# Fill & Number

> One-stroke drawing puzzle with numerical sequence rules and over 1000 stages. (iPhone/iPad app by Strawberry Gohan.)

- Source: https://appshunter.io/ios/app/fill-and-number/id6754808689 (this page in markdown: same URL + `.md`)
- Developer: [Strawberry Gohan](https://appshunter.io/developer/425100193)
- Category: Games, Education, Puzzle, Trivia
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 19 written reviews indexed
- Age rating: 17+
- Requires: iOS 15.0 · 108 MB
- Languages: American English, Japanese
- Released: 2025-12-18
- Data updated: 2026-08-25
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/fill-and-number/id6754808689/reviews.md

## What is Fill & Number?

The classic one-stroke puzzle has dramatically evolved with the simple addition of a numerical rule!

Introducing a revolutionary puzzle game for everyone seeking a truly intellectual challenge.

This game takes the classic concept of the "Unicursal Trace" (One-Stroke Drawing), a mathematical problem dating back to the 18th century, and integrates the innovative rule of "Numerical Sequence." You're not just finding a path; you're facing a deeply engaging experience that tests both logic and strategic planning.


-- Sharpen Your Mind with the New Rules --

The rules are straightforward, but mastery is the ultimate challenge. Prepare to put your brain to the test!

[Rule1] Trace all panels in a single, continuous line. You must trace every block (panel) on the board without lifting your finger.

[Rule2] As you trace, numbers automatically appear on the panels, indicating the order in which they were touched. Panels already containing numbers must be traced in precise numerical order (1 followed by 2, 2 followed by 3, and so on). 

This demands highly advanced logical thinking to discover the single, correct path from start to finish.


-- Exciting Features That Make It Unique -- 

- Unique Gimmicks & Mechanics: Puzzle shapes aren't always squares! Face long, rectangular, or hexagonal panels. Beyond numbers, you'll encounter unpredictable gimmicks like "X" and "?" tiles that increase complexity and ensure you'll never get bored.
- Pure Logic Experience: No timers, no score attacks. All you need is your concentration and strategic ability.
- Massive Content: From gentle levels for beginners to ultimate challenges that will stump even the most seasoned puzzle veterans, we have prepared over 1000 stages for you to conquer.
- Daily Brain Training: Use your commute or bedtime to boost your mathematical thinking, improve work efficiency, and keep your mind sharp with stimulating intellectual exercises.


-- Infinite possibilities hidden within simple rules. --
Can you become the ultimate puzzle solver, achieving a complete one-stroke trace while adhering to every numerical constraint?
Unleash the power of logic and intuition—download the challenge today!

## Key features

- One-stroke tracing puzzle
- Numerical sequence rule
- Unique panel shapes and gimmicks
- Over 1000 challenging stages
- No timers or score attacks
- Daily brain training exercises

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads (Permanently) | $1.99 | one-time |
| wide level 5~32 | $0.99 | one-time |
| wide level 33~60 | $0.99 | one-time |


## Recent user reviews (10 of 19)

All indexed reviews: https://appshunter.io/ios/app/fill-and-number/id6754808689/reviews.md

### 5/5 — シンプルで楽しい

*2026-07-06*

指でなぞっていく感触が気持ち良い！
レベリングも出来ており徐々に難しくなっていくし簡単すぎるところはスキップしますかと訪ねてくれるのも親切
直ぐに課金して広告消してしまったので広告頻度はわかりません

### 4/5 — 178-9

*2026-06-15*

178-9は1の上のスキップから始めることでクリアになるようです。

### 5/5 — 恐らく不可能

*2026-06-09*

178-9が恐らくクリア不可能だと思われます。ヒントを見てもどうやってもクリアできないようになっていると思われます。
ゲーム自体はアプデ毎に楽しませて頂いています。ありがとうございます。

### 5/5 — シンプルすぎて神ゲー

*2026-01-26*

まじでひとふでで数字をなぞるだけです。ネットも必要ないのかな？飛行機の上でもできます。
楽しすぎて移動中はずっとやってます！
楽し過ぎて滅😭

### 3/5 — 面白いが惜しい。神が細部に宿らず。

*2026-01-24*

この手の一筆書きパズルが好きなので面白いのですが、ステージが進むごとの難易度曲線が歪なのが凄く勿体無いです。
学んだことを活かしてどんどん難しくなっていき、それを解くことで成長と達成感を得たいのに、難易度が曲線ではなくバラバラなので「え？何で今こんな基礎問題を？」となるシーンがかなり多いです

ギミックなども少しずつ増えていくのに、それを活かした形になっておらず急に新要素が全くない普通の問題なども出てきてノイズになります。

問題生成ロジックを作りAIにダーッと出力させた問題を解かされている感じと言うか、作問者の意図みたいなのが感じられないのが本当にもったいないです。

難易度を問わずただ無心にパズルを解きたい人にはとてもオススメです。

### 5/5 — ノーマル19-8について

*2026-01-20*

ノーマル19-8が何度やってもクリアできません。ChatGPTにも確認しましたが解なしと答えられてしまいました。破綻してないでしょうか…？確認お願いしたいです。
ゲームそのものはとても面白いです。

### 3/5 — 良いパズルゲーム、だが物足りない

*2025-12-29*

レベル20程までやりました。
一筆書きというとっつきやすさと簡単なルールで、システムだけで言えば☆5だと思いました。

しかし、ここまでやりごたえは全然ないです。
レベルが上がってる感覚がなく、解きごたえがありません。
どうやらレベルは100近くあるようですが、このダラダラしたレベルがずっと続くかと思うと、これ以上やらなくていいかなと思ってしまいました。

いいゲームなのに惜しいというのが素直な感想です。
より一層な良問お待ちしております。

### 1/5 — 簡単な問題の繰り返し

*2025-12-25*

パズルと呼べないなぞるだけの問題を何回も繰り返しやらされる
チュートリアル等ならわかるが猿でも解ける問題を繰り返されるのは苦痛

### 5/5 — Good puzzles

*2025-12-24*

Nothing too complex. Most levels are solvable in under 15 seconds. A couple took several minutes and a bit of logical reasoning to work out. 

My biggest gripe is incredibly minor in using up and down arrows to denote greater than and less than when there are already mathematical symbols to indicate that, along with using ‘x’ to mean ‘not’ instead of ‘!’

### 5/5 — 暇つぶしにいいね

*2025-12-22*

2日で一気に88まで終わっちゃいました
ワイドは有料だけど、無料の通常モードだけでも十分楽しめました

## Frequently asked questions about Fill & Number

### What is the main objective of Fill & Number?

The main objective is to trace all panels on the board in a single, continuous line without lifting your finger. Numbered panels must be traced in precise numerical order.

### Does Fill & Number have ads?

Yes, Fill & Number contains advertisements. This allows the game to be offered for free.

### How many levels are available in Fill & Number?

Fill & Number offers over 1000 stages, ranging from gentle levels for beginners to ultimate challenges for experienced players.

### Can I play Fill & Number offline?

The description emphasizes a 'Pure Logic Experience' with no timers, suggesting it can be played offline. However, specific offline play confirmation is not explicitly stated.

### What makes Fill & Number unique compared to other puzzles?

It uniquely combines the classic one-stroke tracing concept with a numerical sequence rule. It also features unpredictable gimmicks like 'X' and '?' tiles beyond simple numbers.

### What is the age rating for Fill & Number?

Fill & Number has an age rating of 17+, which is important for parents to consider.

### How often is Fill & Number updated?

The latest version is 1.2.0, last updated on 2026-06-18. This indicates a relatively recent update, suggesting ongoing development.

### What devices support Fill & Number?

Fill & Number is supported on iPhone, iPad, and iPod devices.

## Version history (last 5 releases)

### 1.2.2 — 2026-08-21

Added puzzles up to level 202.

### 1.2.1 — 2026-08-06

Added puzzles up to level 196.

### 1.2.0 — 2026-06-18

Added puzzles up to level 192.

### 1.1.9 — 2026-05-21

Fixed minor bugs.

### 1.1.8 — 2026-05-14

Added puzzles up to level 184.

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## More apps by Strawberry Gohan

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All apps by Strawberry Gohan: https://appshunter.io/developer/425100193

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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.*