Kdan Mobile PDF Reader
The best pdf editor for all your devices
OpenSign™
Enterprise-Level Document Signing Goes Open-Source
Updated June 2026
| Kdan Mobile PDF Reader | OpenSign™ | |
|---|---|---|
| Rating | 5.0★ | 4.0★ |
| Reviews | 1 | 2 |
| Pros | 0 | 0 |
| FactScore™ | 15.1 | 19.1 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Kdan Mobile PDF Reader — Pros
No unique pros listedBoth tools — Pros
—Only in OpenSign™ — Pros
No unique pros listedOnly in Kdan Mobile PDF Reader — Cons
—Both tools — Cons
—Only in OpenSign™ — Cons
—Details
| Kdan Mobile PDF Reader | OpenSign™ | |
|---|---|---|
| Categories | Productivity, PDF Editor, E-signature apps | File storage and sharing apps, PDF Editor, E-signature apps |
| Platforms | Web · iOS · Android | Web |
| Added | April 7, 2020 | October 26, 2023 |
| Website | www.kdanmobile.com | www.opensignlabs.com |
Who Should Pick Which?
Choose Kdan Mobile PDF Reader if...
- No unique pros listed
Choose OpenSign™ if...
- No unique pros listed
With a FactScore™ of 15.1 vs 19.1, OpenSign™ leads in community reception. Kdan Mobile PDF Reader uniquely offers No unique pros listed, while OpenSign™ stands out for No unique pros listed.
What Users Say
Kdan Mobile PDF Reader
Love using this reader on the go. I’m able to do so much work outside of office with this app - add signatures, convert documents and fax when necessary. A great tool to have.
OpenSign™
I work as a freelancer, and one of my clients uses this tool for digitally signing all agreements between us. I decided to give it a try as well, and what I like most is how affordable it is while ...
The best digital signing solution, with a simple user interface that I really like. It also offers a self-hosting feature that other alternative tools don't provide.
Frequently Asked Questions
Which is better, Kdan Mobile PDF Reader or OpenSign™?
Based on FactScore™, OpenSign™ leads with a score of 19.1 vs 15.1. OpenSign™ has a higher rating of 4.0★ compared to 5.0★.
What are the pros of Kdan Mobile PDF Reader compared to OpenSign™?
Kdan Mobile PDF Reader uniquely offers: No unique pros listed.
What are the pros of OpenSign™ compared to Kdan Mobile PDF Reader?
OpenSign™ uniquely offers: No unique pros listed.
Is Kdan Mobile PDF Reader better rated than OpenSign™?
Kdan Mobile PDF Reader is rated 5.0★ from 1 reviews. OpenSign™ is rated 4.0★ from 2 reviews.
What is the FactScore™ of Kdan Mobile PDF Reader and OpenSign™?
FactScore™ weighs rating and review volume together. Kdan Mobile PDF Reader scores 15.1 and OpenSign™ scores 19.1.
Don't Get Fooled by Fake Social Media Videos
The world's first fact checker for social media. Paste any link and get an instant credibility score with sources.
Try FactCheckTool Free