# Calculator Pro 100% vs Calculator ⁺⁻

The clearest difference is update cadence: Calculator Pro 100% at every 3 weeks against Calculator ⁺⁻'s every 15 months. Calculator Pro 100% also leads on iOS requirement (12.0 vs 15.0). Calculator ⁺⁻'s advantage is review sentiment (50% vs 40%) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calculator Pro 100% ships an update every 3 weeks, Calculator ⁺⁻ every 15 months. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calculator Pro 100% | Calculator ⁺⁻ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (42 ratings)](https://appshunter.io/ios/app/calculator/id6443813573/reviews)** |
| Number of ratings | — | **42** |
| Positive reviews | 40.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 15 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 18 MB | 4 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fabio Giuliani](https://appshunter.io/developer/1333671865) | [Matrix Software Co.](https://appshunter.io/developer/1457004046) |

## What reviewers say

### Calculator Pro 100%

[App page](https://appshunter.io/ios/app/calculator-pro-100/id1609224179)

A practical and functional scientific calculator designed for iPad. It allows users to save and reuse previous calculations, displays partial results, and shows the current expression for clarity. This app is completely free to use.

**Highlights:** Scientific calculator functionality, Save and reuse calculations, Supports various operations, Shows partial results, Displays current expression

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculator ⁺⁻

[App page](https://appshunter.io/ios/app/calculator/id6443813573)

This app offers both basic and scientific calculation functions for iPhone and iPad. Users can customize its appearance, view calculation history, and perform complex equations with high accuracy. It also provides real-time calculation display and adjustable touch feedback.

**Highlights:** Basic and scientific calculator modes, Over 30 scientific operations, Calculation history view, Real-time calculation display, Customizable color themes, Adjustable button touch sound/vibration, High accuracy calculations (75+ significant digits)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Pro 100% free?

Calculator Pro 100% is free to download, with no in-app purchases.

### Is Calculator ⁺⁻ free?

Calculator ⁺⁻ is free to download, with no in-app purchases.

### Do Calculator Pro 100% or Calculator ⁺⁻ have ads?

Both Calculator Pro 100% and Calculator ⁺⁻ show ads.

### Which is updated more often, Calculator Pro 100% or Calculator ⁺⁻?

Calculator Pro 100% ships an update every 3 weeks, and Calculator ⁺⁻ every 15 months. Most recently, Calculator Pro 100% was updated on October 15, 2026 and Calculator ⁺⁻ on October 24, 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.*