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I will build your mobile and desktop app for ios, android, windows and mac
Chad.J
About this gig
Got an app idea? I'll build it for iOS, Android, Windows, and Mac.
Most developers ship to one platform. I build cross-platform from a single codebase, so your app reaches everyone without hiring four developers.
What I've built:
Soufflé & Cupcake catering software with cost-per-portion calculation and production planning
Sounds Great a commercially released audio app on a hand-written C++ DSP engine, sold with license-key activation
Taki-Taki real-time voice translation, 37 languages, ten conversation modes
Lorekeeper a fully offline AI assistant with on-device inference and encrypted storage
What you get: working software, full source code, complete ownership. Senior-level architecture, no agency overhead.
I scope carefully before starting, send written updates at each milestone, and tell you honestly if something won't work.
Bigger builds: message me first and I'll scope it and send a custom offer with milestones.
Get to know Chad.J
Chad.J
AI App, Chatbot and Automation Developer
- FromUnited States
- Member sinceAug 2026
- Avg. response time4 hours
Languages
English
I build AI tools and automations that do the boring work for you — custom chatbots, RAG assistants trained on your own documents, GPT/Claude integrations, and workflow automations that replace hours of manual effort. I build and ship apps across all four major platforms: iOS, Android, Windows, and Mac. My own builds include an on-device AI assistant with RAG, a tiered recipe platform, an audio app, and a real-time translation app. Tell me the outcome you want — I'll hand you working software, and you own everything I build.
My Portfolio
FAQ
1. How much does a full app actually cost?
Depends on scope. A lean MVP typically runs $5–15K, a full polished cross-platform app $20–40K+. My packages cover prototypes and MVPs. For anything larger, message me and I'll scope it and send a custom offer broken into milestones.
2. Do I own the code?
Yes, completely. Full source code and IP transfer on delivery, included in every package. You're never locked into me for future changes.
3. Which platforms do you build for?
iOS, Android, Windows, and Mac — cross-platform from a single codebase. That's how you get all four without paying four separate developers.
4. Do you handle app store submission?
Yes, as an add-on. You'll need your own developer accounts (Apple $99/year, Google Play $25 one-time). I handle build configuration, signing, store listing, and submission.
5. What if my idea is bigger than these packages?
That's the most common way I work. Message me with your platforms, must-have features, and rough budget, and I'll come back with a real plan and a milestone-based quote.
