# Calculator Book vs Calculator ⁺⁻

The clearest difference is ads: Calculator Book at none against Calculator ⁺⁻'s shown. Calculator Book also leads on review sentiment (76% vs 50%) and rating (5.0 vs 4.7). Calculator ⁺⁻'s advantage is ratings volume (42 vs 2). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Calculator Book holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Calculator ⁺⁻ has 42 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 76% of Calculator Book's written reviews are positive against 50% of Calculator ⁺⁻'s.

Calculator Book ships an update every 19 months, Calculator ⁺⁻ every 15 months. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calculator Book | Calculator ⁺⁻ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calculator-book/id1202878874/reviews)** | [4.7 (42 ratings)](https://appshunter.io/ios/app/calculator/id6443813573/reviews) |
| Number of ratings | 2 | **42** |
| Positive reviews | **76.5% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Every 15 months** |
| Monetization | **Free** | Ad-supported |
| Size | 14 MB | 4 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BIZCE TEKNOLOJI VE BILISIM A S](https://appshunter.io/developer/562534245) | [Matrix Software Co.](https://appshunter.io/developer/1457004046) |

## What reviewers say

### Calculator Book

[App page](https://appshunter.io/ios/app/calculator-book/id1202878874)

Perform calculations with a clear view of all numbers involved. Easily see subtotals and modify previous entries for quick re-calculations. This tool simplifies complex math by displaying related figures simultaneously.

**Highlights:** Multi-line calculation display, View total and related numbers, Generate subtotals, Edit previous numbers, Easy re-calculation

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

**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 Book free?

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

### Is Calculator ⁺⁻ free?

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

### Which has better reviews, Calculator Book or Calculator ⁺⁻?

Calculator Book is rated higher. Calculator Book averages 5.0 out of 5 from 2 ratings, while Calculator ⁺⁻ averages 4.7 from 42 ratings.

### Do Calculator Book or Calculator ⁺⁻ have ads?

Calculator ⁺⁻ shows ads; Calculator Book does not.

### Which is updated more often, Calculator Book or Calculator ⁺⁻?

Calculator Book ships an update every 19 months, and Calculator ⁺⁻ every 15 months. Most recently, Calculator Book was updated on October 10, 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.*