Hong Kong — Building since 2014

Digital products
that actually ship

Scriptstash Limited

SaaS platforms, iOS apps, and eSIM technology built by a focused team in Hong Kong.

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Who We Are

About Us

Building useful software, one product at a time

Scriptstash Limited is a Hong Kong-based technology company building digital products people actually use. We focus on mobile apps, SaaS tools, and e-commerce — making things that are fast, private, and genuinely helpful.

Every product we ship is designed for real users and maintained by a small, opinionated team that cares about the details. No bloat, no committees — just software that works.

10+ Years Building
6 Live Products
100k+ Users Served
What We Do

Our Services

End-to-end product development, from idea to App Store

📱

iOS & Mobile Apps

Native SwiftUI apps built for iOS 17+. Clean architecture, SwiftData persistence, StoreKit subscriptions, and App Store-ready submissions from a team that's been through the review process hundreds of times.

☁️

SaaS & Backend

Node/TypeScript backends, REST APIs, Shopify integrations, and Bull queue processing. Reliable infrastructure designed to run quietly in the background — no surprises at 2am.

🌍

eSIM & Connectivity

End-to-end eSIM provisioning, from Shopify storefront to carrier activation. Real-time support, automatic retries, and a fulfilment pipeline battle-tested across 190+ countries.

What We've Built

Our Products

Apps and tools we've shipped and continue to grow

CoinDing

CoinDing

Real-time push notifications for App Store revenue events. Get instant alerts for subscriptions, renewals, cancellations, and refunds. No SDK required — set up in 2 minutes.

Learn more →
Migraine Tracker

Migraine Tracker & AI Diary

The migraine tracker built for people in pain. One-tap attack logging, AI-powered trigger detection, doctor reports, and smart daily check-ins. 100% private — all data stays on your device.

Learn more →
RelAI

RelAI — Relationship Insights

Your personal AI relationship psychologist. Paste any text conversation and get communication scores, tone maps, dual perspectives, and tools to communicate better. Built on Gottman Method & NVC.

Learn more →
WA NoContact

WA NoContact

Send WhatsApp messages to any phone number without adding them to your contacts. Quick preset messages, paste & go, and full privacy. 100% free, no ads.

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Lumi

Lumi — Chore Chart & Allowance

Chores, but joyful. Kids do chores, Lumi's AI checks the photo, and they earn screen time, allowance, and rewards you choose. A chore chart and screen-time reward app the whole family loves.

Learn more →
🌐

SimSwift

Instant eSIM data plans for 190+ countries. Buy, install, and go — no physical SIM swap, no roaming fees. Powered by our own provisioning pipeline.

Visit simswift.com →

From the Scriptstash Blog

Tips, guides, and updates from the Scriptstash team

Read the Blog →
Get In Touch

Contact Us

Questions, partnerships, or just want to say hi

🏢 Office

Unit 1603, 16th Floor
The L. Plaza
367 – 375 Queen's Road
Central Sheung Wan
Hong Kong

✉️ Email

General inquiries:
[email protected]

SimSwift support:
[email protected]

🌐 Location

Based in Hong Kong, shipping software to users in 190+ countries. We work with partners across Asia-Pacific, Europe, and North America.