SaaS you will not rewrite.
SaaS development with billing, tenancy and auth done right. Fixed price for v1.
-
Senior engineers
No juniors. No middlemen.
-
Fixed price
Overruns are on us.
-
Live in weeks
Weekly demos on staging.
-
You own the code
100% of the IP, day one.
Yarify is a SaaS development company. We build the parts every SaaS needs and most first versions get wrong: multi-tenant data isolation, authentication and roles, Stripe subscriptions and invoicing, an admin dashboard, product analytics and a deployment pipeline. Version one is a fixed-scope project with one fixed written quote; if our estimate was wrong, the extra hours are our cost. After launch, a dedicated team can keep shipping monthly.
The SaaS foundation, built in
-
Multi-tenancy
Customer data kept apart
-
Auth and roles
Teams, invites, permissions
-
Stripe billing
Plans, trials, tax, invoices
-
Admin dashboard
Support without SQL
-
Product analytics
See what users do
-
CI/CD
Safe, boring deploys
Why SaaS products break after launch
-
Tenancy bolted on later
One customer sees another’s data. Fixing it means touching every query.
-
Billing that drifts
Webhooks missed, access and payments out of sync. We handle them idempotently.
-
Roles as an afterthought
The first enterprise customer asks for permissions the data model cannot express.
-
No admin, no analytics
Support runs SQL by hand and nobody knows which features get used.
From idea to paying customers
-
Free call · Day 1
Your customers, pricing model and must-haves.
-
Scope and fixed quote · Week 1
A written v1 scope and one price.
-
Foundation · Early weeks
Tenancy, auth, billing and CI/CD first.
-
Core product, weekly demos · Weekly
The features that make customers pay.
-
Launch · Typically weeks 8–12
Launch checklist, monitoring, first customers.
-
Iterate · After launch
Next version fixed-price, or a monthly team.
Fixed price. We eat the overruns.
For your first SaaS version, the quoted price for the agreed written scope is the price you pay. If our estimate was wrong, the extra hours are our cost. Changes you request are quoted separately before work starts.
- Stripe, cloud and repo accounts in your name
- Monthly team with 2 weeks’ notice after launch, if you want it
Our SaaS stack
| Layer | Default |
|---|---|
| Frontend | Next.js, React, TypeScript. Marketing site and app can share a codebase |
| Backend | Node.js / TypeScript or Java Spring Boot |
| Database | PostgreSQL or MongoDB, tenancy model chosen first |
| Billing | Stripe Billing, Checkout, Customer Portal, Tax |
| Infrastructure | GCP or AWS, Docker, CI/CD, in your own account |
What SaaS development costs
Using industry MVP ranges as a guide: simple SaaS around $15k–$40k, medium $40k–$100k, complex or AI-native above $100k. These are derived from MVP data, not SaaS-specific surveys.
Billing complexity, integrations and roles move it most. More in our SaaS development cost guide.
SaaS we have built
-
Astrooly: Paid SaaS in Three Languages
Multilingual astrology SaaS: natal chart engine, AI-assisted readings, Stripe checkout in 3 languages with country pricing, server-side referral attribution, admin dashboard, GTM analytics.
-
Cold Outreach That Stays Out of Spam
Custom cold outreach and email campaign platform: multi-step sequences, SPF/DKIM/DMARC checks, inbox warm-up and rotation, LLM-personalised first lines, reply detection and campaign analytics.
-
Five Platforms, One Hour a Month
Internal platform for a marketing agency: generates short-form video from three inputs and publishes to YouTube, Instagram, Threads, Reddit and Telegram. Spring Boot, Next.js, MongoDB.
Questions buyers ask us
How much does it cost to build a SaaS product?
Using industry MVP ranges as a guide, simple SaaS lands around $15k–$40k, medium $40k–$100k and complex or AI-native above $100k. We do not publish rates; you get a fixed quote, and our estimation overruns are our cost.
How long does it take to build a SaaS MVP?
A focused SaaS MVP typically launches in 8–12 weeks from signed scope, with a deployed build on staging early and weekly demos. Complex billing, heavy integrations or regulated data take longer. The timeline is in the written quote.
Should I build my SaaS with no-code tools first?
Sometimes. To test whether anyone will pay, a no-code prototype can be the cheapest experiment. With paying customers, tenancy, billing edge cases and performance usually outgrow it. We often rebuild validated prototypes, using them as a living spec.
What is multi-tenancy and do I need it?
One application serving many customer organisations while keeping their data strictly separate. Almost every B2B SaaS needs it. The decision is how: shared tables with a tenant key, separate schemas or separate databases. We choose with you upfront.
Can you integrate Stripe subscriptions and invoicing?
Yes. Stripe Billing is our default: subscriptions, trials, coupons, seat or usage pricing, tax, invoices and the customer portal. For Astrooly we built Stripe checkout in three languages with country-based pricing.
Who owns the SaaS code and the Stripe account?
You do. The repository, cloud account and Stripe account are in your name from day one, and you own 100% of the code and IP. You can revoke our access at any time.
Keep reading
-
Mobile app development
iOS and Android apps from one React Native or Flutter codebase. A senior team takes it from scope to App Store review, at a fixed price or as a monthly team.
-
SaaS development cost
What it costs to build a SaaS product in 2026: launch ranges, the SaaS-specific features that add hours (billing, multi-tenancy, SSO), region rates and running costs.
-
SaaS
Multi-tenant SaaS products with Stripe billing, onboarding flows and churn analytics, built by senior engineers who own the code from schema to deploy.
-
Astrooly: Paid SaaS in Three Languages
Multilingual astrology SaaS: natal chart engine, AI-assisted readings, Stripe checkout in 3 languages with country pricing, server-side referral attribution, admin dashboard, GTM analytics.
-
MVP development
Fixed-price MVP development. A senior team scopes it in writing, ships a deployed build early, demos weekly and launches a focused MVP in typically 8–12 weeks.
-
Web app development
Fast, SEO-ready web applications in Next.js and React: customer-facing apps, sales platforms and portals, with performance and search built into the architecture.
Build the SaaS you will not have to rewrite.
Tell us about your customers and pricing. You get a written v1 scope and one fixed price.