# Reading Diary vs Library Calculator

The clearest difference is in-app purchases: Reading Diary at none against Library Calculator's 1. Library Calculator's advantage is update cadence (every 2 months vs every 12 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Library Calculator sells 1 one-off in-app purchase. Reading Diary asks for nothing beyond the download.

Reading Diary ships an update every 12 months, Library Calculator every 2 months. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Reading Diary | Library Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/library-calculator/id6746132040/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 3 MB |
| Requires iOS | **18.0** | 18.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Julian Schumacher](https://appshunter.io/developer/1681063160) | [Logan Voss](https://appshunter.io/developer/1813258380) |

## What reviewers say

### Reading Diary

[App page](https://appshunter.io/ios/app/reading-diary-book-journal/id6450028928)

**Features:** macOS Compatibility

**In-app purchases:** none


### Library Calculator

[App page](https://appshunter.io/ios/app/library-calculator/id6746132040)

Easily calculate your daily reading goal to finish any book by its due date. Input your current page, total pages, and the deadline to get a clear daily target. Update your progress to adjust the calculation as you read.

**Highlights:** Daily reading page calculation, Set book due dates, Update current page progress, Recalculate daily reading goals, Simple and quick interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reading Notifications | $0.99 | one-time |


## Frequently asked questions

### Is Reading Diary free?

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

### Is Library Calculator free?

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

### Do Reading Diary or Library Calculator have ads?

Neither Reading Diary nor Library Calculator shows ads.

### Which is updated more often, Reading Diary or Library Calculator?

Reading Diary ships an update every 12 months, and Library Calculator every 2 months. Most recently, Reading Diary was updated on November 7, 2026 and Library Calculator on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*