# PlusMinus: Number Duel — Crack the secret number

> Crack the secret number (iPhone/iPad app by Nur Baykara.)

- Source: https://appshunter.io/ios/app/plusminus-number-duel/id6825749048 (this page in markdown: same URL + `.md`)
- Developer: [Nur Baykara](https://appshunter.io/developer/6774351787)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 15.0 · 67 MB
- Languages: German (Germany)
- Released: 2026-11-06
- Data updated: 2026-11-10

## What is PlusMinus?

PlusMinus is the classic number-deduction duel – known as "Bulls and Cows" – in a calm, clear design.

HOW IT WORKS
Each player picks a secret number with different digits. You take turns guessing the other's number. Every guess is evaluated:
+ for each right digit in the right place
− for each right digit in the wrong place
Use the clues to close in on the number. Whoever cracks it first wins.

You evaluate your opponent's guesses yourself – just like on paper. PlusMinus quietly checks in the background, and in learning mode it shows you where you went wrong.

PLAY YOUR WAY
• Against the computer – offline, no internet needed, three difficulty levels
• With friends – create a game, share the code and play: take turns with up to 24 hours per move, or live with 60 seconds per move
• Daily puzzle – a new secret number for everyone every day, 10 tries. Keep your streak going and share your result without giving the number away. Optional daily reminder.
• "My games" shows at a glance where it's your turn, and notifications tell you when it's your move.

EASY TO READ, EASY TO USE
• Large, clear digits – even with large text
• Evaluate on a clear number line
• Mark digits: private notes for digits you found or ruled out
• Statistics for your online games and the daily puzzle
• In German, English and Turkish

FREE AND PRO
Free: play the computer with 4 digits on Normal, start 3 new games with friends per day, and the daily puzzle – with banner ads, never during a game.

PlusMinus Pro is a one-time purchase, no subscription:
• No ads
• Easy and Hard against the computer
• 2, 3, 5 and 6 digits
• Unlimited new games with friends
• Full statistics
• Green / orange colours

No sign-up: you play with an anonymous account and can delete your account and data in the app at any time.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| PlusMinus Pro | $3.99 | one-time |


## Is PlusMinus safe?

Not enough ratings yet to assess PlusMinus.

## Is PlusMinus legit?

PlusMinus: Number Duel appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for PlusMinus is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 1.3.0 — 2026-11-09

New: rematch in one tap – "Play again" after a friends game, no new code. Sounds and vibration in games (switch them off under text size). Daily puzzle ranking: your place among everyone who solved it today, and how your friends are doing – they only see your name if you switch that on.

### 1.2.2 — 2026-11-08

Small improvements and bug fixes.

### 1.2.1 — 2026-11-07

Marking digits: first tap red, second green, third clears – red digits are no longer struck through. New and optional: anonymous usage statistics that show us what to improve (change it any time under PlusMinus Pro).

### 1.2.0 — 2026-11-06

No release notes.

## More apps by Nur Baykara

- [SchreibMama Deutsch](https://appshunter.io/ios/app/schreibmama-deutsch/id6774351785)
- [SchreibMama Latein](https://appshunter.io/ios/app/schreibmama-latein/id6795686475)
- [SchreibMama Français](https://appshunter.io/ios/app/schreibmama-francais/id6799499878)
- [SchreibMama Mathe](https://appshunter.io/ios/app/schreibmama-mathe/id6800898854)
- [SchreibMama Nederlands](https://appshunter.io/ios/app/schreibmama-nederlands/id6815033336)
- [SchreibMama English](https://appshunter.io/ios/app/schreibmama-english/id6825125026)

All apps by Nur Baykara: https://appshunter.io/developer/6774351787

---

*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 2026-11-10.*