# PDF nano vs Isy.AI

The clearest difference is in-app purchases: Isy.AI at none against PDF nano's 1. Isy.AI also leads on iOS requirement (16.4 vs 18.6). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. PDF nano sells 1 one-off in-app purchase. Isy.AI asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for PDF nano against 5.0 for Isy.AI. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | PDF nano | Isy.AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-nano-pdf-editor-and-reader/id6783288588/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/isyai-ai-notes-second-brain/id6809262091/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 60 MB |
| Requires iOS | 18.6 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Thamer Mohammed](https://appshunter.io/developer/1869675424) | [Akhil Arunkumar](https://appshunter.io/developer/1877687216) |

## What reviewers say

### PDF nano

[App page](https://appshunter.io/ios/app/pdf-nano-pdf-editor-and-reader/id6783288588)

Edit, translate, and manage PDF documents with a focus on on-device privacy. This app offers tools for scanning, converting, annotating, and organizing your files locally.

**Highlights:** Read, organize, and manage PDFs, Offline PDF translation with layout preservation, Scan documents and create PDFs, Convert PDFs to Word, Excel, or images, OCR for Arabic and English text, Add signatures and annotations, Remove hidden metadata for privacy

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDFnano Pro Lifetime | $19.99 | one-time |


### Isy.AI

[App page](https://appshunter.io/ios/app/isyai-ai-notes-second-brain/id6809262091)

**In-app purchases:** none


## Frequently asked questions

### Is PDF nano free?

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

### Is Isy.AI free?

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

### Which has better reviews, PDF nano or Isy.AI?

PDF nano and Isy.AI are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do PDF nano or Isy.AI have ads?

Neither PDF nano nor Isy.AI shows ads.

### Which is updated more often, PDF nano or Isy.AI?

PDF nano ships an update every 3 days, and Isy.AI every 3 days. Most recently, PDF nano was updated on October 24, 2026 and Isy.AI on October 26, 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.*