# Calculator Plus Pro vs AMPI

The clearest difference is in-app purchases: AMPI at none against Calculator Plus Pro's 1. Calculator Plus Pro's advantage is update cadence (every 7 months vs every 16 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calculator Plus Pro sells 1 one-off in-app purchase. AMPI asks for nothing beyond the download.

Calculator Plus Pro ships an update every 7 months, AMPI every 16 months. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Calculator Plus Pro | AMPI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (35 ratings)](https://appshunter.io/ios/app/calculator-plus-pro/id1255515239/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 35.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 16 months |
| Monetization | Free | — |
| Size | 9 MB | 98 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [政 王](https://appshunter.io/developer/962633214) | [Australasian Marine Pilots Institute Limited](https://appshunter.io/developer/1485179767) |

## What reviewers say

### Calculator Plus Pro

[App page](https://appshunter.io/ios/app/calculator-plus-pro/id1255515239)

Enhance your iPad experience with this advanced calculator. It offers intelligent calculations and a clean, ad-free interface, making complex math tasks simpler and more efficient.

**Highlights:** Intelligent calculations, Complex math support, Ad-free experience, Optimized for iPad

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads. | $1.99 | one-time |


### AMPI

[App page](https://appshunter.io/ios/app/ampi/id1485179768)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Plus Pro free?

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

### Is AMPI free?

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

### Do Calculator Plus Pro or AMPI have ads?

Neither Calculator Plus Pro nor AMPI shows ads.

### Which is updated more often, Calculator Plus Pro or AMPI?

Calculator Plus Pro ships an update every 7 months, and AMPI every 16 months. Most recently, Calculator Plus Pro was updated on November 2, 2026 and AMPI on November 11, 2026.

---

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