InspirationManaging digital subscriptions is messy — people sign up for trials, forget about them, and end up losing money. Our BytePass community also highlighted how group-buying and cost-sharing make subscriptions affordable, but tools to track and optimize them don’t exist. That sparked the idea for ByteVault Pulse: a mobile app that gives users clarity, control, and savings on their recurring digital expenses.
What it does
ByteVault Pulse is a smart subscription tracker that helps users: Monitor subscriptions and recurring charges in one place Get alerts before renewals so they never miss cancellation deadlines Discover group-buy and savings opportunities through community insights Unlock premium features (family sharing, unlimited subscriptions, advanced analytics) via RevenueCat-powered in-app purchases
The goal: help users save money, stay organized, and monetize sustainably.
How we built it
Frontend: Flutter for cross-platform delivery (iOS + Android) Backend: Supabase (Postgres + Auth) for user data, plus Firebase Cloud Functions for lightweight automation Payments: RevenueCat SDK to handle subscriptions, paywalls, and entitlements Notifications: OneSignal for smart alerts on renewals, cancellations, and deal drops Design: Figma + Tailwind-inspired UI with focus on clean, minimal dashboards
Challenges we ran into
Getting RevenueCat paywalls integrated cleanly with free and premium tiers Syncing external subscriptions (manual entry vs. auto-fetch) in a simple way Balancing feature creep vs. shipping fast for the hackathon timeline Designing group-buy functionality without overwhelming new users
Accomplishments that we're proud of
Successfully shipped a working MVP with real in-app purchases using RevenueCat Designed a viral launch hook (community group-buy feed) that’s unique in this space Built a polished, intuitive UI that makes finance feel friendly, not intimidating Learned how to integrate multiple SDKs (RevenueCat + OneSignal + Supabase) in under a month
What we learned
How powerful RevenueCat is for handling subscriptions without reinventing billing logic The importance of building a clear paywall strategy early (HAMM Award alignment!) That users respond better to simplicity + savings, rather than complex finance dashboards Hackathon timeboxes force us to prioritize — “ship, then polish” works best
What's next for ByteVault Pulse
AI insights: personalized tips on which subscriptions to cancel or downgrade Family plans: manage shared subscriptions across multiple users Deeper integrations: banking APIs for automatic subscription detection Public launch: roll out on TestFlight and Play Store with feedback loop Monetization experiments: mix of freemium, premium tiers, and optional group-buy marketplace
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