# AI Prompt Builder vs PDF nano

The clearest difference is update cadence: PDF nano at every 4 days against AI Prompt Builder's every 3 months. AI Prompt Builder's advantage is iOS requirement (16.1 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. AI Prompt Builder sells 1 one-off in-app purchase and PDF nano sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

AI Prompt Builder ships an update every 3 months, PDF nano every 4 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AI Prompt Builder | PDF nano |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-nano-pdf-editor-and-reader/id6783288588/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 25 MB |
| Requires iOS | **16.1** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eduardo Dominguez Menendez](https://appshunter.io/developer/1697629661) | [Thamer Mohammed](https://appshunter.io/developer/1869675424) |

## What reviewers say

### AI Prompt Builder

[App page](https://appshunter.io/ios/app/ai-prompt-builder/id6737697088)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited prompts + Remove Ads | $4.99 | one-time |


### 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, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDFnano Pro Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is AI Prompt Builder free?

AI Prompt Builder is free to download, with in-app purchases available.

### Is PDF nano free?

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

### Do AI Prompt Builder or PDF nano have ads?

Neither AI Prompt Builder nor PDF nano shows ads.

### Which is updated more often, AI Prompt Builder or PDF nano?

AI Prompt Builder ships an update every 3 months, and PDF nano every 4 days. Most recently, AI Prompt Builder was updated on October 27, 2026 and PDF nano on October 31, 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.*