Micro Solo · 2-3 foundersVertical £10-100k MRRUK Niche-first, high-margin−4 sheets Replaced by one dashboard
The micro-saas stack
Six instruments, calibrated.
UK micro-SaaS — vertical-specific, low-volume, high-margin — onboarding, billing, retention without enterprise overhead.
01 · Niche onboarding
Vertical-specific sign-up, not generic SaaS-flow.
Sign-up tuned to the niche — accountancy practice, dental clinic, surveyor — pre-filled defaults, vertical-specific identity, the right activation milestone for the customer's actual job. Generic onboarding doesn't convert vertical buyers.
Vertical-aware sign-up flow
Stripe Checkout + Auth0
Niche-specific defaults
First-value event per vertical
02 · Per-customer cohort tracking
Low volume, high signal.
When you have 80 customers not 8,000, every account matters. Per-customer activity tracking, expansion signals, churn risk — surfaced in a queue you read on a Sunday afternoon, not a dashboard you ignore.
PostHog per-customer view
Activity & adoption tracking
Expansion-signal flagging
Per-account churn risk
03 · Billing automation
Stripe Billing for the long-tail customer.
Annual contracts, custom pricing, mid-term plan changes, Xero reconciliation. The billing system that handles the awkward edge cases without a Sunday on the laptop.
Stripe Billing + custom prices
Annual contract handling
Xero reconciliation via Synder
Dunning & retry automation
04 · Vertical-specific integrations
The integrations the niche actually uses.
The CRM, accounting tool, or industry platform every customer in the niche already runs. Built once, owned by you, replacing the Zapier mess that breaks every quarter. Stickier than features.
Native API integrations
Webhook-based sync
OAuth-secured connectors
Integration health monitoring
05 · Customer success
High-touch without a CSM team.
Plain inbox + product context + low-volume cadence — the founder's customer-success motion at scale. Quarterly business reviews on autopilot, save-plays per account, expansion conversations triggered by usage.
Plain inbox + product context
Save-play queue routing
Quarterly review automation
Expansion-trigger workflows
06 · BrainBase
Vertical knowledge + customer playbooks.
Niche regulation, customer FAQs, integration runbooks, sales scripts — searchable from the IDE, the support inbox, the sales call. The vertical brain that beats the generic competitor.
Vertical regulation notes
Customer-FAQ archive
Integration runbooks
AI-assisted retrieval
Sample engagement
The vertical micro-SaaS that doubled annual contracts.
Two founders. 80 paying accountancy firms. Stripe + Xero + a Notion CRM the founder updated weekly.
A UK micro-SaaS for accountancy practices ran on Stripe for billing and Notion for everything else. Three-week build: Stripe Billing for annual contracts, per-customer activity tracking via PostHog, vertical-aware Plain inbox, save-play queue. Six months in: annual contract take-up doubled, churn dropped two points, founder reclaimed Sundays.
How we measure: Annual contract conversion measured at renewal across 80 accounts pre-build vs 92 accounts post-build; churn = quarterly logo churn rate, rolling four quarters.
2×annual contract take-up
−2ptslogo churn
8 hrsfounder admin saved / week
Builds for saas
Use cases that fit.
Each is a tightly-scoped build, fixed price, owned by you.