LenDen subscriptions with Supabase RLS and Razorpay webhooks
How LenDen stores tier in profiles, verifies Razorpay subscriptions server-side, and keeps ledger data isolated with row-level security.
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Case studies & deep dives.
Long-form writing on shipping real products — from hospitality finance UIs to Capacitor field apps and the studio site itself.
Capacitor plugins in production: barcode, torch, and contacts
Lessons from shipping yagnik-scanner, yagnik-flashlight, and yagnik-contacts on Ionic field apps—permissions, OEM quirks, and npm maintenance.
Virtualized finance grids and COA trees at scale
Row identity, windowed fetches, and tree navigation for hospitality FP&A grids when the chart of accounts is thousands of nodes deep.
Subscription gates, ads, and Pro tiers on a SaaS product
How LenDen balances free tier limits, Razorpay Pro subscriptions, and optional AdSense—without ads on paid workflows.
Building satanilabs.com with Next.js 16 and a writing hub
How I shipped the SataniLabs portfolio on Next.js 16 App Router—route groups, motion, SEO, the spider backdrop, and a markdown writing hub.
Designing dense finance UIs for hospitality FP&A
Patterns for React finance grids, chart of accounts trees, and hospitality FP&A dashboards—lessons from anonymized enterprise work.
Driving design system adoption with Angular and Storybook
How we used Storybook, visual contracts, and incremental migration to get teams onto a shared Angular component library.
Capacitor, barcodes, and offline field apps in hospitality
Building Ionic OTM field apps with Capacitor—barcode scan flows, plugin choices, and offline-first patterns for operators on the floor.
LenDen and ledger-first accounting for small business
Why LenDen treats the ledger as source of truth—double-entry flows, party balances, and building accounting software that stays honest.