
MintMargin — Know Your Real Profit on Every Card
MintMargin tracks your trading card inventory from purchase to sale and calculates your real profit after fees, shipping, and taxes — not just revenue.
@MintMargin · X
The full gallery
Tech stack
60 projects

MintMargin tracks your trading card inventory from purchase to sale and calculates your real profit after fees, shipping, and taxes — not just revenue.
@MintMargin · X

Track money received, expenses, and balances for fund management without spreadsheets.
@Susu_Omo · X
Shipped my first SaaS MVP today! Bargeld Sucher is a simple fund management app built to help track money received, expenses, and balances without spreadsheets. Built with: Next.js, Prisma I’d love your honest feedback. 🔗 #BuildInPublic #NextJS #SaaS

Calculate portfolio rebalancing strategies and tax-optimized allocation decisions.
@mvo_guy_travis · X
I've noticed an explosion of new (free) financial tools from relatively amateur sources. Is this the vibe coded future?

SPL Pay Per Suite: live project quotes and lab-run jobs. CDDG:Split, Zero Range Wave, Blackjack, shard family. Public results, commercial packages. Impressive Compression..... see
@SlidPhiLabs · X

Valkyrie recovers revenue lost to failed Stripe payments. Connect your account, see what you're losing, pay only 25% of what we recover.
@BruceOToole11 · X
Here’s Valkyrie - a commission based payment recovery tool for Stripe businesses that goes beyond Stripe Smart Retires

Upload your ad metrics CSV to diagnose why mobile app revenue dropped.
@XiaAIBuilder · X
来了来了,我用 Claude 和 Codex 做了一个广告收入诊断工具。 上传前后两期 AdMob CSV,可以对比收入、eCPM、匹配率和展示率,再按国家、广告格式、广告位等维度找出变化主要来自哪里。 目前网页和 Android 版都已经跑通: 欢迎体验,也欢迎交流~

Expense tracker with manual entry, fully private, no data sharing.
@codewzubair · X
ExpenseSumo is for anyone tired of budgeting apps that demand bank access. Manual entry, fully private, just a clear view of where your money goes:

Calculate SIP & lumpsum mutual fund returns with LTCG/STCG tax in seconds. Free forever. No ads. Covers equity, debt & hybrid funds. Built for Indian investors.
@RahulGupta8999 · X
Just shipped 🚀 Free SIP & lumpsum calculator for Indian investors with actual LTCG/STCG tax breakdown. No ads. No sign-up. Forever free. Would love your feedback! 🙏🇮🇳 #BuildInPublic #MutualFunds #SIP

Track commission payments and flag when payouts are short, missing, or clawed back.
u/JustinMoose · Reddit
I built an app that flags when commission earners get underpaid, unpaid, or clawed back I sell insurance for a living, and a while back I realized I had no real way to know whether the carriers actually paid me correctly. You bind a policy, and 30-60 days later some commission shows up on a statement, and you just kind of trust the number. Across hundreds of policies and a few carriers, that's impossible to track in your head. So I built PayoutVerify. You log what you sold and what you expe

Monitor Core Web Vitals and measure how slowdowns impact your revenue.
@AuditJet · X

One place to upload, clean, validate, and trust your CRM data. Read-only HubSpot integration. Free trial, no credit card.
@EmilyinBos · X

Model your equity, taxes, and net worth with free calculators and paid scenario planning.
charleswcho · HN
Continuum – Financial simulations for DIY multimillionaires