inparlor.
DevelopmentFor B2C SaaS

Custom Software Development for B2C SaaS.

Custom software that replaces the spreadsheets and duct tape, shipped in quarters, not years. Designed and shipped for B2C SaaS companies, not generic templates with b2c saas swapped in.

Why this matters

Why B2C SaaS companies need Custom Software built around their unit economics.

Most B2C SaaS companies are operating on sites or software stacks built three to five years ago for a different version of the buyer. Acquisition is mobile-first but the team can't ship native iOS and Android fast enough to keep up with the web product. The infrastructure decisions that compound are the ones made with the operator in the room, not the ones made in a vacuum.

Inparlor's Custom Software Development engagement for B2C SaaS companies reflects that. We build custom software for the work no off-the-shelf tool fits: operations platforms, customer portals, internal tools, and multi-tenant systems that talk to your Stripe, Salesforce, or HubSpot data. The deliverables below are scoped against the unit economics, annual ltv of $60-$300, trial-to-paid conversion of 30-60%.

Where most agencies treat B2C SaaS companies as another vertical to learn on, we treat the vertical as the starting point. Technical debt and a thin team make every release slower, so velocity drops as the product grows. We will tell you on the first call which of those constraints is binding and which is solvable inside the engagement.

What we deliver

Scope built for B2C SaaS companies.

  • Two-week paid discovery with a fixed-bid proposal at the end
  • Architecture diagram and data model
  • Authentication via Clerk, WorkOS, or Auth.js
  • Postgres database with migrations
  • Admin dashboard and role-based access control
  • REST or tRPC API with typed contracts
  • Stripe billing integration when relevant
  • Background jobs via Inngest or Trigger.dev
B2C SaaS benchmarks

Real numbers from the vertical.

30-60%

Trial-to-paid conversion

5-10%

Monthly churn

3-10 weeks

Time-to-ship a mobile feature

$60-$300

Annual LTV

48 hours

Custom Software proposal turnaround

Our B2C SaaS-specific approach

How Custom Software runs in B2C SaaS companies, operationally.

  • Paid discovery before any fixed bid

    Two weeks, scoped and paid. We map the workflow, talk to operators, and write a wireframe pack you can use even if you do not hire us. The bid that follows is a number, not a range.

  • Auth, billing, and roles solved on day one

    Clerk or WorkOS for auth. Stripe for billing. Role-based access control from the first sprint. These are solved problems and we do not re-solve them every engagement.

  • Postgres until you have a reason to leave

    Boring works. Postgres covers 95% of operator workloads. The migration to something exotic is real but cheap if you ever need it, and most teams never do.

  • Observability is not a phase-two project

    Sentry, Axiom, and a feature-flag layer ship with the first sprint. You cannot debug what you cannot see, and we will not hand off code we cannot diagnose.

FAQ

B2C SaaS buyers ask us this most.

Ready to start?

Get a proposal for B2C SaaS custom software.

We respond within 48 hours with scope, pricing, and the team that would actually run the engagement.

Get a proposal

Or explore the full Custom Software Development page · B2C SaaS hub