# SmartScanner vs ZEN PDF PRO

The clearest difference is rating: SmartScanner at 4.7 against ZEN PDF PRO's 4.1. SmartScanner also leads on review sentiment (40% vs 21%). ZEN PDF PRO's advantage is in-app purchases (none vs 10) and update cadence (fortnightly vs every 2 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. SmartScanner sells 10 in-app purchases, starting at $0.99 per month. ZEN PDF PRO asks for nothing beyond the download.

SmartScanner holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 1.2K and 1.5K respectively. Written reviews point the same way: 40% of SmartScanner's written reviews are positive against 21% of ZEN PDF PRO's.

SmartScanner ships an update every 2 months, ZEN PDF PRO fortnightly. Both last shipped on September 29, 2026.

## The numbers

| Metric | SmartScanner | ZEN PDF PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.2K ratings)](https://appshunter.io/ios/app/smartscanner-ai-measure-and-count/id1663170838/reviews)** | [4.1 (1.5K ratings)](https://appshunter.io/ios/app/zen-pdf-pro/id6450250043/reviews) |
| Number of ratings | 1.2K | **1.5K** |
| Positive reviews | **40.0% of reviews** | 21.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 90 MB | 46 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Top Joy](https://appshunter.io/developer/1573223422) | [EINMOB LIMITED](https://appshunter.io/developer/1692475934) |

## What reviewers say

### SmartScanner

[App page](https://appshunter.io/ios/app/smartscanner-ai-measure-and-count/id1663170838)

This app transforms your phone into a versatile scanning tool. Measure heights, lengths, and areas with precision using augmented reality. It also features automatic item counting, plant identification, text extraction, and QR code scanning.

**Highlights:** Height measurement, Precision ruler, Auto item counting, Area calculator, Plant identification, Text extraction, QR/Barcode scanner

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SmartScanner Premium (monthly) | $0.99 | per month |
| 基础订阅 | $3.99 | per 7 days |
| SmartScanner Premium (weekly) | $4.99 | per 7 days |
| 高级订阅 | $6.99 | per 7 days |
| SmartScanner Premium (weekly) | $8.99 | per 7 days |
| 基础季度订阅 | $39.99 | per 3 months |
| SmartScanner Premium (Yearly) | $65.99 | per year |
| SmartScanner Premium (1 Month) | $14.99 | one-time |
| SmartScanner Premium (1 Year) | $34.99 | one-time |
| Lifetime Premium | $65.99 | one-time |

**What reviewers like**

- 🌟 Excellent features
- ✨ Precision measurements
- 👍 Easy to use

**What reviewers complain about**

- 💰 Not free as advertised
- 🚫 Inaccurate measurements
- 🤖 Unreliable plant/object recognition

**Reported bugs**

- Unexpected charges and billing issues
- Compatibility problems on certain devices

**Requested features**

- More measurement options
- Improved accuracy
- Reliable plant/object identification


### ZEN PDF PRO

[App page](https://appshunter.io/ios/app/zen-pdf-pro/id6450250043)

Transform your phone into a portable scanner and professional document editor. Easily convert images to PDF, merge or split files, and enhance scanned documents with smart editing tools. Securely store and share your files with a minimalist, intuitive interface.

**Highlights:** Portable scanner, PDF editing, Image to PDF conversion, File merging and splitting, Smart image editing, Encrypted local storage, Direct PDF printing

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

**In-app purchases:** none


## Frequently asked questions

### Is SmartScanner free?

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

### Is ZEN PDF PRO free?

ZEN PDF PRO is free to download, with no in-app purchases.

### Which has better reviews, SmartScanner or ZEN PDF PRO?

SmartScanner is rated higher. SmartScanner averages 4.7 out of 5 from 1.2K ratings, while ZEN PDF PRO averages 4.1 from 1.5K ratings.

### Do SmartScanner or ZEN PDF PRO have ads?

Neither SmartScanner nor ZEN PDF PRO shows ads.

### Which is updated more often, SmartScanner or ZEN PDF PRO?

SmartScanner ships an update every 2 months, and ZEN PDF PRO fortnightly. Most recently, SmartScanner was updated on September 29, 2026 and ZEN PDF PRO on September 29, 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.*