# Calculator # vs Permutation Combination

The clearest difference is review sentiment: Calculator # at 60% against Permutation Combination's 0%. Permutation Combination's advantage is in-app purchases (none vs 6) and update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calculator # sells 6 in-app purchases, starting at $1.49 per month. Permutation Combination asks for nothing beyond the download.

Calculator # ships an update every 2 months, Permutation Combination every 2 days. The most recent releases landed on October 13, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Calculator # | Permutation Combination |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (36K ratings)](https://appshunter.io/ios/app/calculator/id458535080/reviews)** | — |
| Number of ratings | **36K** | — |
| Positive reviews | **59.8% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 57 MB | 31 MB |
| Requires iOS | 12.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Incpt.Mobis](https://appshunter.io/developer/445261166) | [HIWAZERO](https://appshunter.io/developer/1621048794) |

## What reviewers say

### Calculator #

[App page](https://appshunter.io/ios/app/calculator/id458535080)

This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

**Highlights:** Math Photos Solver, Handwriting Recognition, AI Math Problem Solver, Mathematical Display, Equation Solvers, 2D Graphing, Algebraic Functions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Upgrade 1 Month | $1.49 | per month |
| PRO Upgrade 3 Months | $2.99 | per 3 months |
| PRO + Recognition 1 Month | $4.99 | per month |
| PRO + Recognition 3 Months | $11.99 | per 3 months |
| 250 AI Recognition & Queries | $0.99 | one-time |
| 600 AI Recognition & Queries | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Powerful functionality
- 💡 Helpful for math classes
- ⭐ Great for students
- 👌 Works like a real calculator

**What reviewers complain about**

- 🔍 Confusing interface after update
- 📢 Too many intrusive ads
- 💰 Paywall for advanced features
- 🐛 Incorrect calculations
- 🔇 Loud audio ads

**Reported bugs**

- Crashes when trying to use certain functions
- Handwriting recognition not working reliably
- Inability to input negative numbers

**Requested features**

- Add option to turn off animation
- Improve ad placement to avoid obstructing usage
- Provide more transparency on paid features


### Permutation Combination

[App page](https://appshunter.io/ios/app/permutation-combination/id6448662601)

Easily calculate permutations and combinations for mathematics and statistics. This tool simplifies complex calculations, helping users save time and improve accuracy in exams and studies.

**Highlights:** Permutation calculations, Combination calculations, Time-saving for exams, Mathematical and statistical use, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator # free?

Calculator # is free to download, with in-app purchases available.

### Is Permutation Combination free?

Permutation Combination is free to download, with no in-app purchases.

### Do Calculator # or Permutation Combination have ads?

Both Calculator # and Permutation Combination show ads.

### Which is updated more often, Calculator # or Permutation Combination?

Calculator # ships an update every 2 months, and Permutation Combination every 2 days. Most recently, Calculator # was updated on October 13, 2026 and Permutation Combination on September 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*