P7M Chiaro: Signed File Viewer

Received a .p7m file that won’t open? P7M Chiaro opens Italian signed documents, e-invoices and PEC messages, and tells you in plain words what is inside and whether the signature is intact.

Your documents never leave the device; only certificate identifiers are sent for the revocation check (can be turned off in Settings). No account, no ads.

WHAT YOU CAN OPEN
• Signed .p7m files (CAdES), signed PDFs (PAdES) and signed XML (XAdES)
• FatturaPA e-invoices, also inside a .p7m: supplier, customer, lines, VAT and payment in plain view
• PEC messages (.eml, postacert.eml included): envelope, receipts and every attachment, signed ones too
• ZIP archives with several documents
• From Mail, Files or any app via Share
• On iPhone, iPad, Duo and Mac (Apple silicon), with a layout that adapts to the screen
• On iPad, Duo and Mac: two documents side by side; on iPad and Mac, multiple windows too (Pro)

SIGNATURE AND CERTIFICATE, EXPLAINED
For each signature you see who signed, when, and whether the content has changed since it was signed. The certificate is checked against the EU trust lists; for Italy, that is the list published by AgID. When a check is not available, the app says so clearly and never shows it as passed.

The result is informative and technical: P7M Chiaro does not issue certifications and does not replace the verification required by the procedure you are following.

PRIVACY
• Reading and verification on device only
• The network is used only to download trust lists and for the revocation check (OCSP/CRL), which sends certificate identifiers only, never document content; you can turn it off in Settings
• Face ID lock
• Deleting a document from the app leaves the original file in Files, Mail or iCloud where it is

FREE
• Open, read and verify every document
• A list of the invoices you open
• PDF of a single invoice, in Chiaro view or Tabular format; the original XML is never changed
• Payment and IBAN checks: the app flags an IBAN that fails the formal check or differs from the same supplier’s earlier invoices
• A sample Excel with your first 10 invoices
• Folders and tags

Invoice checks are formal: always verify the details before paying.

P7M CHIARO PRO
For people who handle invoices every month and work across documents. One-time purchase, no subscription.
• Your period’s invoices as Excel, one PDF or a ZIP for your accountant
• Invoice summary
• Side-by-side comparison of two documents, on iPad, Duo and Mac
• ZIP export of multiple documents
• Multiple windows on iPad and Mac

Pro features carry a Pro badge. Restore your purchase from Settings > P7M Chiaro Pro.