Compare providers
Side-by-side comparison for any two listings. Pick by provider id (e.g. mullvad, ivpn, feather). Updates live as curators re-grade.
| Threema | Session | |
|---|---|---|
| Category | tools | tools |
| Subcategory | Messaging | Messaging |
| Grade | B | B |
| Editor's Pick | — | — |
| Tagline | Swiss paid one-time messenger. Phone-number optional, anonymous IDs, no metadata. | Decentralised messenger — no phone number, no email, onion-routed. |
| Fees | $5 one-time · Swiss · audited · no phone required | Free · GPLv3 |
| KYC posture | light_kyc | anonymous_signup |
| Highlight tags | PAIDAUDITEDSWISS | FREENO-PHONE |
| Feature tags | non_custodialaudited | open_sourcenon_custodialaudited |
| Web | https://threema.ch | https://getsession.org |
| Tor | — | — |
| Last verified | 2026-05-13 | 2026-05-12 |