WPForms, Gravity Forms & Ninja Forms store submissions in plaintext. Sensitive data remains readable on the server.
Patient intake. Legal documents. HR records. Insurance applications. Standard form plugins store submissions where your server and host can read them.
ZK Forms encrypts every field before it leaves the visitor’s browser. Your server receives ciphertext. Only you hold the key.
Patient intake, medical history, insurance data. HIPAA requires protecting this at rest and in transit.
Client intake, case details, confidential disclosures. Attorney-client privilege doesn’t survive a plaintext breach.
Employment applications, background authorizations, payroll data. PII exposure creates significant liability.
Intake questionnaires, session notes, sensitive disclosures. Among the most protected health data under HIPAA.
Policy applications, financial statements, SSNs. Regulatory requirements demand encryption at rest.
Student records, enrollment forms, counseling intake. FERPA and state privacy laws apply.
Nothing leaves their device yet.
AES-256 encrypts the data before anything is sent.
Unreadable without your key. Your host cannot see it either.
Your private key lives in your browser only. It never leaves.
Swipe to compare
| Feature | ZK Forms | WPForms | Ninja Forms | Gravity Forms |
|---|---|---|---|---|
| End-to-end encrypted submission payload | ✓ | ✕ | ✕ | ✕ |
| Server stores ciphertext, not readable values | ✓ | ✕ | ✕ | ✕ |
| Private decryption key stays in the browser | ✓ | ✕ | ✕ | ✕ |
| HIPAA-ready architecture | ✓ | ✕ | ✕ | ✕ |
| Drag-and-drop form builder | ✓ | ✓ | ✓ | ✓ |
| Conditional logic | ✓ | Paid add-on | Paid add-on | ✓ |
| Multi-step forms | ✓ | Paid add-on | Paid add-on | ✓ |
| 20+ field types, including signature, file upload and repeater | ✓ | Not stated | Not stated | Not stated |
| Encrypted key backup and restore | ✓ | ✕ | ✕ | ✕ |
| Client-side CSV export | ✓ | ✕ | ✕ | ✕ |
| Email notifications without form data | ✓ | Not stated | Not stated | Not stated |
| No reCAPTCHA required | ✓ | ✕ | ✕ | ✕ |
| Starting price | $25/yr | $49/yr | $99/yr | $59/yr |