Geneva-based Proton launches iOS and Android apps for its E2EE cloud storage service, offering 1GB for free, 200GB for $4 per month, or 500GB for $10 per month
Proton, a privacy startup best known for its Proton Mail encrypted email service, has just announced that its end …
Context & Ripple Effects
Proton had already broadened beyond encrypted email: it launched a paid-account encrypted calendar beta and later grouped calendar, storage, and VPN into a unified plan lineup. Mobile storage access makes that portfolio more usable across the devices where customers manage files.
The new storage tiers also sit alongside Proton's broader subscription positioning, rather than treating encrypted storage as a desktop-only add-on to Proton Mail.
First-order effects
- Proton customers on iOS and Android can now access its end-to-end encrypted storage service from mobile devices, with a 1GB free entry tier and paid capacity options.
- Proton gains a mobile touchpoint for storage that complements its existing mail, calendar, and VPN products.
Second-order effects
- The $4 and $10 monthly storage options give Proton another path to convert free users into paid subscribers within the plan structure established by its rebrand.
- Proton Mail users evaluating the wider suite can weigh storage capacity alongside the encrypted calendar and VPN services Proton has assembled.
Third-order effects
- If Proton continues bringing each service to major device platforms, its product strategy shifts from standalone privacy tools toward a cross-device encrypted subscription suite.
- Capacity-based tiers make storage a recurring monetization layer within that suite, with product breadth and device availability becoming more important to retention.
The trend: Privacy-focused services are expanding from single-purpose encrypted tools into multi-product, cross-device subscription ecosystems.