# SAiY vs PDF Pro

The clearest difference is update cadence: PDF Pro at every 9 days against SAiY's monthly. SAiY's advantage is ratings volume (4 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. SAiY sells 5 in-app purchases, starting at $14.99 per month and PDF Pro sells 7 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for SAiY against 5.0 for PDF Pro. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

SAiY ships an update monthly, PDF Pro every 9 days. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | SAiY | PDF Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/saiy/id6462937067/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-pro-doc-and-mark/id6738903272/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 87 MB | 79 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ADI HOLDINGS LLC](https://appshunter.io/developer/1697636124) | [APPSKY HONG KONG LIMITED](https://appshunter.io/developer/1629849302) |

## What reviewers say

### SAiY

[App page](https://appshunter.io/ios/app/saiy/id6462937067)

Enhance your writing with AI-powered text generation, tone adjustment, and translation. Create marketing content for social media and improve your communication.

**Highlights:** Generative AI text enhancement, Message tone adjustment, English to multiple language translation, Marketing content writing, Social media content creation

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Business-Monthly | $14.99 | per month |
| Freelance monthly | $14.99 | per month |
| Elite-Monthly | $19.99 | per month |
| Business Annually | $95.99 | per year |
| Elite-Annually | $119.99 | per year |


### PDF Pro

[App page](https://appshunter.io/ios/app/pdf-pro-doc-and-mark/id6738903272)

This app is a comprehensive document management tool for handling PDFs and other file types. It allows users to scan, annotate, sign, merge images into PDFs, and quickly search and favorite files. Enjoy efficient mobile productivity with a user-friendly interface.

**Highlights:** Multi-format document support (PDF, Word, Excel, PPT), Scan documents to PDF, Annotate PDFs with highlighting and drawing, Digitally sign documents, Merge images into PDF, Quick file search and favorites

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Pro | $5.99 | per 7 days |
| PDF Pro | $6.99 | per 7 days |
| PDF Pro | $6.99 | per 7 days |
| PDF Pro | $19.99 | per month |
| PDF Pro | $49.99 | per year |
| PDF Pro | $59.99 | per year |
| PDF Pro | $59.99 | per year |


## Frequently asked questions

### Is SAiY free?

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

### Is PDF Pro free?

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

### Which has better reviews, SAiY or PDF Pro?

SAiY and PDF Pro are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do SAiY or PDF Pro have ads?

Both SAiY and PDF Pro show ads.

### Which is updated more often, SAiY or PDF Pro?

SAiY ships an update monthly, and PDF Pro every 9 days. Most recently, SAiY was updated on October 11, 2026 and PDF Pro on October 4, 2026.

---

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