SaaS product design and development, from idea to release
Design a focused first release, build the customer workflow and infrastructure it needs, and launch with ownership and support. Blueprint from $1,250; new SaaS builds from $15,000.
Updated · Reviewed by the AppDesign360 engineering team
AppDesign360 designs, develops, launches, and supports SaaS products for founders and growing businesses across the United States and Canada. Based in Teaneck, NJ and Queens, NY, we combine product discovery, interface design, engineering, deployment, and handover. A SaaS Blueprint is $1,250–$2,500. A scoped MVP starts at $15,000 with an indicative 8–10-week plan; exact scope and timing are confirmed before implementation. Existing prototypes begin with a separately scoped review.
A useful first SaaS release completes a workflow your intended customer values. We start with that workflow, map the user journey, and design a prototype before agreeing the implementation. Billing, permissions, data, integrations, and operations are scoped to the product rather than assumed from a generic feature list.
TourSyncer, TraderCongress, and ResumeFlight are product engineering examples built by our team. They demonstrate software and interface work; they are not presented here as independent client testimonials or proof that an engagement will produce customers, investment, or revenue.
We deliver remotely across the United States and Canada from our New Jersey and New York base, with local meetings by appointment. A proposal confirms milestones, acceptance checks, ownership, currency, provider charges, and post-launch support. Published prices are USD.
Already have a prototype? See <a href="/services/vibe-coding">AI App Review & Launch</a> for a paid review and retain, repair, or rebuild recommendation before commissioning completion. For internal workflows and client portals, see <a href="/services/software-development">custom business software</a>.
Design, engineering, and operation in one delivery plan
Product design before implementation. Map the core workflow and review a clickable prototype before committing to the build.
A written scope. Agree requirements, milestones, acceptance checks, price, dependencies, and a change process.
Your code and accounts. The repository, infrastructure, billing, and domain stay under your business control, with handover documented in the agreement.
Product engineering examples. Inspect TourSyncer, TraderCongress, and ResumeFlight to evaluate relevant work, without assuming a promised business result.
Critical paths checked. Include the relevant customer permissions, billing events, integrations, and recovery checks in the release plan.
Support after release. Agree included fixes, ongoing maintenance, response arrangements, and feature work before launch.
Recent work
TourSyncer
Product engineering example · tour operator SaaS
A tour-operator platform combining bookings, itineraries, invoicing, staff workflows, and CRM functions.
Multi-workspace application design and development
Operator workflows across booking and operations
Example of product capability; no client testimonial or acquisition result is claimed
A SaaS quote covers the customer journey and the operation behind it. These are common parts of a SaaS delivery plan. Your proposal states which apply, what is included, and the checks used to accept the release.
1. Product scope and user flows
We cut the idea down to the one workflow a customer will pay for, map every screen in that flow, and write down what is out of scope for version one.
2. Interface design
A clickable prototype you can put in front of real customers before any code is written, then a component library so every new screen looks like it belongs.
3. Multi-tenant architecture
Each customer's data is isolated at the database level with workspaces, roles, and permissions, with the relevant cross-account access checks included in testing.
4. Accounts and sign-in
Email and password, Google or Microsoft sign-in, team invitations, password resets, and two-factor authentication where your customers expect it.
5. Database and APIs
A PostgreSQL schema with migrations, backups, and indexes planned for growth, plus REST or GraphQL APIs your own team or partners can build on.
6. Subscription billing
Stripe plans, free trials, upgrades and downgrades, proration, failed-payment retries, invoices, tax settings, and a self-service billing portal.
7. Admin and back office
An internal dashboard to look up accounts, fix problems, issue refunds, and see revenue without asking a developer to run a query.
8. Integrations and AI features
Email and SMS, calendars, webhooks, data imports, third-party APIs, and language-model features with usage limits so costs stay predictable.
9. Infrastructure and security
Staging and production environments, automated deployments, encrypted secrets, rate limiting, security headers, error tracking, and uptime monitoring.
10. Marketing site and onboarding
The public website, pricing page, sign-up flow, and first-run experience, built with technical search foundations.
SaaS development best practices we build to
These are the habits that separate a product that survives its first thousand users from one that needs a rewrite. They are part of every build, not upsells.
Ship the smallest version someone will pay for. One core workflow done well. Everything else goes on a written phase-two list.
Isolate tenants in the database, not just the interface. Every query is scoped to a workspace, enforced with PostgreSQL row-level security or an equivalent guard, and tested.
Buy the solved problems. Stripe for payments, a proven provider for sign-in, managed PostgreSQL for data. Custom code goes where your product is different.
Treat money paths as critical code. Sign-up, checkout, upgrades, and cancellations get automated tests, and Stripe webhooks are verified and safe to receive twice.
Never deploy by hand. Every change goes through version control, automated checks, and a staging environment before it reaches customers.
Back up, then prove you can restore. Automated backups with a restore test before launch, because an untested backup is a guess.
Watch the product, not the inbox. Error tracking, uptime checks, and alerts report a problem before your customers do.
Give every person and service the least access they need. Secrets stay out of the code, admin actions are logged, and production data stays off laptops.
Measure activation from day one. Sign-ups, first key action, trial-to-paid conversion, and churn are tracked, so decisions rest on numbers.
Write it down. Architecture notes, environment setup, and a runbook, so any competent engineer can take over. That is what makes ownership real.
Pricing
SaaS Blueprint
$1,250 – $2,500
1–2 weeks
Discovery workshop and written requirements
User flows and a clickable prototype of the core screens
Data model, architecture plan, and third-party service list
Fixed-price quote and timeline for the build
Yours to keep; credited toward the build if you continue with us
SaaS MVP
From $15,000
8–10 weeks
One core workflow, designed and built end to end
Sign-in, workspaces, and roles
PostgreSQL database with automated backups
Stripe subscriptions and a customer billing portal
Admin dashboard, staging, automated deployment, and monitoring
Marketing site with pricing and sign-up
30 days of post-launch fixes
Full SaaS product
$22,500 – $40,000
10–14 weeks
Everything in the MVP
Multiple workflows or user types
Team invitations, permissions, and an audit log
Third-party integrations and webhooks
Email, SMS, or in-app notifications
Reporting, data export, and tiered or usage-based plans
SaaS platform
$40,000 – $60,000+
14–16+ weeks
Marketplace or multi-sided products
AI features with usage limits per plan
Data pipelines, search, and real-time updates
Public API with keys and documentation
Single sign-on and enterprise controls
HIPAA-aware data handling where health data is involved
Support and growth
From $20 / hour
Monthly retainer or hourly
Monitoring, security patches, and backups
Bug fixes and small changes
New features in two-week sprints
Performance tuning as usage grows
No lock-in: code and accounts stay in your name
Published prices are USD planning figures. SaaS MVPs start at $15,000 for one agreed core workflow. Your written proposal confirms the included features, fixed price, dependencies, milestones, and timing before implementation. Hosting, payment processing, and other services are billed by providers through your accounts. Existing-product review and completion are separately scoped. The $125 coaching session is advice for someone doing their own development; it does not include implementation or a launch commitment.
SaaS support after launch
Launch is the start of the work. A SaaS product needs care every month: frameworks and databases release security patches, Stripe and other providers change their APIs, customers find edge cases, and the roadmap keeps moving. We stay on as the engineering team behind the product for as long as you want us.
Every build includes 30 days of fixes at no charge. After that you choose a monthly retainer or hourly support at our custom software rate, from $20 per hour. There is no lock-in: the code and accounts are yours, and the documentation is written so another team could take over.
Monitoring and incident response
Uptime checks, error tracking, and alerts, with fixes shipped through the same staging and deployment pipeline as the original build.
Security and dependency updates
Framework, library, and database patches applied on a schedule, plus key rotation and access reviews.
Bug fixes and small changes
Copy edits, form changes, new report columns, and the edge cases real customers uncover.
New features in sprints
Your phase-two list, scoped and priced feature by feature, delivered in two-week cycles with a demo at the end of each.
Performance and scaling
Query tuning, caching, background jobs, and infrastructure sizing as usage grows, so the hosting bill tracks revenue.
Billing and customer operations
Plan and price changes, coupons, tax settings, refunds, and the admin tools your support team asks for.
Who we help
Booking and operations platforms
Scheduling, itineraries, invoicing, and staff management for service businesses, like TourSyncer for tour operators.
Data and intelligence products
Dashboards over public or proprietary data with pipelines, alerts, and fast search, like TraderCongress.
AI-powered tools
Document, writing, and matching products built on language models, like ResumeFlight.
Marketplaces
Two-sided platforms with listings, messaging, and payments, like the Hollow Purple B2B marketplace.
Healthcare and professional services
Client portals, intake, and secure messaging with HIPAA-aware data handling and BAA-ready vendors.
Internal tools turned into products
The spreadsheet or back-office system your company runs on, rebuilt so other companies can subscribe to it.
Four ways to build a SaaS product, compared
AppDesign360 fixed-price build
AI or no-code builder
Freelancer
In-house hire
Cost of a first version
From $15,000, fixed
Low monthly fees plus your own time
Usually hourly; total unknown
A salary before anything ships
Indicative first-release plan
8–10 weeks
Depends on product scope and validation
Depends on one person's availability
Months, after recruiting
Billing, security, multi-tenancy
In scope and tested
Capabilities vary; assess and test the actual product
Depends on the individual
Depends on the hire
Who owns the code
You, from day one
Often tied to the platform
You, if the contract says so
You
Coverage
Design, front end, back end, infrastructure
You
One person; a vacation stalls the launch
One role per hire
Best for
A scoped product release with design and engineering
Testing an idea before spending
Small, well-defined additions
Products with revenue to fund a team
Generalized from the projects we scope and take over. A good freelancer or an in-house team can be the right call for your stage.
Remote SaaS delivery, with a New Jersey and NYC base
We are based in Teaneck and work with founders and businesses across Bergen County and the rest of New Jersey. Most of the work happens over video calls and a shared staging link. When a whiteboard session helps, we meet in person by appointment in Teaneck, Hackensack, Paramus, Fort Lee, Englewood, and the towns around them.
New Jersey is a practical place to start a software company. The state's economy runs on industries that buy software: healthcare and life sciences, logistics and distribution, financial and professional services, and thousands of small businesses that still run on spreadsheets. New York City's customers and investors are a bridge away, without Manhattan rent in your costs.
Confirm registration, tax, and invoice requirements for your markets with your accountant. We implement the product settings agreed in scope from those requirements.
State programs for technology startups
The NJEDA runs an Angel Investor Tax Credit for people who invest in New Jersey technology companies, NJ Ignite rent support for startups in approved workspaces, and a program that lets unprofitable technology companies sell net operating losses.
Industries we know locally
Medical and dental practices, law and accounting firms, contractors, restaurants, and logistics operators across Bergen County: the businesses we already build websites and apps for, and often the first customers of a New Jersey SaaS product.
Veteran-owned and SBA-certified
Mango Consulting LLC is a Service-Disabled Veteran-Owned Small Business, which counts toward veteran-owned and supplier diversity spending goals for the companies and agencies that hire us.
What's Included
Discovery, user flows, and a clickable prototype before the build
Custom interface design and a reusable component library
Multi-tenant architecture with workspaces, roles, and permissions
Authentication: email, Google or Microsoft sign-in, invitations, and two-factor
PostgreSQL database, migrations, and automated backups
Stripe subscriptions, trials, invoices, and a customer billing portal
Admin dashboard for accounts, revenue, and support
Staging and production environments with automated deployment
Error tracking, uptime monitoring, and security headers
Marketing site, pricing page, and onboarding flow with SEO, AEO, and GEO setup
Documentation and handover, with code and accounts in your name
30 days of post-launch fixes, then optional support
How It Works
Week 0: free 20-minute scoping call, then a written scope, fixed price, and launch date
Weeks 1–2: user flows, clickable prototype, data model, and architecture you approve before the build
Weeks 3–8: build in two-week sprints, each ending with a demo on a working staging link (larger products add sprints)
Weeks 9–10: billing tests, security review, performance checks, and a beta with real users
Launch: production cutover, monitoring switched on, marketing site live
After launch: 30 days of fixes, then support and new features on a retainer or hourly
A first version (MVP) with sign-in, a database, Stripe billing, an admin dashboard, and a marketing site starts at $15,000 and takes 8–10 weeks. A fuller product with integrations, permissions, and reporting runs $22,500–$40,000. Platforms with AI features, data pipelines, a public API, or a marketplace model run $40,000–$60,000 or more. You get a fixed price after a free 20-minute scoping call.
Yes. AppDesign360 (Mango Consulting LLC) is a SaaS development company based in Teaneck, Bergen County, New Jersey. We design, build, and support SaaS products for New Jersey founders and businesses, with fixed-price builds from $15,000. TourSyncer, TraderCongress, and ResumeFlight are live products we built.
8–10 weeks for a focused first version: two weeks of design and architecture, six weeks of build in two-week sprints, and one to two weeks of testing and launch. Larger products take 10–16 weeks. The reliable way to shorten the timeline is to cut scope, not to add people.
Start with the SaaS Blueprint: a discovery workshop, user flows, a clickable prototype, a technical plan, and a fixed-price quote in 1–2 weeks for $1,250–$2,500. It is yours to keep and is credited toward the build if you continue with us. You can show the prototype to customers and investors before you commit to the build.
Yes. Start with a separately priced review of the actual product. We recommend what to retain, repair, or rebuild, then quote completion against agreed requirements. The $125 coaching sessions are advice for you as the builder, not an implementation or launch project.
Yes. The repository, hosting, database, Stripe account, and domain are opened in your name, and you receive documentation at handover. We sign IP assignment documents that transfer all work product to you.
Yes. We sign a mutual NDA before you share details and a master services agreement with IP assignment before work starts.
React and Next.js for the interface, Node.js on the server, PostgreSQL for data, Stripe for billing, and Vercel or AWS for hosting. It is a widely used stack, so you can hire for it and no single vendor controls your product. We use other tools when a requirement calls for them.
Plan for provider charges, maintenance, and further product work. Hosting, database, email, payment processing, and monitoring depend on provider, geography, and usage. We document an initial operating estimate and confirm support separately; ongoing hourly support is available from $20/hour with coverage defined in scope.
Every build includes 30 days of fixes. Ongoing support covers monitoring, security and dependency updates, bug fixes, small changes, and new features delivered in two-week sprints. You choose a monthly retainer or pay hourly from $20. The code and accounts stay in your name, so you can move support in-house at any time.
Yes. We start with a code and infrastructure review, tell you what is sound and what is risky, and give you a fixed price for the fixes. If the product is stable, we move straight to support.
Yes. We build language-model features such as document analysis, drafting, matching, and search into products, with usage limits per plan so costs stay predictable. ResumeFlight, an AI resume platform, is one of ours.
Tax treatment depends on the product, customer location, and applicable rules. Your accountant should confirm collection and registration obligations. We implement the billing settings and provider configuration agreed from those requirements.
Yes, by appointment. We are based in Teaneck and meet clients across Bergen County, including Hackensack, Paramus, Fort Lee, Englewood, and Bergenfield. Most project work runs over video calls and a shared staging link.
Three reasons. You can inspect live SaaS products we built (TourSyncer, TraderCongress, ResumeFlight) before you talk to us. You get a fixed price and a launch date in writing, so the budget risk is ours. And you work directly with senior US-based engineers in Eastern hours, with the code and accounts in your name from the first day.
Yes. Mango Consulting LLC is the legal entity, an SBA-certified Service-Disabled Veteran-Owned Small Business. AppDesign360 is the brand we use for SaaS, web, and app work. Same engineers, same quote form at appdesign360.com/quote.
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Tell us the customer problem, current stage, intended first release, and budget range.