Amazon seller toolkit
EcomStal
The complete research kit for Amazon & AliExpress sellers — keywords, products, reviews, profit.
- Keyword Research
- Product Research
- Profit Calculator
- Review Exporter
- Rank Tracker
- Image Downloader
12K+ sellers
Visit Upstal is a small team building two things: a growing family of SaaS products, and the bespoke software our customers can't buy anywhere else.
Each product is a weapon we built because we needed it ourselves. They work alone — and they compound together.
Our SaaS shipped us into deep water with data, scrapers, payments, and retention. That same team takes on client work — under one condition: we have to believe it's worth building.
End-to-end product build — from positioning to production. The same muscle that shipped our own SaaS, pointed at your idea.
Internal tools, dashboards, automations. When the off-the-shelf stack doesn't fit — we build the thing that does.
Pipelines that pull clean data from anywhere on the web — and keep working.
Browser-native software that lives where your users already work.
A real product in six weeks — not a prototype, something you can charge for.
Longer retainers with commerce teams who need a partner that speaks marketplace.
Opinionated defaults, proven in production. Every tool earns its place across our own SaaS and every client build we take on.
Next.js
React
TypeScript
Tailwind CSS
Redux
Framer Motion
Three.js
Vite
GSAP
Sass
Vue.jsNext.jsReactTypeScriptTailwind CSSReduxFramer MotionThree.jsViteGSAPSassVue.js
Node.js
Django
FastAPI
Express
PostgreSQL
MySQL
Redis
MongoDB
Prisma
GraphQL
Supabase
tRPCNode.jsDjangoFastAPIExpressPostgreSQLMySQLRedisMongoDBPrismaGraphQLSupabasetRPC
Docker
DigitalOcean
Vercel
AWS
Cloudflare
Nginx
GitHub
Figma
Stripe
Firebase
SentryDockerDigitalOceanVercelAWSCloudflareNginxGitHubFigmaStripeFirebaseSentryFive phases. No handoff theater. No Gantt charts the team pretends to follow.
We talk to your operators, shadow your workflows, and write the brief. If you already have one, we rewrite it until it's sharp.
Architecture, data model, UI skeleton. We commit to decisions early so the build phase is muscle memory, not discovery.
Daily Loom updates, weekly releases to a staging URL. You watch the product grow instead of waiting for a reveal.
Real users touch the product. We instrument, watch, and patch the rough edges before the retrospective.
The software keeps getting better after we leave — or we stay on retainer and keep adding plate to the bar.
Three products. Thousands of users. All built and shipped from our studio.
End-to-end Chrome extension suite for Amazon sellers — from product research to listing optimisation.
Multi-channel lead generation platform with 9 scrapers, automated email campaigns, and real-time reporting.
40+ profit tools and a proven 6-phase roadmap that takes Amazon sellers from launch to six figures.
Indicative ranges. We scope every engagement to your actual problem — and say no when it isn't a fit.
A bounded sprint to turn an idea into a validated, clickable artifact with real infrastructure.
A real product you can charge for. Fixed scope, founder-led, shipped to production in six weeks.
A squad embedded into your roadmap. We stay until the software compounds without us.
Both. Our main output is SaaS — EcomStal, LeadStal, 10xProfit. Client work funds the experiments and keeps us sharp on real-world problems.
Anywhere from a two-week prototype to a six-month enterprise build. We turn down work that isn't a fit rather than stretch to accept it.
Yes — all three are self-serve. EcomStal for Amazon & AliExpress research, LeadStal for outreach, 10xProfit for scaling FBA. Free tiers available.
Dhaka, Bangladesh. We work remotely with clients across the US, UK, EU, and Australia. Timezones are a feature, not a bug — we cover hours your team doesn't.
New engagements usually kick off 2–4 weeks out. For urgent builds, we keep one sprint slot open per quarter. Ask.
Standard mutual NDA before we see anything sensitive. We also default to not name-dropping client work publicly unless you want us to.
We take on a limited number of client engagements each quarter to ensure uncompromising quality. Let's discuss your vision.