# ReadInTime vs Library Calculator

The clearest difference is update cadence: Library Calculator at monthly against ReadInTime's every 2 months. ReadInTime's advantage is iOS requirement (14.2 vs 18.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ReadInTime sells 1 in-app purchase, starting at $3.99 per year and Library Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReadInTime ships an update every 2 months, Library Calculator monthly. The most recent releases landed on September 28, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ReadInTime | 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 | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 3 MB |
| Requires iOS | **14.2** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Glen Boese](https://appshunter.io/developer/1187947571) | [Logan Voss](https://appshunter.io/developer/1813258380) |

## What reviewers say

### ReadInTime

[App page](https://appshunter.io/ios/app/readintime/id6447919609)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReadInTime Premium Yearly | $3.99 | per year |


### Library Calculator

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

This app helps you manage your reading goals by calculating the daily pages needed to finish a book by its due date. Easily input your current progress and the book's total pages to get a clear reading schedule.

**Highlights:** Daily page calculation for due dates, Update current page number, Recalculate daily reading count, Simple and quick interface

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is ReadInTime free?

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

### Is Library Calculator free?

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

### Do ReadInTime or Library Calculator have ads?

Neither ReadInTime nor Library Calculator shows ads.

### Which is updated more often, ReadInTime or Library Calculator?

ReadInTime ships an update every 2 months, and Library Calculator monthly. Most recently, ReadInTime was updated on September 28, 2026 and Library Calculator on October 3, 2026.

---

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