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Usage-Based Billing with Stripe — Next.js 16 Guide
A guide to implementing metered/usage-based billing in Next.js 16 using Stripe's current Meters API — covering how meters, prices, subscriptions, and meter events connect, building a pay-as-you-go pricing model with a free tier, and handling invoicing webhooks. Clarifies the deprecated legacy usage-records API vs. the current stable approach. Published on DevStacked, my developer blog covering practical Next.js and SaaS implementation guides.
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The brief was simple. Show a new personalized news feature.
The obvious solution was to show a few clicks in the UI as you choose your topics. Clear, but not very interesting.
So I pulled that moment out of the interface first and turned it into a cloud of topics. You get the idea before you even see the product, then the video drops you back into the real UI and shows where it lives.
I really like these tiny decisions. The feature stays the same, but it feels easier to get and a lot more fun to watch.
Pulling the topic cloud outside the UI makes the feature instantly clearer.
Hello everyone, this is a prototype of a B2B Marketplace that can help construction companies sell more, manage easily supplier contacts and quotes request from theirs clients, the platform can be adapted to many fields in construction starting from metal to interior home suppliers. reach me out if you think this is useful for your business so i can customize it for you 😊
Quote requests usually need a status per supplier—sent, answered, revised or expired—so buyers can compare offers in one place. Did you model each supplier’s response separately from the original request?
Trax Omni: Multi-Company Sales CRM + Mobile App, Built From Scratch
THE PROBLEM
Small and growing sales teams run on WhatsApp chats, Instagram DMs, spreadsheets and memory. Leads come from five places, nobody knows who replied to whom, follow-ups are forgotten, and the owner can't see what's actually in the pipeline. Every slow reply is a lost customer.
WHAT WE BUILT
Trax Omni, a complete sales CRM product, designed and built from scratch by UI Trax:
Product website: explains the product, shows industry templates, and lets a business create its own workspace
Today dashboard: total leads, open pipeline, won revenue, win rate and the next actions to take
Leads: source, stage, value, owner and score for every inquiry, with import and filters
Pipeline: drag-and-drop stages from Inquiry to Won, with custom stages
Sales Copilot: ask in plain words ("show my hot leads with no activity for 3 days"); it finds leads and drafts follow-ups, and nothing changes until you confirm
Tasks & follow-ups: open, overdue and completed tasks, so no lead goes cold
Automations: round-robin lead assignment, follow-up tasks and stage-based next steps
Reports & forecast: pipeline distribution, weighted forecast and revenue targets
Team & roles: separate owner, manager and employee views; each person sees only what they should
Campaigns: Meta and TikTok lead campaigns, with their leads brought into the pipeline
Quotes & invoices, WhatsApp inbox and email connected to each lead
Mobile app for iOS & Android with a full English and Urdu interface
HOW IT WAS BUILT
Multi-company setup: each business gets its own private workspace
Backend in Node.js with a PostgreSQL database
Mobile app in React Native (Expo)
Secure sign-in with Google Workspace / Microsoft SSO and MFA
Automated test suites for the backend, the mobile app and the dashboards
STATUS
Built and in final launch testing. The screens show sample data from the interactive preview.
