SaaS Product Development
SaaS built for activation and retention, not just launch.
MVP to scale-up: multi-tenant foundations, billing in rupees and dollars, onboarding and analytics, with AI features where they earn their place.
- Multi-tenant
- Billing and GST
- AI features
Free 30-minute call with a senior specialist. Reply within one business day. Based in Jaipur, working with businesses across India.
- Discovery callFree 30 minutes with a senior specialist
- Scoped first phaseWritten scope, timeline and fixed price
- Build with weekly demosWorking software you can see every week
- Launch and supportGo-live with your team ready, then ongoing support
What is SaaS product development?
SaaS product development is building software that customers subscribe to, covering the MVP, multi-tenant architecture, subscription billing, onboarding and analytics. Stack18's product team takes an idea from MVP to scale-up, with as much focus on activation and retention as on code.
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SaaS Product Development, end to end.
Each capability is delivered by the same team on the Agentic SDLC, with your approval at every critical step.
MVP development
Smallest product that proves the business.
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Multi-tenant architecture
Built for many customers.
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Billing
Plans and invoices.
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Product-led growth
Activate users.
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Analytics
Know what drives revenue.
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AI features
Smarter product.
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A typical engagement, step by step.
Senior people lead every phase. Specialised AI agents on the Agentic SDLC handle the repetitive work, and nothing ships without your approval.
Discover
Map the current process, data and priorities.
Design
Agree modules, integrations and rules.
Build
Configure and extend in weekly demos.
Launch
Data migration, training and go-live support.
Start small. Scale when it works.
Every engagement begins with a short, fixed-price step so you can judge the fit before committing further. See pricing.
Discovery Sprint
Teams deciding what to build first.
- Duration
- 1–4 weeks
- Pricing
- Fixed price
- Scoped plan and timeline
- Team and fixed price
- Process map or prototype
MVP build
Teams that want to go live fast.
- Duration
- 8–14 weeks
- Pricing
- Fixed price
- Prototype
- Core workflow
- Launch-ready release
SaaS scale-up pod
Needs that a ready-made system does not cover.
- Duration
- 4–16 weeks
- Pricing
- Fixed price per phase
- Weekly working demos
- Senior team accountable
- 30 days hypercare
What we have shipped, and what a typical engagement looks like.
Delivered projects link to the full case study. Illustrative scenarios describe typical engagements and are not named client results.
VC-backed wellness startup
- Challenge
- A venture-backed clock: Android and iOS had to launch together, with an admin console for the team.
- What we do
- Scoped the MVP, reviewed clickable prototypes, then built both platforms in two-week sprints.
3 months
Read the case study →B2B SaaS startup
- Challenge
- Prototype will not scale.
- What we do
- Multi-tenant rebuild with billing.
3–4 months
Ethnic wear D2C, Jaipur
- Challenge
- A ₹100+ crore brand needed website, app and back office to share one catalogue and one record of stock and orders.
- What we do
- Nine specialists built website, mobile app and ERP on one connected foundation in two-week sprints.
3 months
Read the case study →Free SaaS scoping call
Share your idea or product. We outline MVP scope and architecture.
- MVP scope
- Architecture view
- Timeline
We agree targets before we start.
Every engagement has a baseline and a target on the measures that matter to you, reported at every read-out.
SaaS Product Development questions.
How do we start?
A fixed-price discovery sprint.
Billing?
Stripe, Razorpay or Chargebee, GST-compliant.
Multi-tenant?
Yes.
AI?
Where it earns its place, with evaluation.
Cloud?
CI/CD and cost control included.
Co-build?
Founders can apply to Stack Ventures.
Let's scope your SaaS Product Development project.
Tell us where you are and where you want to be. A senior specialist will reply within one business day with next steps.
- Free 30-minute consultation
- Indicative estimate after the call
- NDA available on request