# PDF Expert vs Zeno Mobile One

The clearest difference is review sentiment: PDF Expert at 45% against Zeno Mobile One's 0%. PDF Expert also leads on rating (4.7 vs 3.7) and update cadence (fortnightly vs every 4 months). Zeno Mobile One's advantage is in-app purchases (none vs 12) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. PDF Expert sells 10 in-app purchases, starting at $9.99 per month. Zeno Mobile One asks for nothing beyond the download.

PDF Expert holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: PDF Expert has 216K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 45% of PDF Expert's written reviews are positive against 0% of Zeno Mobile One's.

PDF Expert ships an update fortnightly, Zeno Mobile One every 4 months. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PDF Expert | Zeno Mobile One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (216K ratings)](https://appshunter.io/ios/app/pdf-expert-editor-and-reader/id743974925/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/zeno-mobile-one/id1608183425/reviews) |
| Number of ratings | **216K** | 3 |
| Positive reviews | **45.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#74** | — |
| Size | 301 MB | 137 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Readdle Technologies Limited](https://appshunter.io/developer/285035419) | [Leica Geosystems AG](https://appshunter.io/developer/532477810) |

## What reviewers say

### PDF Expert

[App page](https://appshunter.io/ios/app/pdf-expert-editor-and-reader/id743974925)

**Currently charting:** #74 Top Grossing · Productivity, #179 Top Free · Productivity (US App Store)

This app allows you to edit, annotate, fill out forms, and convert PDF documents. It offers AI-powered summarization and analysis, along with tools to merge, sign, and protect your files. Work seamlessly across Apple devices with a user-friendly interface.

**Highlights:** Edit PDF text and images, Annotate and highlight PDFs, Fill out PDF forms, Convert files to and from PDF, AI-powered summarization and analysis, Merge and combine PDF files, Sign documents with e-signatures

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Expert Premium Trial | $9.99 | per month |
| PDF Expert Premium No Trial | $9.99 | per month |
| PDF Expert for Education | $39.99 | per year |
| PDF Expert Premium | $49.99 | per year |
| PDF Expert Premium New | $49.99 | per year |
| PDF Expert Premium Existing | $49.99 | per year |
| PDF Expert – Premium Editing | $49.99 | per year |
| PDF Expert Mac & iOS Pro | $79.99 | per year |
| PDF Expert Mac & iOS | $79.99 | per year |
| PDF Expert Basic | $9.99 | one-time |

**What reviewers like**

- 🚀 Fast and responsive
- 👍 Intuitive and user-friendly interface
- 💡 Powerful annotation and editing tools
- 🔒 Seamless cloud integration
- 📚 Excellent for reading and organizing PDFs

**What reviewers complain about**

- 🐛 Frequent crashes and stability issues
- 🔒 Subscription model for advanced features
- 🔒 Inconsistent pricing and feature changes
- 🔍 Cluttered and confusing UI in latest update
- 🔍 Reduced customization options for annotations

**Reported bugs**

- Corrupted PDFs after editing
- Sync issues with cloud storage providers
- Unexpected loss of annotations and edits
- Unreliable performance on older iPad models

**Requested features**

- Improved palm rejection for Apple Pencil
- Customizable toolbar and annotation presets
- Better integration with other productivity apps
- More flexible file management and organization
- Ability to create fillable PDF forms


### Zeno Mobile One

[App page](https://appshunter.io/ios/app/zeno-mobile-one/id1608183425)

This application simplifies field data collection for non-specialists by connecting to smart antennas for high-precision measurements. It integrates with existing workflows, allowing for easy data visualization, import, and export in multiple formats, including Esri ArcGIS Platform.

**Highlights:** High-precision measurements with smart antennas, Intuitive interface for non-specialists, Seamless integration with existing workflows, Data visualization, import, and export, Supports Esri ArcGIS Platform, BYOD approach with smart antennas

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PDF Expert free?

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

### Is Zeno Mobile One free?

Zeno Mobile One is free to download, with no in-app purchases.

### Which has better reviews, PDF Expert or Zeno Mobile One?

PDF Expert is rated higher. PDF Expert averages 4.7 out of 5 from 216K ratings, while Zeno Mobile One averages 3.7 from 3 ratings.

### Do PDF Expert or Zeno Mobile One have ads?

Neither PDF Expert nor Zeno Mobile One shows ads.

### Which is updated more often, PDF Expert or Zeno Mobile One?

PDF Expert ships an update fortnightly, and Zeno Mobile One every 4 months. Most recently, PDF Expert was updated on October 28, 2026 and Zeno Mobile One on October 24, 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.*