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Android app for obtaining and using virtual phone numbers for calling and texting. Integrated VoIP APIs and secure messaging for reliable communication. Implemented Firebase for authentication, notifications, and real-time data handling. Optimized performance and UI for smooth calling, texting, and privacy-focused user experience.
The network for creativity
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Onlyplans is a simple web and mobile app that helps you make plans with friends without the usual group chat chaos.
Why we built it:
Most plans die in long message threads. We wanted a faster, clearer way to decide and move forward.
Features:
✅ Create plans without long chats
✅ Friends tap I’m in or I’m out
✅ Counter plans and settle with a coin flip
✅ Use polls for group decisions
✅ Shared spaces for friends and crews
Tamper-Proof Content Blocker & Device Protection App
System-Level Mobile Threat Protection & Local Network Filtering
The Challenge
Standard Android content filters are easy for users to bypass, disable, or uninstall, while third-party remote VPNs introduce severe latency and data privacy risks.
The Solution & Impact
Built a Kotlin-native Android application that enforces device-level content filtering and anti-tampering protection locally without sending user traffic to external servers.
Local VPN & DNS Filtering: Intercepts system-wide DNS packets via a local VpnService TUN interface to block prohibited domains locally with zero latency.
System-Level Security Hooks: Utilized Android Accessibility Services and Device Admin APIs to prevent unauthorized uninstallation, force-stopping, or setting bypasses.
Tamper-Proof Lock: Enforced settings locking via an encrypted, randomized password generator to ensure non-bypassable enforcement.
Tech Stack: Kotlin | Android SDK | VpnService | Accessibility APIs | DeviceAdminReceiver | Jetpack Compose
Doing the DNS filtering locally through VpnService instead of routing traffic out is the right call. Curious how the Accessibility Services and Device Admin combo went with Play review, that pairing usually draws a lot of policy questions on anti-uninstall apps.
:Introducing MyVerse✨️, a private social platform built for people who want real connection, not just another feed to scroll. It brings together personal journaling, secure messaging, anonymous conversations, and shared experiences like watch parties for movies, music, and study sessions, along with collaborative doodles and gaming, all in one clean, thoughtfully designed app.
Key Features:
▪︎ Personal Diary with mood tracking, AI assisted writing, and privacy controls for each entry
▪︎ End to end encrypted chat
▪︎ Pen Pal Mode for anonymous chats and message bottles, with identities revealed only when both sides agree
▪︎ Watch Party, syncing video playback for up to five people in real time
▪︎ Doodle, a live collaborative canvas with built in mini games like Chess, Pictionary and beyond.
▪︎ Bits, a short form video feed
▪︎ Time Capsules to lock away memories and messages for the future
Outcome:
A fully functional, polished app that puts privacy and creativity at the center instead of public performance. Happy to discuss the design process or technical decisions behind it. ⚡️