Software craftsmanship for products people love
Slash Dev Slash Null is an independent software studio led by principal engineer Xinjiang Shao. We build product-quality software end to end — from the 3 a.m. architecture call to the pixel in your pocket.
- Focus
- Consumer & SaaS products
- iOS, web, and AI-native surfaces.
- Experience
- 10+ years shipping
- Grocery retail, blockchain, non-profits, sports tech.
- Flagship
- GroceryTrack.food
- AI receipts, iOS & Android apps, MCP server.
Featured productGroceryTrack.food
AI-powered grocery receipt tracking and spending insights. Snap in-store receipts or forward digital ones from Instacart, DoorDash, Walmart, and more — GroceryTrack reads every item, price, and category, tracks price changes, and watches your pantry. No loyalty cards. No store APIs.
AI receipt scanner
Paper + digital, one inbox.
Price & spend insights
360+ stores, personal inflation.
Pantry view
Freshness countdowns, recipe ideas.
iOS & Android
Native camera, widgets, offline.
MCP server
Your data, inside Claude & ChatGPT.
habibi
A voting machine for rooms full of people.
Pocket-sized handsets let everyone vote at once, privately, with results hidden until the reveal. A central hub tallies groups of 4 to 300 and puts the results on a screen or projector — no Wi-Fi or phones required.
Three voting modes
Yes/No, Like/Neutral/Dislike, Scrum poker.
Hidden until reveal
Everyone votes at once, no anchoring.
4 to 300 people
Local hub, or cloud relay for remote folks.
No Wi-Fi needed
E-ink handsets on ESP-NOW radio.
Shipping help for ambitious teams
From product discovery to production launch, we partner with founders and product teams to cut through scope, choose the right stack, and move quickly without cutting corners.
- Grocery & retail eCommerce
- Consumer iOS & web apps
- AI-native products & MCP
- Non-profit & civic tech
- Sports & assessment tooling
- Blockchain & crypto infra