Project Overview
Dansal App – දන්සල් is a Sri Lankan mobile application developed by the Cyber Yakku team to help users easily discover:
- 📍 Dansal locations (free food distribution spots)
- 🏮 Thorana & Vesak decorations
- 🎶 Bhakthi gee (devotional music events)
The app also allows users to contribute and share locations, making it a powerful community-driven platform during Vesak season. As a fast-growing platform, ensuring secure and verified users became critical to maintaining data quality and trust.
The Challenge
During major religious events like Vesak and Poson, thousands of Dansal are organized across Sri Lanka. The team faced key challenges:
- ❌ Fake users and spam submissions are affecting data accuracy
- ⚠️ No reliable way to verify real users during signup
- 📈 High traffic spikes requiring scalable authentication
- 🌐 Users with limited internet access need simple verification
The Solution: SMS-Based User Verification
The Dansal app integrated Text.lk’s communication APIs to implement a secure and scalable user verification system:
- 🔐 OTP (One-Time Password) for instant phone verification
- 📲 SMS API for reliable message delivery across Sri Lanka
- ✅ Verify API for streamlined authentication workflows
With the Dansal app, combined with Text.lk’s SMS infrastructure, the platform successfully solved their challenges.
Implementation Highlights:
- 📱 OTP-based signup & login system
- ⚡ Instant SMS delivery for verification codes
- 🔄 Retry & fallback handling for high delivery success
- 🇱🇰 Optimized for local telecom networks
- 🧭 Community-submitted event listings
- 🔔 Real-time updates and notifications
- 🇱🇰 Sinhala-friendly user experience
Role of Text.lk (Communication Partner)
Text.lk played a critical role as the main communication partner by enabling:
- 🚀 Verify 100K+ users in real-time during peak traffic
- 🛡️ Prevent fake accounts and spam submissions
- 📩 Ensure OTP delivery even on low-bandwidth devices
- 📊 Maintain high success rates for verification requests
This ensured users stayed informed even without internet access, significantly improving engagement.
📊 Results & Impact
- 📥 100,000+ verified users
- 🔒 Significant reduction in fake accounts & spam
- ⚡ Fast and reliable OTP delivery across Sri Lanka
- ⭐ Improved trust and user experience (4.7 rating)
- 🤝 Strong community participation with user-submitted data
🎯 Key Takeaways
- OTP-based verification is essential for community-driven platforms
- SMS remains the most reliable authentication method in Sri Lanka
- Combining SMS API + Verify API ensures both speed and security
- Scalable verification systems are critical during high-traffic events
App Links
iOS: Dansal App (App Store)
Android: Dansal App (Google Play)
Partnership Highlight
This success story demonstrates how Text.lk’s SMS, OTP, and Verify APIs help startups:
- Secure their platforms
- Scale user onboarding
- Build trust with real users