# Dr. Number: Bulls and Cows — Daily code puzzle & rankings

> Number deduction puzzle game with daily challenges, duels, and leaderboards. (iPhone/iPad app by 4tune3.)

- Source: https://appshunter.io/ios/app/dr-number-bulls-and-cows/id6808881038 (this page in markdown: same URL + `.md`)
- Developer: [4tune3](https://appshunter.io/developer/1850391055)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 12+
- Requires: iOS 15.0 · 33 MB
- Languages: American English
- Released: 2026-09-16
- Data updated: 2026-10-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/dr-number-bulls-and-cows/id6808881038/reviews.md

## What is Dr. Number?

Dr. Number is a number-deduction puzzle — a code-breaking brain game reimagined with daily challenges, real-time duels, and global rankings.

The game goes by many names: Bulls and Cows, Cows and Bulls, Hit and Blow, Number Baseball, 1A2B. The rules never change — crack the hidden number.

HOW TO PLAY
Guess the secret code. Each guess tells you how many digits are exactly right (right digit, right spot) and how many are close (right digit, wrong spot). Use logic to crack the code in as few tries as possible.

THREE WAYS TO PLAY
• Daily Challenge — Everyone in the world solves the same puzzle each day. Build your streak and share your results.
• Single Play — Choose 3 or 4-digit codes, track your best records, and use pencil marks to narrow down the possibilities.
• Versus — Jump into a quick match, or challenge a friend directly. Both players set a secret code and take turns guessing — first to crack it wins. Climb the ranked leaderboard.

FEATURES
• Global daily rankings and versus leaderboards (Elo-based)
• Invite friends with a code or QR link for private matches
• Pencil marks (memo) to track possible digits like a notebook
• Unlockable color themes and avatars
• 10 languages supported

YOU WILL LIKE THIS IF YOU ENJOY
• Number guessing games and logic puzzles
• Brain games and mental workouts, the way sudoku is
• Quick single rounds that fit into a short break
• Head-to-head puzzle duels against friends

No reading required — the rules click in seconds, and the logic keeps you coming back.

Start Dr. Number today and climb the Bulls and Cows leaderboard!

## Key features

- Daily code puzzle
- Real-time duels
- Global rankings
- Single play mode
- Pencil marks for notes
- Unlockable themes and avatars

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |
| Forest Theme | $0.99 | one-time |
| Berry Theme | $0.99 | one-time |
| Starter Pack | $0.99 | one-time |
| Mini Pack | $1.99 | one-time |
| Standard Pack | $3.99 | one-time |
| Pro Pack | $9.99 | one-time |


## Is Dr. Number safe?

Not enough ratings yet to assess Dr. Number.

## Is Dr. Number legit?

Dr. Number: Bulls and Cows has limited verification signals. The AppsHunter Legitimacy Score for Dr. Number is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/dr-number-bulls-and-cows/id6808881038/reviews.md

### 5/5 — Fun

*2026-09-28*

Fun and addictive number puzzle game! Simple but it really makes you think. Great for quick games anytime.

## Frequently asked questions about Dr. Number

### What is Dr. Number: Bulls and Cows?

Dr. Number: Bulls and Cows is a number-deduction puzzle game where players guess a hidden code. It offers daily challenges, single play, and real-time duels against others.

### How do you play Dr. Number: Bulls and Cows?

You guess a secret code, and each guess provides feedback on correct digits in the right spot (bulls) and correct digits in the wrong spot (cows). Use logic to deduce the code in the fewest tries.

### Does Dr. Number: Bulls and Cows have ads?

Yes, Dr. Number: Bulls and Cows contains advertisements.

### Can I play Dr. Number: Bulls and Cows offline?

The description does not specify offline play capabilities. However, real-time duels and global rankings suggest an internet connection may be required for full functionality.

### What are the different game modes in Dr. Number: Bulls and Cows?

The game features a Daily Challenge mode, a Single Play mode with customizable code lengths, and a Versus mode for quick matches or challenging friends.

### Is Dr. Number: Bulls and Cows suitable for all ages?

Dr. Number: Bulls and Cows has an age rating of 12+, indicating it is suitable for teenagers and older.

### How often is Dr. Number: Bulls and Cows updated?

The app was last updated on October 1, 2026, with version 1.1. This suggests regular updates are provided.

### What languages does Dr. Number: Bulls and Cows support?

Dr. Number: Bulls and Cows supports 10 different languages, making it accessible to a global audience.

## Version history (last 5 releases)

### 1.4 — 2026-10-28

• Added ad privacy consent for players in Europe, the UK and Switzerland. You can review or change your choice any time from Settings.
• Fixed ads appearing more often than intended — the counter was resetting each time the app started.
• Various bug fixes and stability improvements.

### 1.3 — 2026-10-15

• Fixed: a purchase could complete successfully and still show "Purchase failed". Items, ad removal and themes now apply right away.
• When a purchase really does fail, the message now includes an error code.

### 1.2 — 2026-10-03

• Items now work in matches against real players. Hints, eliminations and position checks behave exactly as they do in practice matches.
• Matches no longer stall. A round judged by only one side can't leave the game hanging any more.
• Fixed sound not coming back after watching an ad.
• Reworked the match flow for a steadier experience from matchmaking through to the result screen.
• Corrected home screen layout and alignment.
• Various bug fixes and stability improvements.

### 1.1 — 2026-10-01

Version 2 update

• Three hint items — rule out a digit, reveal a digit, lock a digit
• The Shop is open — buy hint item packs
• Reworked live duels — tiers, seasonal rankings and a new matchmaking reel
• Daily check-in rewards, with a bundle on day 7
• Win streak bonus
• Redesigned home and profile
• Pick your colour theme

### 1.0 — 2026-09-16

No release notes.

## Apps similar to Dr. Number

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Number Baseball: Bulls & Cows](https://appshunter.io/ios/app/number-baseball-bulls-and-cows/id6818085357) | — | Free | Games |
| [Number Baseball Duel - Puzzle](https://appshunter.io/ios/app/number-baseball-duel-puzzle/id6815732897) | — | Free | Games |
| [Mind Cipher: Code Puzzle Game](https://appshunter.io/ios/app/mind-cipher-code-puzzle-game/id6777428188) | — | Free | Games |
| [Bulls & Cows: Number Puzzle](https://appshunter.io/ios/app/bulls-and-cows-number-puzzle/id6789601931) | — | Free | Games |
| [Hit & Blow Online: 1A2B Guess](https://appshunter.io/ios/app/hit-and-blow-online-1a2b-guess/id6768204010) | — | Free | Games |
| [Slither Spot](https://appshunter.io/ios/app/slither-spot/id6746191205) | 4.3 (12) | Free | Games |

## More apps by 4tune3

- [BlackJack Coach AI](https://appshunter.io/ios/app/blackjack-coach-ai/id6754833432)

All apps by 4tune3: https://appshunter.io/developer/1850391055

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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 2026-10-29.*