# Calculator Book vs Calculator Plus Basic & PEMDAS

The clearest difference is in-app purchases: Calculator Book at none against Calculator Plus Basic & PEMDAS's 1. Calculator Book also leads on ads (none vs shown) and iOS requirement (9.0 vs 17.0). Calculator Plus Basic & PEMDAS's advantage is update cadence (weekly vs every 19 months) and review sentiment (100% vs 76%). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Calculator Plus Basic & PEMDAS sells 1 one-off in-app purchase. Calculator Book asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Calculator Book against 5.0 for Calculator Plus Basic & PEMDAS. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews are what separate them: 76% of Calculator Book's written reviews are positive against 100% of Calculator Plus Basic & PEMDAS's.

Calculator Book ships an update every 19 months, Calculator Plus Basic & PEMDAS weekly. The most recent releases landed on September 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Calculator Book | Calculator Plus Basic & PEMDAS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/calculator-book/id1202878874/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/calculator-plus-basic-and-pemdas/id6758761367/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | 76.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 91 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BIZCE TEKNOLOJI VE BILISIM A S](https://appshunter.io/developer/562534245) | [Paul Flowers](https://appshunter.io/developer/1874852072) |

## 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 Plus Basic & PEMDAS

[App page](https://appshunter.io/ios/app/calculator-plus-basic-and-pemdas/id6758761367)

This app offers a customizable calculator experience with a clean interface and advanced features like PEMDAS mode and calculation history. Personalize its appearance with numerous themes and button styles to suit your preferences.

**Highlights:** PEMDAS order of operations mode, Over 50 customizable color themes, Full calculation history, Adjustable decimal precision, Copy and paste functionality, Sales tax calculations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| More Beans Calculator | $4.99 | one-time |


## Frequently asked questions

### Is Calculator Book free?

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

### Is Calculator Plus Basic & PEMDAS free?

Calculator Plus Basic & PEMDAS is free to download, with in-app purchases available.

### Which has better reviews, Calculator Book or Calculator Plus Basic & PEMDAS?

Calculator Book and Calculator Plus Basic & PEMDAS are both rated 5.0 out of 5 on the App Store, from 2 and 5 ratings respectively.

### Do Calculator Book or Calculator Plus Basic & PEMDAS have ads?

Calculator Plus Basic & PEMDAS shows ads; Calculator Book does not.

### Which is updated more often, Calculator Book or Calculator Plus Basic & PEMDAS?

Calculator Book ships an update every 19 months, and Calculator Plus Basic & PEMDAS weekly. Most recently, Calculator Book was updated on September 24, 2026 and Calculator Plus Basic & PEMDAS on October 18, 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.*