# Calculator Book vs Cuspart

The clearest difference is in-app purchases: Calculator Book at none against Cuspart's 1. Calculator Book also leads on ads (none vs shown) and iOS requirement (9.0 vs 16.0). Cuspart's advantage is update cadence (every 4 months vs every 19 months). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Cuspart 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 Cuspart. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Calculator Book ships an update every 19 months, Cuspart every 4 months. The most recent releases landed on November 9, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Calculator Book | Cuspart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/calculator-book/id1202878874/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/cuspart-mycal/id1546543143/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 13 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [BIZCE TEKNOLOJI VE BILISIM A S](https://appshunter.io/developer/562534245) | [Mustafa Tolga DALBUDAK](https://appshunter.io/developer/1479052908) |

## 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


### Cuspart

[App page](https://appshunter.io/ios/app/cuspart-mycal/id1546543143)

This app offers a professional-grade calculator with advanced math functions, a constants library, and intuitive history tracking. Customize your experience with various color themes and an accessible interface designed for ease of use.

**Highlights:** Basic and advanced arithmetic, Roots, powers, and logarithms, Constants library (π, e), Operation history, Customizable color themes, Accessible UI design

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| myCal Pro | $2.99 | one-time |


## Frequently asked questions

### Is Calculator Book free?

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

### Is Cuspart free?

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

### Which has better reviews, Calculator Book or Cuspart?

Calculator Book and Cuspart are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Calculator Book or Cuspart have ads?

Cuspart shows ads; Calculator Book does not.

### Which is updated more often, Calculator Book or Cuspart?

Calculator Book ships an update every 19 months, and Cuspart every 4 months. Most recently, Calculator Book was updated on November 9, 2026 and Cuspart on November 3, 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.*