Sign PDF by Certificate
By JIRI CHOMAT
Sign PDF by Certificate is a specialized iOS utility for applying digital signatures to documents using .p12 or .pfx certificates.
The App DNA
What makes this app unique?
Users hire this app to maintain document security through local-only processing, serving the need for authenticated signing without cloud-based privacy risks.
For Professionals and individuals requiring secure, local-only digital signing of documents on iOS devices.
What does it look like?
Key features
Imports .p12 and .pfx files to apply digital signatures to PDF documents locally
Secures saved certificate passwords using biometric device hardware
Keeps certificates, passwords, and document history on the device without cloud transmission
How much does it cost?
The app is currently distributed as a free utility with no observable monetization gates or subscription tiers.
Velocity
Dormant developmentopaqueShow more...
The app has only one recorded release in the observed data, which occurred on April 29, 2026. Given the current date of May 19, 2026, there is insufficient data to establish a recurring development cadence. The lack of subsequent updates or historical context classifies this as a zombie state until further activity is observed.
Who built it?
JIRI CHOMAT
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Lunch MapUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for Sign PDF by Certificate
How's the Business market?
The app occupies a specialized security niche in the Business category, focusing on local-only certificate signing rather than the broad conversion workflows that dominate the top of the chart.
Read the market outlookThe rivals identified
By Softuvo Solutions Private Limited
Both apps target users needing to sign documents, but they diverge on security: Sign PDF by Certificate focuses on certificate-based verification while Digital signature creator focuses on simple handwritten image imports.
- Sign PDF by Certificate uses Face ID for secure certificate management; Digital signature creator lacks biometric security.
- Sign PDF by Certificate processes files locally for privacy; Digital signature creator lacks updates since May 2019.
- Sign PDF by Certificate supports certificate-based signing; Digital signature creator only supports basic image-based signature capture.
Unlock the head-to-head verdict: where this rival wins, and where it loses.
Access the full report for freeThe Analyst's Read
Key takeaways for Sign PDF by Certificate
Where is it heading?
The market for PDF utilities is consolidating around all-in-one suites that prioritize workflow speed over specialized security. The app must bridge the gap between its secure signing niche and standard document conversion to prevent users from migrating to more comprehensive alternatives.
- The app maintains a focused utility-first release cadence, which protects the security niche but limits growth against broader PDF suites.
The SWOT
- Local-only processing ensures data privacy for sensitive professional documents
- Native Face ID integration provides secure password management for certificates
- Integration of basic PDF conversion tools could capture broader professional workflows
- Partnerships with certificate authorities could validate the app for enterprise-level adoption
Next best moves
Ship basic PDF conversion tools because users currently churn to all-in-one suites → increase session duration
The counter-intuitive read
The app's lack of cloud features is its greatest asset for professional trust…
Read the full takeFeature gaps
AI-powered document analysis (available in PDF Reader PDF Viewer & Editor) +1
Since the last report: The analysis shifted from a general security-utility focus to a defensive posture against all-in-one PDF suites, with a new roadmap priority to add conversion tools.
Bottom line
The app provides a secure, specialized signing utility, but its narrow focus creates a churn risk against all-in-one PDF suites, so the PM should prioritize adding essential conversion tools to retain professional users.
Unlock 2 critical frictions, 2 market threats and the analyst’s take.
Access the full report for freeReport last updated