Every messaging app assumes digital literacy.
304 million migrants' parents don't have it.
UN 2024: 304M international migrants. AARP 2025: 46% of 65+ can't navigate apps despite owning smartphones.
2015
of 65+ had smartphones
2025
of 65+ have smartphones
But
apps designed for them
Hardware arrived. Software didn't. That's the gap.
WhatsApp can do calling. But it also does chat, status, channels, communities, payments, AI. Every extra button is a wrong turn for a 70-year-old.
Zvonok has one screen with names. Tap = call.
✅ Big names she recognizes
✅ Full-screen ring when called
✅ No chat, no settings, no login
✅ Child sets it up remotely
Android (native APK) + iPhone (PWA in Safari)
No App Store approval needed for v1.
You don't market to grandma. You reach her daughter in Berlin.
Child installs on parent's phone during visit. Tells siblings. Each sibling has in-laws. One install = 3-5 referrals.
Russian diaspora FB groups: 2M+ members in Finland, Germany, Israel. Indian expat groups. Filipino OFW forums.
Russian speakers in Nordics (founder's network) → India (18M) → Philippines (10M) → LatAm (11M)
per call
WebRTC P2P
per family/mo
At 1K on $5 VPS
gross margin
At $3 ARPU
Backend, Android APK, iOS PWA, admin panel. Security audited.
Real calls between Finland ↔ Russia. Measuring: setup time, call success rate, weekly frequency.
Do families call weekly? If yes: retention. If not: pivot to scheduled check-ins.
Target metrics by June: 100 families, 60%+ W1 retention, 3+ calls/week per family
→ The child trusts you with their parent's phone. That's not a feature — it's a relationship.
→ Once installed, Zvonok becomes the only app mom uses. Switching cost = teaching her something new.
→ Network effect: every family member pulls in spouses' families. One user seeds 3-5 households.
Pre-seed · 18 months to product-market fit
Mobile eng + growth lead
Multi-region TURN relay
Native app + App Store
RU HI ES TL AR
Milestone: 10K families · 60% W1 retention · $15K MRR → raise Seed