JupiterApp & Custom Software Development in Jupiter
Jupiter's biggest employers are a hospital, a security-services headquarters and a distribution center, with an innovation hub in nearby Juno Beach. App369 builds mobile apps, web platforms, backends and AI features for northern Palm Beach County, remotely from Miami.
App369 is a founder-led software studio based in Miami, Florida. We build custom mobile apps, web platforms and AI features for businesses in Jupiter and beyond, working remotely on Eastern Time.
- Fiverr
- 5.0 · 127 reviews
- Own product
- Workspace369
- Fixed-price offers from
- $450
Same fixed prices wherever you are
Fixed scope, fixed price, paid upfront. The work happens in writing; no call needed.
- App Fix Ticketfrom $450One reproducible bug in an existing mobile or web app, diagnosed and fixed.
- AI-Built App Rescuefrom $450A Lovable, Bolt or Cursor app checked end to end in 3 days, then its worst problems fixed at a fixed price.
- Web App MVP Sprintfrom $6,000A scoped web app MVP in Vue/Nuxt or React, with a fixed quote after a $450 written scoping.
- Monthly Dev Subscriptionfrom $1,495/monthOne development request at a time, most back in about 2 business days. Pause or cancel anytime.
Serving Palm Beach County
A South Florida developer for Jupiter
About 1 hour 30 minutes by car from our Miami base (roughly 88 miles via I-95 or the Turnpike off-peak; approximate). App369 has no office in Jupiter; we work remotely and asynchronously on Eastern Time.
Starting something local? See our Palm Beach County tech and startup resources guide and our shortlist of app developers in Palm Beach County.
Local context
Jupiter business context
Jupiter's largest employers are in health care, security services and distribution. A business here is often a medical practice, a marine or hospitality company, or a supplier to those employers, and the software work tends to be scheduling, patient or customer portals and field tools.
Major local employers
- Jupiter Medical Center. About 2,540 employees.
- Allied Universal Security Services (headquarters). About 1,451 employees.
- Walgreens Distribution. About 600 employees in Jupiter.
- PSM, a Hanwha company. Turbine parts manufacturing, about 380 employees.
- NextEra Energy, parent of FPL (Juno Beach). About 5,598 employees (company figure as listed by the BDB); headquarters a few miles south.
Local resources
Resources for Jupiter founders and businesses
- 35 Mules
NextEra Energy/FPL innovation hub in Juno Beach offering rent-free workspace and a $100,000 non-dilutive grant for accepted startups.
- Palm Beach North Chamber of Commerce
Serves the northern county from Palm Beach Gardens, the next city south.
- Florida SBDC at FAU
Free consulting; ask about remote sessions.
We could not confirm an independent coworking space with its own website in Jupiter (see the resources guide).
These are independent organizations; listing them is not an endorsement or a partnership claim. Confirm details with each one before you apply.
What fits
Projects that fit Jupiter
Medical and wellness practices that want booking, intake and follow-up in one app
Marine, charter and hospitality businesses with seasonal demand
Suppliers to the area's large employers who need quoting or order-tracking tools
Why App369
Why Jupiter Businesses Choose App369
What Jupiter teams should know before working with App369.
Jupiter is the northern end of the county, about 1 hour 30 minutes from our Miami base, so remote collaboration is the default
Large local employers include Jupiter Medical Center, Allied Universal and a Walgreens distribution center
NextEra Energy's headquarters and the 35 Mules innovation hub are next door in Juno Beach
Fixed-price starting offers from $450 and larger projects with a 50% upfront, 50% on delivery payment split
Nearby Markets
Related Markets Around Jupiter
Nearby cities and the county hub, for context on neighboring markets.
County Hub
Palm Beach County
App369 builds custom mobile apps, web platforms, backends and AI features for Palm Beach County businesses and founders. Based in Miami, serving the county remotely, with written updates instead of meetings.
Nearby City
Palm Beach Gardens
App369 builds custom mobile apps, web platforms, backends and AI features for Palm Beach Gardens businesses. Remote and founder-led from Miami, with written updates instead of meetings.
What we build
Software Development Services in Jupiter
From marine and hospitality businesses along the Intracoastal to medical practices near Jupiter Medical Center, we build software for Jupiter teams that work remotely with us from the start.
Mobile Apps
iOS and Android apps built with Flutter from one codebase, from concept to App Store launch.
- iOS & Android
- Cross-Platform
- App Store Optimization
- Maintenance & Updates
Web Development
Fast websites and web applications, built for search and for phones first.
- Custom Design
- E-Commerce
- SaaS Applications
- SEO Optimization
Custom Software
Internal tools, integrations and back-office systems engineered around how your team already works.
- Enterprise Development
- API Integration
- Cloud Migration
- Technical Consulting
How it works
Our 4-Phase Development Process
A written scope and four clear phases keep Jupiter projects predictable.
Discovery
Understanding your vision, goals, and market requirements through stakeholder interviews and competitive analysis.
Design
Creating clear UI/UX with interactive prototypes you can click through before we build.
Development
Building with Flutter, Vue.js, Node.js, and GCP using 2-week Agile sprints with weekly milestone reviews.
Launch
Deployment to production with crash and uptime monitoring and ongoing maintenance.
Technologies
- Flutter
- TypeScript
- Node.js
- GCP
- Firebase
- Vue
- JavaScript
- Python
Questions
Frequently Asked Questions
Can we meet in person in Jupiter?
No. App369 works remotely and asynchronously from Miami, with written updates and shared progress builds. There are no standing meetings; live calls are available at $100 per 15 minutes.
Is App369 a Jupiter company?
No. App369 is based in Miami. We serve Jupiter clients remotely and have no office in Jupiter.
Is there startup support near Jupiter?
35 Mules in Juno Beach, a few miles south, offers rent-free workspace and a $100,000 non-dilutive grant for startups it accepts. Details and eligibility are on its website, and we list it in our Palm Beach County resources guide.
How long does a typical project take?
It depends on scope. As a rough guide, a marketing website takes 4-8 weeks, a web application 2-4 months, and a mobile app 3-6 months. Every Jupiter project starts with a written scope and milestone plan, so you know the timeline before any build work starts.
Do you provide ongoing support?
Yes. After launch we offer maintenance that covers bug fixes, iOS and Android OS updates, security patches, dependency upgrades and small feature work, so your Jupiter app keeps working as the platforms change.
What's your pricing model?
App369 uses project-based pricing with a 50/50 payment structure: 50% upfront and 50% on completion. Current ranges are published on our fee structure page, and smaller fixed-price packages are available for well-defined work.
Can you work with existing projects?
Yes. We take over existing codebases, especially Flutter and Firebase apps, for code audits, bug fixes, new features and migrations. Jupiter businesses with an app that stalled or a developer who left can start with an audit before committing to a larger build.
Your Development Partner
Simon Dziak
As founder of App369, I personally oversee every project we take on, from scoping to launch. I build with Flutter, Firebase and Google Cloud, and I also built and run Workspace369, a client-management platform for freelancers and small businesses. Based in Miami, Florida, we serve clients across Jupiter and nationwide.
Start Your Jupiter Project
Fiverr reviews / 95 on app work
What buyers said about working with Simon
“Syzmon is a very hard working and technically nimble developer. He works day and night to complete the work. This was a large project and required adjustments along the way and Syzmon was flexible and helped discover optimal solutions and adjusted as we learnt better solutions.”
A buyer in the United States, July 2022. App development on Fiverr “Great work! Szymon helped our mobile app concept come to life and we are very pleased with the outcome. He was great to communicate with throughout the process, making himself available when I needed him, and was quick to respond to feedback. We will definitely use him again. Thanks Szymon!”
Rebecca, United States, June 2022. App development on Fiverr “This seller was professional and seems to have understood what i did not understand about the project. he was VERY trustworthy as I gave him many opportunities to do very little for the gig i hired him for but he did not cut corners at all.”
A buyer in the United States, May 2022. Custom order on Fiverr
Read the whole story
- Sixteen five-star reviews from one buyer: mobile apps, app design and a Shopify store (Mark, United States)
- A large custom app build, delivered on the back end and the front end (A buyer in the United States)