No.01 · Case Study · On-Demand Home Services

From WhatsApp chaos
to a platform that
runs itself.

WAIOZ built Medleiz — a managed marketplace for home renovation and repair. Two apps, multi-party escrow, and 6-month system-enforced warranty holdback. All of it replacing the founder's memory.

3 min read
14
Weeks to live
End-to-end delivery
3
Apps built
Customer · Contractor · Admin
$0
Manual transfers
Fully automated payments
Client
Medleiz
Location
Chennai, India
Sector
Home Repair & Renovation
Delivery
12–14 weeks
Status
Live in production
Apps Shipped
2 +1
Customer app + contractor app (Flutter), plus a MERN admin console
Inspection Fee
$15
Paid in-app at booking. Real commitment from the customer, day one
Warranty Holdback
6 mo
System-enforced on every job. Releases automatically — nobody needs to remember
Service Categories
6+
Tile grouting, seepage, bathroom, electrical, construction, general repairs

The Problem

Does this sound familiar?

The Medleiz model was sound — guaranteed home services with phase-wise payments and warranty protection. But the execution ran entirely on the founder's memory.

01
Jobs tracked in a notebook
No audit trail, no status visibility, no handoff to anyone.
02
Contractor dispatch by phone
Routes picked manually. BOM photographed and sent as WhatsApp screenshots.
03
Payments on memory
Commission in Excel per job. Paid by manual bank transfer whenever someone remembered.
04
Warranty holdback tracked nowhere
The 6-month guarantee existed in theory. In practice it lived in the founder's head.
05
Quote revisions = three-way call
Customer, contractor, coordinator on the phone together for every revision. No record kept.
"The founder was the system. The business could not scale past one person's bandwidth."
The Transformation

The same model. A platform underneath it.

Nothing about the business logic changed. The inspection fee, the commission structure, the phases, the warranty — all identical. We just put the system on software instead of a person.

Before · WhatsApp & Spreadsheets
After · Medleiz Platform
Jobs tracked in a notebook — no visibility for anyone
Jobs in-app — status visible to the whole team
Contractor dispatched by phone, BOM on WhatsApp
Zone-based push — contractor accepts in-app, BOM digital
Quotes revised over three-way phone calls, no record
Quotes mediated in admin — every revision logged and audited
Payments by manual bank transfer on memory
Automatic split at checkout — commission applied instantly
Warranty holdback existed in the founder's head only
Holdback locked in-platform — auto-releases at 6 months
Re-engagement happened whenever someone remembered to call
Push campaigns fire on service-cycle triggers — every week

How Money Flows

The financial engine — visualised.

This is what makes Medleiz a marketplace, not a booking app. Every dollar moves through four tracked states in real time — no cash, no memory required.

EXAMPLE JOB $500 total · 2 phases · 20% holdback
HOLDBACK PORTION HOLDBACK $100 locked 6 months auto at 6mo AUTO RELEASED ✓ $100 warranty closed CUSTOMER $500 pays Medleiz 100% MEDLEIZ Holds & controls all funds + commission cut auto-applied Phase 1 CONTRACTOR $180 phase release Phase 2 CONTRACTOR $220 phase release TOTAL $500 cleared

Every payment split is automatic. Holdback freezes if a warranty claim is raised. Admin can override any phase release. No manual transfers, no spreadsheets.

Quote State
draft submitted accepted ·revised ·rejected
Payment State
pending initial paid phase released holdback active fully cleared
Phase State
not started in progress complete
Warranty State
active in claim cleared

What We Built

Three connected products. One system underneath.

Every piece talks to the others. BOM entered in the field shows live in admin. A payment released in admin reflects immediately in both apps.

9:41 medleiz SERVICES Bathroom from $80 Electrical from $60 Seepage from $120 Tile Work from $95 Job #4892 · In progress Phase 2 of 3 · contractor on site
01 · Customer App

The booking surface for the homeowner.

Flutter · iOS & Android
  • Category-led intake, photos, slot pick, $15 in-app payment
  • Live job status phase by phase
  • Quote view — accept, reject, or request revision
  • Warranty status visible on every completed job
  • Wallet and coupon application (Phase II)
9:41 My Jobs 3 active NEW · ZONE 4 Seepage fix · 2.1 km Today 4:00 PM · payout $180 Accept Decline BILL OF MATERIALS Waterproofing membrane $45 Tile grout (3 kg) $18 Labour · 4 hrs $120 Submit BOM to admin
02 · Contractor App

The work surface for the technician.

Flutter · iOS & Android
  • Zone-based push when job opens, accept/decline in-app
  • Inspection flow with photo capture and notes
  • BOM builder — line items, units, rates, totals
  • Quote goes to admin, never directly to the customer
  • Payout view with held and released amounts visible
admin.medleiz.io Jobs Quotes Payments Holdback Contractors Campaigns Live operations 42 active jobs · $18.4k in escrow OPEN 17 jobs HELD $3.2k warranty CLEARED $24k this month RECENT JOBS #4892 Bathroom · Marina $500 #4893 Electrical rewire PENDING #4894 Tile work · Downtown QUOTE SENT #4895 Seepage · T.Nagar ASSIGNED WARRANTY HOLDBACK QUEUE #4856 · $100 held · releases in 4 mo #4841 · $80 held · releases in 1 mo Release $80 →
03 · Admin Console

Not a dashboard. A live operations console.

MERN · MongoDB · Express · React
  • Quote mediation — step in, suggest revision, notify both sides
  • Commission rules per category, payment ledger across all parties
  • Phase release controls with overrides for edge cases
  • Warranty hold tracking with auto-release on close
  • Contractor performance, SLA breaches, payout queues

Phase II · Retention Layer

Turn a one-time job into a repeat relationship.

Once the core lifecycle was stable, Phase II added a retention engine. Home services bought once and forgotten. These three modules change that.

Customer Wallet

Refunds, referral credits, and partial settlements flow into a wallet. Reduces friction on the next booking — trackable per customer in admin.

Coupon Engine

Rules-based discounts — time-windowed, category-specific, segment-targeted. Configurable from admin with no engineering push required.

Segmented Push

Campaigns triggered by service history — AC service at 90 days, re-engagement on lapsed customers. Fires automatically every week.

The Outcome

A platform business, not a founder-led WhatsApp operation.

The biggest outcome: Medleiz can now hire a coordinator who is not the founder.

100%
Trackable end to end
Anyone in the team can pick up a job and know its full state. Memory is no longer the system of record.
0
Manual reconciliations
Payments are auditable through the platform ledger. The bank statement is no longer the source of truth.
Auto
Warranty holdback release
Held amounts release on schedule. Claims freeze the hold without manual escalation.
+1
Repeat-customer revenue layer
A system output now, not a hope. Segmented push fires on service-cycle triggers, every week.
Ops Ready
Hire without rewriting the model
The founder is no longer the system. A new coordinator can pick up any job on day one — no handover call needed.
↓ Cycle
Quote-to-accept time cut
Revisions stopped going through phone calls. Mediation happens inside the admin console.
"We were managing 40+ jobs a week out of a WhatsApp group and a notebook. Now every job has a status, every payment has a record, and I'm not the one holding it all together."
Founder, Medleiz  ·  Chennai, India
Tech Stack

Standard MERN. The complexity is in the workflow, not the stack.

Mobile Apps
Flutter · iOS and Android · single codebase
Web Admin
React (Next.js compatible)
Backend
Node.js · Express
Database
MongoDB
Real-time
Socket-based notifications for contractor dispatch
Payments
Multi-party split · escrow + holdback logic
Push
FCM · segment-driven delivery
Storage
S3-compatible · photo evidence per phase
Who Else Fits

If your coordinator is a WhatsApp group, this was built for you.

If your payments are a spreadsheet, your warranty lives in someone's head, and you can't hand the business to anyone without a three-hour briefing — the Medleiz pattern applies directly to your operation.

Home maintenance aggregators (single-job and AMC)
Renovation and fit-out marketplaces
Multi-trade dispatch platforms
Facility management with sub-contractor pools
Specialty services — pest control, deep cleaning, AMC
Trade and skilled-labour marketplaces
Still running on WhatsApp?

Let's talk about what
14 weeks looks like for you.

We scope it, we build it, you own it. Multi-party payments, phase escrow, warranty controls, and a retention layer — all shipped in one engagement. No retainer, no lock-in, full source-code ownership from day one.

Medleiz. A managed home renovation marketplace, built end to end. | WAIOZ