/ Defolt Labs · Software Engineering Laboratory

Sovereign systems. Engineered to endure.

An independent software engineering laboratory based in Dar es Salaam, Tanzania. We design, build, and operate resilient enterprise platforms, specialized industry software, and open developer utilities.

African software engineer in a batik shirt holding a digital tablet
● Sovereign Cloud Active · Dar es Salaam
Engineered for African Operations
DRS Retail POS · DHS Clinical EMR · 100% In-House
Independent software laboratory engineered and registered in Tanzania.
● PDPC Registered Data Processor
● BRELA Reg. 191146913
● 100% In-House Engineering
/ Studio Portfolio

Proprietary software systems built by Defolt Labs

Production-grade platforms engineered to solve complex operational friction, maintain continuous availability, and eliminate vendor lock-in.

DRS Retail System

Multi-counter point of sale and FIFO batch inventory management software for retail chains, pharmacies, and supermarkets. Till operations never block a sale even during internet or power drops.

✓ Zero till blocking with offline ledger queue
✓ FIFO batch depletion & multi-branch stock sync
✓ Cashier PINs, supervisor overrides & audit logs
✓ Real-time revenue reports & SMS digital receipts

DHS Clinical System

Specialized clinic practice management and electronic health records (EHR) engineered for dental practices, optical clinics, and outpatient medical centers. Shapes clinical screens around your practice.

✓ 2D digital tooth odontogram & clinical charting
✓ Patient-cosigned catalog billing (anti-fraud)
✓ Appointments queue & multi-doctor triage
✓ Integrated dispensary stock & confidential EHR
/ Client Engagements

Bespoke software systems engineered for your operations

When commercial off-the-shelf software falls short, we engineer custom platforms built around how your team actually works.

Explore Services & Rates

One engineering team from initial architecture to live operations.

We design the user interface, build the database and backend services, and stay on to operate, monitor, and support the system. No handoffs to outsourced contractors or call centers.

View Rate Cards & Formula
3 Milestones
Kickoff · Staging · Production
Unit-Cost
Transparent Formula · No Hourly Drift
Architecture Topology Production Verified
Core Operations & Logistics Module
Automated approvals · Dispatch queue · Real-time ledger
ACTIVE
Statutory TRA EFD Integration
Fiscal electronic receipt sync · VFD signature validation
SYNCED
Sovereign Cloud & Tenant Namespace
Strict row-level security · Encrypted at rest · Zero leak
ISOLATED
Deployable on dedicated sovereign cloud or on-premise servers

Statutory & Payment Rail Native

Built natively for East African compliance. We integrate directly with TRA EFD fiscal servers, regional mobile money aggregators, and banking settlement rails without brittle third-party layers.

TRA EFD Fiscal Gateway Native API · Real-time Signing
Mobile Money & Card Reconcile Automated Drawer Balance

Data Sovereignty & PDPC Compliance

Defolt Labs Limited is a registered Data Processor under the Tanzanian Personal Data Protection Act (Reg. 0-000-007-324). Your business data stays strictly sovereign and encrypted with role-scoped access control.

PDPC Data Processor Cert Reg: 0-000-007-324
Database Isolation Strict Row-Level Security
/ Transparent Pricing · Sovereign Software

Simple, predictable rates for growing operations

All plans billed transparently in Tanzanian Shillings (TZS) with free trials and zero till blocking.

Retail & POS

DRS Retail System

TZS 15,000 / month

7 days free trial · TZS 2,000 one time setup

● 1 to 10+ store branches
● 1 to unlimited till accounts
● Batch FIFO inventory & low stock alerts
Key Features
  • ✓ Zero till blocking with local offline queue
  • ✓ Multi branch inventory sync & transfers
  • ✓ Cashier PINs & supervisor price overrides
  • ✓ Digital receipt dispatch via instant SMS
  • ✓ TRA EFD fiscal receipt ready
Bespoke Labs

Custom Engineering

Fixed Rates / milestone

Milestone delivery · Sovereign hosting

● TZS 5M per core functional module
● TZS 2M per integration boundary
● SLA maintenance & direct engineer access
Key Features
  • ✓ Bespoke systems modeled to your workflow
  • ✓ Sovereign dedicated cloud infrastructure
  • ✓ PDPC statutory data processor compliance
  • ✓ Strict unit testing & predictable milestones
  • ✓ Ongoing maintenance and updates
/ Engineering Standard

Principles that define Defolt Labs

We engineer software for African operational realities. Pragmatic, high-availability systems built by engineers who stay with you.

One team from first sketch to live operations

The engineers who design your interface and architecture write the backend code and stay on to monitor, maintain, and support the system. No handoffs to outsourced contractors.

● 100% In-House Direct Engineer Support

Engineered for real-world network drops

African power and network fluctuations are everyday realities. Our systems run local offline buffers with zero statement timeouts so checkouts and clinical queues never freeze.

● Local Offline Buffer Zero Checkout Timeout

Strict tenant isolation and statutory compliance

Registered as a Data Processor under the Tanzanian Personal Data Protection Commission (PDPC Reg. 0-000-007-324). Cryptographic row-level security and dedicated namespaces.

● Row Level Security PDPC Reg: 0-000-007-324

Predictable delivery with zero billing surprises

We price builds on a transparent unit-cost formula rather than runaway hourly rates. Payments are tied to delivery milestones: kickoff, staging sign-off, and production go-live.

● 3 Milestones Audited Scope Formula
/ Interactive Laboratory

Open developer tools and retro arcade

Utilities we built for our own daily engineering workflows and keep open to everyone. Everything runs locally in your browser with zero tracking and no data persistence.

● 15+ Browser-Based Utilities

Developer Utilities Suite

Format, validate, encode, and convert payloads instantly on your device. Zero telemetry, zero uploads, zero server tracking.

Interactive Lab Arcade · 2 Games

Defolt Retro Arcade

Two classic arcade titles running in your browser with synthesized 8-bit Web Audio and full mobile touch controls. Zero tracking; scores stay 100% on your device.

Excited East African gamer in a kitenge bomber jacket playing a handheld console
/ Get in Touch · Dar es Salaam, Tanzania

Let's engineer your next system

Have a project in mind, need a demo for DRS or DHS, or want to discuss enterprise rates? Send us a message and we'll reply within 24 hours.

Send a Message

Fill out the form below. We read and respond to every inquiry.

We typically reply within 24 business hours.

Defolt Labs Head Office

Dar es Salaam, Tanzania · Registered Software Laboratory

Office Address
Dar es Salaam, Tanzania · P.O. Box 23463
Direct Phone
Email Support
Statutory Compliance
PDPC Reg. 0-000-007-324 · BRELA 191146913

Have a system to build, modernize, or scale?

Send the shape of what you need—whether that's deploying DRS in your stores, running DHS in your clinic, engineering a bespoke enterprise platform, or sovereign cloud hosting. We reply within 24 hours with a scoped next step.