Plans for Everyone
Full E2EE on every plan. Security is never behind a paywall.
From Japan, unmatched in the world.
PRIVACY IS NOT A FEATURE. IT'S BY DESIGN.
Independent messenger taking on the three giants
A startup, from Japan
Premium Free Until August 31, 2026
All Premium features are completely free during the launch period. No credit card required.
Download on the App Store
GET IT ON Google PlayFrequent Updates Ahead
Arc is in active development with frequent updates. Core messaging features are fully functional, while advanced features like Tracker are being rolled out progressively. Your feedback shapes what we build next.
Essential
Free E2EE messaging with on-device Rosetta auto-translation
- ✓Signal Protocol E2EE (PQXDH)
- ✓Sealed Sender
- ✓Key Sync
- ✓Mesh Network (BLE)
- ✓IGF: 1 min – 7 days (Always ON)
- ✓1 device
- ✓File transfer up to 3GB
- ✓Rosetta auto-translation (on-device)
- ✓Ad-supported
Premium
Paid subscription: Rosetta ads can be skipped or watched to support development · Required during free access and trials
- ✓Everything in Essential
- ✓Paid subscription: Rosetta ads can be skipped or watched to support development
- ✓IGF: 1 sec – 52 weeks (Toggleable)
- ✓Up to 3 devices
- ✓Remote device logout
- ✓Native nuance, red corrections, gold praise + 2 ideal examples (TranslateGemma + Gemini 3.5 Flash-Lite; asks every time)
- ✓Server cleanup: Every 6 hours
Intelligence
Premium plus consent-based Rosetta Hybrid coaching
- ✓Everything in Premium
- ✓IGF: 1 sec – 52 weeks (Toggleable)
- ✓Up to 3 devices
- ✓Rosetta Intelligence coaching (TranslateGemma + Gemini 3.6 Flash; asks every time)
- ✓Server cleanup: Instant
- ✓Priority support
Feature Comparison
| Feature | Essential | Premium | Intelligence |
|---|---|---|---|
| E2EE (Signal Protocol) | Full | Full | Full |
| PQXDH (Post-Quantum) | Full | Full | Full |
| Sealed Sender | Full | Full | Full |
| Key Sync | Full | Full | Full |
| Mesh Network | Full | Full | Full |
| Rosetta automatic translation | Yes | Yes | Yes |
| Rosetta Native coaching | — | TranslateGemma + Gemini 3.5 Flash-Lite (asks every time) | TranslateGemma + Gemini 3.6 Flash (asks every time) |
| File Transfer | 3GB | 3GB | 3GB |
| Devices | 1 | 3 | 3 |
| IGF Range | 1 min – 7 days | 1 sec – 52 weeks | 1 sec – 52 weeks |
| IGF Toggle | Always ON | ON/OFF | ON/OFF |
| Server Cleanup | Daily (midnight) | Every 6 hours | Instant |
| Remote Logout | — | Yes | Yes |
| Rosetta language ads | Yes | Required during free access and trials | Optional support ad when paid; can skip |
| Like Notifications | Not available | Bulk ON/OFF | Per-user / Per-group |
| Hide Online Status | — | — | Yes |
| Badges | — | 5 badges | 10 badges |
| Price | Free | $8/mo | $25/mo |
Plan badges can be selected only while that exact plan is active. Permanently earned supporter and event badges remain available on every plan and can be hidden at any time.
This is a beta release, and unusual ads may also be shown. Essential, Premium free access, and active trials require one rewarded ad before the shared model’s initial download and one before each shared model update. Paid Premium and Intelligence may skip each of those ads or watch voluntarily to support development. Language selection changes never require an ad.
Plans for Everyone
E2EE, Key Sync, XEdDSA signatures, Sealed Sender, and Mesh Network are available on all plans including the free Essential plan. Arc believes security should be a fundamental right, not a premium feature.