter.io/ios/app/jottable-flash-cards-lite/id430307300)
- [Jottable Flash Cards](https://appshunter.io/ios/app/jottable-flash-cards/id434517635)
- [Required Mahjong Tiles](https://appshunter.io/ios/app/required-mahjong-tiles/id462211016)
- [VersusHit&Blow](https://appshunter.io/ios/app/versushit-and-blow/id483353017)
- [CrosswordMaker](https://appshunter.io/ios/app/crosswordmaker/id560662309)
- [Mahjong Calc Trainer](https://appshunter.io/ios/app/mahjong-calc-trainer/id600841067)

All apps by Satoshi Horiguchi: https://appshunter.io/developer/310504293

## Related topics

[wormhole calc](https://appshunter.io/ios/topics/wormhole-calc)

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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 2026-05-17.*