# Levers Calculator vs PDF Library & Reader

The clearest difference is price: PDF Library & Reader at Free against Levers Calculator's $2.99. PDF Library & Reader also leads on rating (5.0 vs 4.5). Levers Calculator's advantage is in-app purchases (none vs 1) and iOS requirement (13 vs 15.0). On ratings volume, ads and device support there is nothing between them.

PDF Library & Reader is free to download; Levers Calculator costs $2.99 up front. PDF Library & Reader sells 1 one-off in-app purchase. Levers Calculator asks for nothing beyond the download.

PDF Library & Reader holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

## The numbers

| Metric | Levers Calculator | PDF Library & Reader |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/levers-calculator/id1407649565/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pdf-library-and-reader/id6752359955/reviews)** |
| Number of ratings | 2 | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | — |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 1 MB |
| Requires iOS | **13** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Wildcatter LLC](https://appshunter.io/developer/1229934042) |

## What reviewers say

### Levers Calculator

[App page](https://appshunter.io/ios/app/levers-calculator/id1407649565)

This physics calculator quickly determines effort force, load force, distances, and mechanical advantage for levers. It includes formulas and supports various units, offering precise calculations up to 16 decimal places.

**Highlights:** Instant force and advantage calculations, Copyable results, Included reference formulas, High precision (16 decimal places), Support for various units, Ad-free and private

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Library & Reader

[App page](https://appshunter.io/ios/app/pdf-library-and-reader/id6752359955)

A minimalist, offline PDF reader allowing users to import documents, track reading progress, and organize their library. It offers a distraction-free reading experience with no signup or internet required.

**Highlights:** Import PDFs from various sources, Automatic reading progress saving, Customizable book titles, Reset reading progress, Offline functionality, Distraction-free reading

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Library Pro | $9.99 | one-time |


## Frequently asked questions

### Is Levers Calculator free?

Levers Calculator costs $2.99, with no in-app purchases.

### Is PDF Library & Reader free?

PDF Library & Reader is free to download, with in-app purchases available.

### Which has better reviews, Levers Calculator or PDF Library & Reader?

PDF Library & Reader is rated higher. Levers Calculator averages 4.5 out of 5 from 2 ratings, while PDF Library & Reader averages 5.0 from 2 ratings.

### Do Levers Calculator or PDF Library & Reader have ads?

Neither Levers Calculator nor PDF Library & Reader shows ads.

---

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