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App Store Apps > Games > Puzzle Games > One Digit Field
One Digit Field icon

One Digit Field

by Tomoyoshi Natsui · Games · Free
On the App Store since December 2020 · Data updated 2026-10-31

One Digit Field is made and published by Tomoyoshi Natsui. AppBrain is an independent app data site and isn't affiliated with Tomoyoshi Natsui. The app name, icon, screenshots and description belong to Tomoyoshi Natsui and are shown as published on the App Store.

AppBrain's verdict

Last updated
October 7, 2026
Size
87.0 MB
Official page on the App Store

User feedback

Ratings and reviews on the App Store

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Store listing

By Tomoyoshi Natsui, from the App Store
One Digit Field Screenshot 1 of 5
One Digit Field Screenshot 2 of 5
One Digit Field Screenshot 3 of 5
One Digit Field Screenshot 4 of 5
One Digit Field Screenshot 5 of 5
Screenshots by Tomoyoshi Natsui, from the the App Store listing
Description by Tomoyoshi Natsui Written by the developer, not by AppBrain. Click to read.
One Digit Field is a puzzle game where you put numbers one by one in a 9x9 square while thinking carefully. The rules of the game are very simple, and the goal is to put numbers in all the squares according to the following placement rules.

・ 1 to 9 are lined up in one vertical row
・ 1 to 9 are lined up in a horizontal row
・ 1 to 9 should be placed for each 3x3 block

This rule is similar to the puzzle games SUDOKU and Number Place, which are popular all over the world, regardless of age or gender, so you may be familiar with it. As a developer, I also love SUDOKU, and I think it's a perfect game for a short wait, and I enjoy several apps of the same type.

One Digit Field is developed with a focus on "playability" and "multiplay". Of course, regarding the quality of the problem, I think we have prepared a so-called "good question". There are 7 difficulty levels, and each level has 200 stages, so we have prepared a total of 1400 stages. Furthermore, you can add 100 stages for 1 dollar by In-App Purchase (Non-Consumable). In addition, there is a daily stage, so you can enjoy it forever.

First of all, please enjoy this app, and discover the deep fun of SUDOKU.

*The music playing in this app is the music published in "Music Atelier Amacha" (https://amachamusic.chagasi.com).

*From version 1.1, the automatic deletion function for digit memos has been added. For example, if you enter "5" at 9 times and use them up, the digit memo of "5" left on the board is unnecessary and annoying, so you had to manually delete them one by one. The automatic deletion function for digit memos deletes digit memos that are no longer needed in such cases.

*In-App Purchase Information
You can add 100 stages for 1 dollar by In-App Purchase (Non-Consumable).

*In-App Purchase Restoration
When reinstalling this application, you can restore the above purchase by logging in with the same Apple ID as purchased and tap 'Restore Added Stages' at Setting view.

*Notes of In-App Purchase
In-app billing will be charged via iTunes account.

*Privacy Policy and Terms of Use
http://hrathnir.info/index.php/page/iPhoneAppSupport
Official page on the App Store

Safety and technology

Found in the app by AppBrain
Price
Free
App size
87.0 MB
Content rating
Everyone

Technologies used by One Digit Field

Releases

Updates seen on the App Store
Version
4.6
Launched
December 2020

No changelog data

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About the app and developer

About One Digit Field

One Digit Field is a games app developed by Tomoyoshi Natsui.

User Ratings

The app has no ratings yet.

App Information

One Digit Field is freely available from the App Store. The app size is 87.03 MB. The latest version available is 4.6. The last update was on October 7, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on the App Store since December 2020.

Developer information for Tomoyoshi Natsui

Tomoyoshi Natsui

Address:

Share One Digit Field

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Overview Alternatives Reviews Rankings Technology
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