# Nitro PDF Pro vs WriteTone

The clearest difference is price: Nitro PDF Pro at Free against WriteTone's $0.99. Nitro PDF Pro also leads on ratings volume (161 vs 1) and iOS requirement (18.0 vs 26.2). WriteTone's advantage is rating (5.0 vs 3.9) and in-app purchases (none vs 2). On update cadence, ads and device support there is nothing between them.

Nitro PDF Pro is free to download; WriteTone costs $0.99 up front. Nitro PDF Pro sells 2 in-app purchases, starting at $19.99 per year. WriteTone asks for nothing beyond the download.

WriteTone holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Nitro PDF Pro has 161 ratings behind it against 1, so its average is the more settled of the two.

Nitro PDF Pro ships an update every 2 months, WriteTone every 4 months. The most recent releases landed on October 18, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Nitro PDF Pro | WriteTone |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [3.9 (161 ratings)](https://appshunter.io/ios/app/nitro-pdf-pro-read-and-edit/id1608616539/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/writetone/id6758879409/reviews)** |
| Number of ratings | **161** | 1 |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 59 MB | 31 MB |
| Requires iOS | **18.0** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nitro Software, Inc.](https://appshunter.io/developer/1607870122) | [Trevor Lawrence](https://appshunter.io/developer/1862997033) |

## What reviewers say

### Nitro PDF Pro

[App page](https://appshunter.io/ios/app/nitro-pdf-pro-read-and-edit/id1608616539)

Edit, read, sign, and secure PDF documents on your iOS device. This powerful yet lightweight app allows for on-the-go productivity with features like text editing, annotation, form filling, and cloud syncing.

**Highlights:** Edit PDF text, Annotate and highlight PDFs, Fill and save PDF forms, Sign and share PDF documents, Password protect PDFs, Sync with cloud storage, Merge and organize PDFs

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $19.99 | per year |
| Nitro PDF Pro for iOS | $9.99 | one-time |

**What reviewers like**

- 👍 Helpful for managing project documents
- 👍 Convenient for PDF modifications
- 👍 Superior PDF handling on Mac
- 👍 Satisfactory in both Mac and Windows environments

**What reviewers complain about**

- 👎 Pro features not available on iOS/iPadOS
- 👎 Yearly charges for basic features
- 👎 Expensive and useless
- 👎 Fails to deliver promised features
- 👎 Impossible to reorder PDF files

**Reported bugs**

- Cannot reorder PDF files
- Crashes when opening PDFs from websites/email
- Does not save markups or documents
- Difficulty creating new folders
- Cannot rotate pages

**Requested features**

- Keyboard support (Cmd + F for search)
- Ability to cancel search with Esc
- OCR and conversion to text documents on tablets
- User manual for iPad app
- Support for Apple Pencil


### WriteTone

[App page](https://appshunter.io/ios/app/writetone/id6758879409)

This app analyzes your writing style from social media posts to rewrite any text in your unique voice. It offers multiple platforms and tone modifiers for personalized content creation. Save your last 20 rewrites automatically.

**Highlights:** Deep voice analysis from social media, Rewrites for 9 platforms, Tone modifiers, Signature phrase integration, Automatic save of last 20 rewrites

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Nitro PDF Pro free?

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

### Is WriteTone free?

WriteTone costs $0.99, with no in-app purchases.

### Which has better reviews, Nitro PDF Pro or WriteTone?

WriteTone is rated higher. Nitro PDF Pro averages 3.9 out of 5 from 161 ratings, while WriteTone averages 5.0 from 1 ratings.

### Do Nitro PDF Pro or WriteTone have ads?

Neither Nitro PDF Pro nor WriteTone shows ads.

### Which is updated more often, Nitro PDF Pro or WriteTone?

Nitro PDF Pro ships an update every 2 months, and WriteTone every 4 months. Most recently, Nitro PDF Pro was updated on October 18, 2026 and WriteTone on October 21, 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.*