# Seri vs PDF workbench

The clearest difference is ads: Seri at none against PDF workbench's shown. Seri also leads on monetization model (free vs free with in-app purchases). PDF workbench's advantage is update cadence (every 2 weeks vs every 4 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Seri sells 1 one-off in-app purchase and PDF workbench sells 2 in-app purchases, starting at $4.99 per month. 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 Seri against 5.0 for PDF workbench. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Seri ships an update every 4 months, PDF workbench every 2 weeks. The most recent releases landed on September 9, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Seri | PDF workbench |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/seri-safe-inventory-tracker/id1547287166/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/pdf-workbench-convert-and-edit/id6742145977/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 40 MB | 27 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [SERI-SAFE LLC](https://appshunter.io/developer/1547287168) | [NOVASCRIPTUM LLC](https://appshunter.io/developer/1797063657) |

## What reviewers say

### Seri

[App page](https://appshunter.io/ios/app/seri-safe-inventory-tracker/id1547287166)

Manage your valuable assets with this cloud-based inventory tracker. Easily list items with serial numbers, photos, and purchase details for personal or business use. It helps prevent receiving stolen property and aids law enforcement in tracking assets.

**Highlights:** Cloud-based asset inventory, Track items with serial numbers and photos, Personal and business inventory management, Check for stolen property, Aid law enforcement in asset tracking, Easy to use interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro | $3.99 | one-time |


### PDF workbench

[App page](https://appshunter.io/ios/app/pdf-workbench-convert-and-edit/id6742145977)

Edit, convert, and manage PDF documents with a comprehensive suite of tools. Transform images and documents into PDFs, extract text, merge files, and secure your documents with passwords and watermarks. Offers batch processing and an intuitive interface for efficient mobile PDF management.

**Highlights:** Convert images and documents to PDF, Convert PDFs to Word, JPEG, PNG, Merge and split PDF files, Add digital signatures and watermarks, Password protection for PDFs, Compress PDF file size, OCR text extraction

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $49.99 | per year |


## Frequently asked questions

### Is Seri free?

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

### Is PDF workbench free?

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

### Which has better reviews, Seri or PDF workbench?

Seri and PDF workbench are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Seri or PDF workbench have ads?

PDF workbench shows ads; Seri does not.

### Which is updated more often, Seri or PDF workbench?

Seri ships an update every 4 months, and PDF workbench every 2 weeks. Most recently, Seri was updated on September 9, 2026 and PDF workbench on June 11, 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.*