# PaperLite vs OS3

The clearest difference is in-app purchases: PaperLite at none against OS3's 1. PaperLite also leads on update cadence (every 10 days vs monthly) and iOS requirement (15.6 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. OS3 sells 1 in-app purchase, starting at $12.99 per month. PaperLite asks for nothing beyond the download.

PaperLite ships an update every 10 days, OS3 monthly. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | PaperLite | OS3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Monthly |
| Size | 53 MB | 4 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Pratik Saboo](https://appshunter.io/developer/1601528052) | [QR LLC](https://appshunter.io/developer/1820066581) |

## What reviewers say

### PaperLite

[App page](https://appshunter.io/ios/app/paperlite/id6746432812)

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

**In-app purchases:** none


### OS3

[App page](https://appshunter.io/ios/app/os3/id6760365662)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OS3 Pro | $12.99 | per month |


## Frequently asked questions

### Is PaperLite free?

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

### Is OS3 free?

OS3 is free to download, with in-app purchases available.

### Do PaperLite or OS3 have ads?

Neither PaperLite nor OS3 shows ads.

### Which is updated more often, PaperLite or OS3?

PaperLite ships an update every 10 days, and OS3 monthly. Most recently, PaperLite was updated on October 4, 2026 and OS3 on October 16, 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.*