# BookViewer vs CalcMemo

BookViewer and CalcMemo are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | BookViewer | CalcMemo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 2 MB | 32 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [jun murase](https://appshunter.io/developer/1867130231) | [Tomoyuki Fukuzawa](https://appshunter.io/developer/1893263866) |

## What reviewers say

### BookViewer

[App page](https://appshunter.io/ios/app/bookviewer/id6760602781)

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

**In-app purchases:** none


### CalcMemo

[App page](https://appshunter.io/ios/app/calcmemo-calc-notes/id6762182082)

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

**In-app purchases:** none


## Frequently asked questions

### Is BookViewer free?

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

### Is CalcMemo free?

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

### Do BookViewer or CalcMemo have ads?

Neither BookViewer nor CalcMemo shows ads.

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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.*