# PDF Watermark Expert vs QuantFit

The clearest difference is rating: PDF Watermark Expert at 5.0 against QuantFit's 3.0. PDF Watermark Expert also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). QuantFit's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 4 months). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. PDF Watermark Expert sells 3 in-app purchases, starting at $2.99 per 7 days and QuantFit sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

PDF Watermark Expert holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

PDF Watermark Expert ships an update every 4 months, QuantFit every 2 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PDF Watermark Expert | QuantFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-watermark-expert/id6737170415/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/quantfit/id6762386971/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 68 MB | 54 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Muhammad Awais Younas](https://appshunter.io/developer/1771187232) | [Andrew Esparon](https://appshunter.io/developer/1849179000) |

## What reviewers say

### PDF Watermark Expert

[App page](https://appshunter.io/ios/app/pdf-watermark-expert/id6737170415)

Easily add custom text watermarks to your PDF documents for enhanced security and branding. Personalize fonts, colors, transparency, and position to protect your files from misuse and plagiarism. The app offers a user-friendly interface and cross-platform compatibility for seamless document workflow.

**Highlights:** Add custom text watermarks, Full watermark customization, Secure PDF files, User-friendly interface, Cross-platform compatibility, Fast processing

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Week | $2.99 | per 7 days |
| Premium Month | $7.99 | per month |
| Premium Year | $44.99 | per year |


### QuantFit

[App page](https://appshunter.io/ios/app/quantfit/id6762386971)

This app provides a powerful econometrics workbench for mobile devices, allowing users to run complex regressions and analyze data on the go. It supports various estimation techniques and integrates with live data sources, offering publication-ready output and advanced diagnostic tools.

**Highlights:** Cross-section and panel estimators, Time-series and system estimators, Live data integration (World Bank, IMF, FRED), Publication-ready output (LaTeX, PNG, CSV), Residual diagnostics and unit-root tests, Policy and scenario shock simulations, Auto-generated academic paper drafts

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QuantFit Pro Monthly | $9.99 | per month |
| QuantFit Pro Annual | $59.99 | per year |
| QuantFit Pro Lifetime | $149.99 | one-time |


## Frequently asked questions

### Is PDF Watermark Expert free?

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

### Is QuantFit free?

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

### Which has better reviews, PDF Watermark Expert or QuantFit?

PDF Watermark Expert is rated higher. PDF Watermark Expert averages 5.0 out of 5 from 1 ratings, while QuantFit averages 3.0 from 1 ratings.

### Do PDF Watermark Expert or QuantFit have ads?

PDF Watermark Expert shows ads; QuantFit does not.

### Which is updated more often, PDF Watermark Expert or QuantFit?

PDF Watermark Expert ships an update every 4 months, and QuantFit every 2 weeks. Most recently, PDF Watermark Expert was updated on October 30, 2026 and QuantFit on November 5, 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.*