Billing & plans
Subscriptions that just work
Plans, trials, upgrades, proration, tax and failed-payment retries, all on Stripe. Try the switch.
MonthlyYearly2 months free
Starter
$29
per month
Growth
$79
per month
Scale
$199
per month
Service 04 / 08
SaaS & Product Engineering
We're a SaaS development company that works as your product engineering team through a long run of decisions, most of them easy to get wrong. We validate an MVP quickly, then scale it with the multi-tenancy, billing, security and observability a real SaaS business depends on.
(01)Overview
What is SaaS / Product Engineering?
SaaS product engineering is building a multi-tenant software-as-a-service product end to end: accounts, subscription billing, dashboards and the reliability customers expect from something they pay for every month. Arrowbin builds SaaS MVPs for founders and for teams turning an internal tool into a product; a focused MVP usually launches in 8–14 weeks.
- 01Multi-tenantBuilt to scale
- 02BillingSubscriptions ready
- 03MVP-firstLaunch, then grow
Is this for you?
If customers will pay for it monthly, let's talk.
- Founders launching a SaaS MVP
- Teams adding multi-tenancy, roles and billing
- Products scaling from their first users to many
- Companies turning an internal tool into a product
What you get
- 01
Ship an MVP fast
Get a usable, sellable product in front of customers in weeks, not quarters.
- 02
Built to scale
Multi-tenant architecture, queues and caching designed for thousands of accounts.
- 03
Revenue ready
Subscriptions, metered billing, trials and plans wired up with Stripe.
- 04
Product analytics
Usage tracking and dashboards so you can make data-driven product decisions.
(02)Built to scale
From 10 customers to 10,000
Shortcuts feel fast until the product takes off. Drag the customer count up and compare a quick build with one designed to scale from day one.
yourproduct.app / admin
- Customers
- 10
- MRR
- $490
- Speed (p95)
- 148ms
- Errors
- 0.02%
Page speed as you grow
Built to scale Shortcut
Users notice: over 1s
101001,00010,000
What we build at 10+
One codebase, one database, tenant ID on every row. Cheap to run, ready to grow.
Infra / month
$98
Gross margin
80%
- 10+Multi-tenant core
- 100+Billing
- 1,000+Caching & queues
- 4,000+Autoscaling
- 9,000+Enterprise ready
Illustrative figures at $49 per customer per month. The point is the shape: architecture decided early is what stays cheap later.
(03)Plumbing included
The parts customers pay for without seeing
Your core feature wins the demo. Billing, teams, security and uptime keep the subscription. They come built in, not bolted on later.
Teams & roles
Invite the whole team
- Maya R.Owner
- Tom K.Admin
- Lina S.Editor
- Omar F.Viewer
Sign-in & SSO
Secure by default
Continue with GoogleContinue with MicrosoftSAML SSO2FA on
Usage metering
Limits & overages
Seats8 / 10
API calls41k / 50k
Storage3.1 / 5 GB
Audit log & webhooks
Every action, on record
- 09:41maya@changed plan to Growth
- 09:42tom@invited lina@ as Editor
- 09:44apiwebhook invoice.paid
- 09:47lina@exported 3 reports
- 09:51omar@signed in with SSO
- 09:52systemnightly backup done
Monitoring & backups
Know before customers do
99.9%
30 days agoAlerts, logs, daily backupsToday
(04)Scope it right
What goes in your MVP?
Most SaaS MVPs are built too big. Tap features in or out and watch the timeline. This is the same conversation we have in week one.
Estimated time to launch
12–14weeks
Solid first version
Still a sensible MVP. Anything more and it's worth asking what can wait.
08142436 wks
Tap to add or remove
★ Always in: the workflow customers pay for, sign-in and billing. Estimates are rough ranges for one senior team; your real plan comes after a free discovery call.
(05)Process
How we deliver
We cut the MVP to what proves the idea, ship it, then scale what customers use most.
- 1
Step 011–2 weeks
Validate
We pin down the smallest product that proves your idea works.
- 2
Step 028–14 weeks
Build MVP
We ship a focused first version you can start selling.
- 3
Step 034–8 weeks
Scale
We harden the architecture, billing and security for real traffic.
- 4
Step 04Ongoing
Grow
We keep adding features, guided by how customers really use the product.
(06)Selected work
Web platforms we've shipped
(07)How we work together
Three ways to start
Build the MVP as a fixed project. Once customers pay, a product team keeps shipping, or a care plan keeps it up.
- Most popular
Project
A SaaS MVP: your core workflow, with billing built in.
Best for founders who need something to sell, soon.
- Scope cut to what customers pay for
- Stripe billing from day one
- A fixed estimate before we start
- For growing products
Product team
A product team on your roadmap after launch, month to month.
Best once paying customers start asking for more.
- Features ranked by customer usage
- SSO and team roles when buyers ask
- Scale the team up or down
- After launch
Care plan
Uptime and backups for a product customers pay for.
Best for stable products with a small team.
- Daily backups, checked monthly
- Error alerts and uptime monitoring
- Security and dependency patches
(08)Guides
Read before you build
- Product13 min read
SaaS Development Cost in 2026: From MVP to Full Platform
What a SaaS product costs to build and run in 2026: our ranges from MVP to full platform, what multi-tenancy and billing add, and monthly running costs.
Read the guide→ - Product12 min read
MVP Development Cost in 2026: How to Work Out Your Budget
What an MVP costs in 2026 and why: the formula behind the number, what to cut, what it costs to run, and when a prototype is the smarter first step.
Read the guide→ - Product12 min read
How Long Does It Take to Build an MVP in 2026?
How long it takes to build an MVP in 2026: typical timelines by type, the week-by-week build, what affects the schedule, and how to launch faster.
Read the guide→
A focused SaaS MVP usually takes 8–14 weeks to launch. We build the core workflow that proves value first, then expand once you have paying users and their feedback to work from.
Yes. We regularly audit, refactor and scale products other teams started. In most cases we can improve performance and reliability without a full rewrite.
Yes. We set up plans, trials, metered usage and the full Stripe billing lifecycle, including invoicing and dunning.
Your core workflow, sign-up and login, and billing go in from day one, usually with a simple onboarding flow and an admin view. Teams and roles, public APIs, SSO, white-labelling and native apps can usually wait until paying customers ask for them.
Usually Next.js and Node.js with PostgreSQL, Redis for caching and queues, Stripe for billing, and AWS or Vercel for hosting. It's a proven, well-supported stack that's easy to hire for later. If you already have a stack, we work with it.
Yes. We build in tenant isolation, role-based access, encryption, 2FA and audit logs, and add SSO when enterprise buyers need it. We also set up monitoring, alerts and daily backups so issues are caught early.
Yes. You own 100% of the source code, accounts and infrastructure from day one. There's no lock-in, and we document everything so your own team can take over at any point.
(10)Pairs well with
Often combined with
- Service 07Cloud, DevOps & HostingDeploy pipelines and monitoring that keep up as your accounts and traffic grow.
- Service 05UI/UX DesignOnboarding and core screens designed so trial users reach the point where they'd pay.
- Service 06AI AutomationAI features inside your product, such as assistants that answer from each customer's own data.
(11)Your move
Let's build
something loud
Tell us who will pay and for what. We'll come back with a first MVP scope and what it costs, usually within a day.
hello@arrowbin.comor write to us directly