Doximity
Signal
| Feature | Doximity | Signal |
|---|---|---|
| Pricing | Free only | Free only |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.3 / 5 | 4.6 / 5 |
| Best For | physicians, nurses, healthcare-professionals, medical-recruiters | privacy-advocates, journalists, activists, security-conscious-users |
| Founded | 2010 | 2014 |
| Physician Network | ✓ | ✗ |
| Telehealth | ✓ | ✗ |
| E Fax | ✓ | ✗ |
| Secure Messaging | ✓ | ✗ |
| News Feed | ✓ | ✗ |
| Credential Verification | ✓ | ✗ |
| End To End Encryption | ✗ | ✓ |
| Group Chats | ✗ | ✓ |
| Voice Calls | ✗ | ✓ |
| Video Calls | ✗ | ✓ |
| Disappearing Messages | ✗ | ✓ |
| Screen Security | ✗ | ✓ |
✓ Doximity Pros
- Largest physician network in the US
- HIPAA-compliant video calls
- Free e-fax and secure messaging
- Verified professional credentials
✗ Doximity Cons
- Limited to US healthcare professionals
- Premium features for recruiters only
- No patient-facing features
✓ Signal Pros
- Industry-leading encryption
- Completely free and open-source
- No ads or data collection
- Cross-platform support
✗ Signal Cons
- Smaller user base than WhatsApp
- Limited business features
- No channels or bots
The Verdict
Doximity is built for physicians and nurses, with a focus on physician-network and telehealth. Signal targets privacy advocates and journalists and leads with end-to-end-encryption and group-chats.
Both tools use custom enterprise pricing — you'll need to contact sales for a quote, which makes direct cost comparison difficult.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Bottom line: Signal has a slight overall edge — but if largest physician network in the us matters most to you, Doximity may still be the right call.