# CombiPerm Calculator by CS — Permutation, Combination, Quiz

> Permutation, Combination, Quiz (iPhone/iPad app by ChatStick Company Limited.)

- Source: https://appshunter.io/ios/app/combiperm-calculator-by-cs/id6761089836 (this page in markdown: same URL + `.md`)
- Developer: [ChatStick Company Limited](https://appshunter.io/developer/1165816085)
- Category: Education, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 12 MB
- Languages: American English
- Released: 2026-03-25
- Data updated: 2026-06-15
- User reviews in markdown: https://appshunter.io/ios/app/combiperm-calculator-by-cs/id6761089836/reviews.md

## What is CombiPerm Calculator by CS?

CombiPerm Calculator helps you solve counting problems faster and understand the math behind every answer.

Whether you are preparing for exams or practicing probability topics, CombiPerm gives you quick results plus guided learning tools.

FEATURES
- Permutation calculator (with and without repetition)
- Combination calculator (with and without repetition)
- Factorial calculator with readable outputs
- Step-by-step solution breakdowns
- Smart "Which Formula?" helper
- Formula guide with examples and use cases
- Repetition case explainer
- Quiz practice across multiple difficulty levels
- Progress stats and achievements
- Calculation history

PREMIUM (ONE-TIME PURCHASE)
- Remove all ads
- Unlimited step-by-step access
- Unlimited history
- Favorites saving
- Full quiz question access
- Export/share result tools
- Future premium feature unlocks

CombiPerm is built for students who want both speed and understanding.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-03-25

No release notes.

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All apps by ChatStick Company Limited: https://appshunter.io/developer/1165816085

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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 2026-06-15.*