What kinds of projects does App369 build?

Mobile apps in Flutter and Swift, web apps and SaaS, Firebase and Node backends, AI features and MCP servers for Claude, Stripe billing, and Shopify stores.

Which of these did Simon build himself?

Each card says. The open-source repos and the projects marked "built by Simon" are his. The rest were delivered with contractors or partner developers, and the card names the arrangement.

Can I hire App369 for something similar?

Yes. Most work starts as a fixed-price offer with the price on the page. Anything else is quoted in writing. We reply by email, usually within one business day.

Work / 2020–2026 / 21 projectsApps, AI and platforms, shipped since 2020.

Our own products, client builds and open-source work, from a 2021 neural-network image app to MCP servers for Claude. Each project says plainly whose it was.

Featured · Our own product · 2023–now

Workspace369

An all-in-one workspace for service businesses: CRM, proposals, invoicing and payments, scheduling and a shared email, SMS and voice inbox. Designed, built and run by App369.

Flutter app on iOS and the web, live on the App Store
Firebase backend split into 20+ Cloud Functions codebases
Stripe billing, Twilio voice and SMS, inbound email security

Read the case study → App Store ↗

2026 · Our own product

3693

Music app

A private music app: search, a now-playing screen with background playback, a queue, playlists, liked songs, a cloud library and listening stats, in dark and light themes.

Background audio with a managed playback queue
Typed Cloud Functions backend behind Firebase Auth
Automated walkthrough that screenshots every screen in both themes

FlutterFirebaseTypeScriptjust_audioHive

Case study →

2026 · Open source by Simon Dziak

SaaS MCP Connector

AI integration

An MCP server that lets Claude use a SaaS API safely: every call is scoped to one user's workspace, writes need explicit confirmation, and the HTTP transport is rate limited.

TypeScriptMCPClaude

Case study →GitHub ↗ Fixed price: MCP Connector for your SaaS ($2,500)

2026 · Open source by Simon Dziak

Claude Agent Reliability Kit

AI agents

A reference build for making a Claude tool-use agent dependable in production: loop caps, schema-enforced output, a durable retry queue, prompt caching and per-call tracing.

TypeScriptClaude API

GitHub ↗ Fixed price: AI Feature or Agent Build ($2,500)

2026 · Open source by Simon Dziak

Scrape to Dashboard

Data pipeline

A polite crawler feeding a validated SQLite ETL with price history, published as a static dashboard and CSV export. Demonstrated on a public scraping sandbox.

TypeScriptSQLite

GitHub ↗ Fixed price: API Integration ($1,200)

Client project

BILSTEIN

Mobile & web app

An app for finding, configuring and choosing BILSTEIN suspension products for a given vehicle, on mobile and the web.

MobileWeb

BILSTEIN ↗ Fixed price: Web App MVP Sprint (from $6,000)

Client project

Chicago Pneumatic

Mobile & web app

A data visualization dashboard, plus a mobile app for searching inventory.

MobileWebDashboards

Fixed price: Web App MVP Sprint (from $6,000)

2023 · Client project, built by Simon

Bull Horn GPS Alarm

Mobile app

A remote control for GPS vehicle and asset alarms. Each alarm is saved once with its number and password, then every command is a single tap instead of a cheat sheet of SMS codes.

One-tap commands that compose the alarm's SMS code
Quick Siren Locate with a confirm step
Alarms stored on the device, contact picker for numbers

FlutterSQLite

Case study →

2022 · Client project, App369 with partner developers

Pitch

Short-video iOS app

A short-video app for pitching yourself or your work: jobs, castings, services and more. Record with a custom camera, post to a feed, get discovered and take private video requests.

Camera with Metal-rendered filters, speed and countdown
Feed, discover, follow, comments and direct messages
Posts with categories, location and job-application links

SwiftMetalAWS AmplifyFirebase

2022 · Client project, App369 with partner developers

Life Tomb

Mobile app

A digital legacy organiser. People record assets, documents, financial details and key contacts, write final wishes, keep a diary and a photo timeline, and invite trustees.

FlutterBLoCOAuthREST API

2022 · Startup client, App369 with partner developers

Bundlr

Mobile app & backend

One feed for newsletters, podcasts and news, with saved "bundles" you can share. Simon wrote most of the backend that ingests podcast feeds and newsletters.

Podcast player with background audio
Newsletter ingestion and podcast scraping in Cloud Functions
Full-text search with Typesense

FlutterFirebaseNode.jsTypesense

2021 · Our own R&D

Deep Dream

AI image app

Our first AI build. A Flutter app sends a photo to a Python API, a queue worker runs DeepDream on a convolutional neural network, and the dreamed image comes back to save to the gallery.

PyTorch DeepDream across several CNNs (VGG, ResNet, GoogLeNet)
Flask API with token auth and a Redis job queue
Style and parameter controls in the app

FlutterPythonPyTorchFlaskRedis

Case study →

2020–21 · Our own product, co-built with contractors

DG Card Digital Collection

Mobile app with on-device ML

Scan a trading card with the camera and on-device text recognition matches it against the card database. Then build decks, track a collection and trade with other players.

ML text recognition matched against a synced card database
Collection, deck builder and trading feed with chat
In-app purchases and ads

FlutterFirebase MLFirestoreMobX

Case study →

2020–21 · Client project

Artificial Grass Masters

Field sales app

An estimator for an artificial-turf installer. Reps measure a yard on the map, price grass, borders, gravel and pavers on the spot, and close jobs with photos, a signature and a rating.

Area measurement on Google Maps
Cost tables for every product line
Job sign-off with e-signature, photos and review prompt

FlutterGoogle MapsFirebase

Case study →

2020 · Client project, built by Simon

Shopify store

A curated store for handcrafted fine jewelry, based in Canada.

Shopify

saltfinejewelry.ca ↗ Fixed price: Shopify Speed & Checkout Tune-Up ($750)

Questions

Questions about this work

What kinds of projects does App369 build?: Mobile apps in Flutter and Swift, web apps and SaaS, Firebase and Node backends, AI features and MCP servers for Claude, Stripe billing, and Shopify stores.
Which of these did Simon build himself?: Each card says. The open-source repos and the projects marked "built by Simon" are his. The rest were delivered with contractors or partner developers, and the card names the arrangement.
Can I hire App369 for something similar?: Yes. Most work starts as a fixed-price offer with the price on the page. Anything else is quoted in writing. We reply by email, usually within one business day.

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