# Sign PDF by Certificate — Scan, sign and share docs

> Digitally sign PDFs with certificates or handwritten signatures, scan documents, and export securely. (iPhone/iPad app by JIRI CHOMAT.)

- Source: https://appshunter.io/ios/app/sign-pdf-by-certificate/id6762870118 (this page in markdown: same URL + `.md`)
- Developer: [JIRI CHOMAT](https://appshunter.io/developer/1780274254)
- Category: Business, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17 · 7 MB
- Languages: German (Germany), Arabic, American English, French (France), Italian, Japanese, Dutch, Polish, European Portuguese, Russian and 5 more
- Released: 2026-04-29
- Data updated: 2026-09-07
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sign-pdf-by-certificate/id6762870118/reviews.md

## What is Sign PDF by Certificate?

Sign PDFs on iPhone with a .p12 or .pfx certificate, or draw a handwritten signature when needed.

Scan paper into PDF, place the visible signature exactly on the page, unlock saved passwords with Face ID, and export a signed copy without changing the original file.


Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Sign PDFs with .p12/.pfx certificates
- Apply handwritten signatures
- Scan paper documents to PDF
- Precise signature placement
- Securely export signed documents
- Face ID password unlock

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Monthly | $2.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime | $39.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/sign-pdf-by-certificate/id6762870118/reviews.md

### 5/5 — PERFEITO

*2026-09-05*

Já usei algumas vezes achei ótimo estava em busca de como assinar pelo celular…

### 5/5 — Such a find

*2026-06-17*

The one PDF signing tool I’ve ever needed. No Acrobat B.S., no shady online tools. This works brilliant with my PFX certificate.

**Developer response:** Thank you so much for the fantastic review! We’re delighted that the app gives you a straightforward way to sign PDFs with your PFX certificate.

## Frequently asked questions about Sign PDF by Certificate

### What types of digital certificates does Sign PDF by Certificate support?

Sign PDF by Certificate supports .p12 and .pfx certificate files for digital signing. This allows for secure and verifiable electronic signatures on your documents.

### Can I sign PDFs with a handwritten signature using Sign PDF by Certificate?

Yes, you can draw a handwritten signature directly within the app when a digital certificate is not required or preferred. This offers flexibility for various signing needs.

### Does Sign PDF by Certificate allow scanning paper documents into PDFs?

Yes, the app includes functionality to scan paper documents and convert them into PDF format, which can then be signed digitally or by hand.

### How does Sign PDF by Certificate handle password protection for saved passwords?

Sign PDF by Certificate utilizes Face ID to unlock saved passwords, providing a secure and convenient way to access your credentials when needed.

### What are the subscription options for Sign PDF by Certificate?

Sign PDF by Certificate offers a weekly subscription for $0.99 and a monthly subscription for $2.99. These plans provide access to premium features and services.

### Is Sign PDF by Certificate available on devices other than iPhone?

Yes, Sign PDF by Certificate is supported on Mac, iPhone, and iPad, allowing you to manage and sign documents across your Apple ecosystem.

### How often is Sign PDF by Certificate updated?

The app was last updated on July 22, 2026, with version 1.15. This indicates a recent update, suggesting ongoing development and support.

### What is the age rating for Sign PDF by Certificate?

Sign PDF by Certificate has an age rating of 4+, making it suitable for a wide range of users. This rating suggests minimal content concerns.

## Version history (last 5 releases)

### 1.17 — 2026-09-01

Fixed: signing a PDF that already carries a signature from Adobe Acrobat, Microsoft Word or an e-signature service (compressed PDF structure) failed with “This signed PDF cannot be updated safely.” Such documents can now be counter-signed.
Fixed: an intermittent “The signature page reference could not be resolved.” error when signing larger documents.

### 1.16 — 2026-08-25

Fixed: adding your signature to a PDF that was already signed by someone else could fail with “The signature page reference could not be resolved.” Counter-signing such documents now works.

### 1.15 — 2026-07-22

Accented letters (ě, č, ř, ž, ů) now appear exactly in the visible signature, thanks to a built-in font. A new “Exact diacritics” setting lets you switch back to simplified letters if you prefer.

### 1.13 — 2026-07-14

Accented letters (ě, č, ř, ž, ů) now appear exactly in the visible signature, thanks to a built-in font. A new “Exact diacritics” setting lets you switch back to simplified letters if you prefer.

### 1.12 — 2026-07-08

Accented letters (ě, č, ř, ž, ů) now appear exactly in the visible signature, thanks to a built-in font. A new “Exact diacritics” setting lets you switch back to simplified letters if you prefer.

## Apps similar to Sign PDF by Certificate

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [ArtiFin - AI účetní](https://appshunter.io/ios/app/artifin-ai-ucetni/id6758920269) | — | Free | Business |
| [Litera One](https://appshunter.io/ios/app/litera-one/id6751215899) | 5.0 (5) | Free | Business |

## More apps by JIRI CHOMAT

- [easyReality - mapa nemovitostí](https://appshunter.io/ios/app/easyreality-mapa-nemovitosti/id6738445446)
- [easyFaktury](https://appshunter.io/ios/app/easyfaktury/id6739961999)
- [Tires Lab](https://appshunter.io/ios/app/tires-lab/id6740140054)
- [Gluten Checker](https://appshunter.io/ios/app/gluten-checker/id6740210917)
- [Nontoxic](https://appshunter.io/ios/app/nontoxic/id6741117134)
- [Hypotéky](https://appshunter.io/ios/app/hypoteky/id6745117355)

All apps by JIRI CHOMAT: https://appshunter.io/developer/1780274254

## Related topics

[certsign](https://appshunter.io/ios/topics/certsign)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*