See professionals, specialties, rooms and appointment statuses in one place.
BLUE WINDOW STUDIO · BUSINESS TECHNOLOGY COMPANY
Technology that keeps
your business running.
Business software, automation and artificial intelligence designed around your operation.
Z
See how it works →ZENTRAOur business management system
- Invoicing
- Inventory
- Sales
- Cash flow
- Repairs
- Analytics
✔ Training and support included · Plans from $29/month
GUIDED IMPLEMENTATION
LESS RISK WHEN TAKING THE FIRST STEP
Software, training and support from one team.EXCLUSIVE CUSTOMER BENEFIT
Shop at DoctorCell. Invoice for free.
Your purchase gives you access to Zentra Free: the simple plan for small businesses that only need to issue invoices.
$0 ZENTRA FREEActivate my benefit →For small businesses that only need invoicing.
01 · ZENTRA — BUSINESS OPERATING SYSTEM
Your business.
One system.
Sales, inventory, SRI invoicing, cash flow and repairs stop working in silos. Every transaction updates the same operation.
ZZENTRABusiness Operating System
AccountingReceivables and liquidity
InventoryMulti-location
SRI invoicingOnline authorization
CustomersHistory and credit
SalesPOS and quotes
RepairsWorkshop and warranties
BEFORE
Disconnected processes.
- ✕ Excel and scattered spreadsheets
- ✕ WhatsApp used as your memory
- ✕ A separate invoicing system
- ✕ Inventory disconnected from sales
- ✕ Printed orders with no traceability
- ✕ Reports assembled by hand
AFTER ZENTRA
One platform. One operation.
- ✓ One unified platform
- ✓ Integrated SRI invoicing
- ✓ Inventory connected to sales
- ✓ Complete repair traceability
- ✓ Centralized customers and locations
- ✓ Real-time reporting
NEW · HEALTHCAREA ZENTRA SOLUTION · BUILT FOR CLINICS
Deliver better patient care.
YOUR CLINIC, FULLY CONNECTED
Deliver better patient care.
Run a better clinic.
ZentraCare brings scheduling, patients, care, payments and management into one platform designed to reduce administrative chaos and help you grow with control.
✓ Guided implementation✓ Training for your team✓ Responsive support
IDEAL FORClinicsPrivate practicesMedical centers
TODAY · 8 APPOINTMENTS
AUG 26, 2026A schedule that keeps your team organized.
María P.General consultationSeen
Carlos V.Follow-upIn consultation
Ana L.First visit10:30
Patients today08+2 confirmed
Average time24mhealthy flow
Satisfaction4.9last 30 days
Smart scheduling
Coordinate professionals, rooms and availability without conflicts or endless calls.
Clinical records
Centralize patient information and preserve continuity across every visit.
Payments and invoicing
Connect services, payments and receipts in the same operational flow.
Management insights
Turn daily activity into useful information to lead and grow.
READY TO BRING ORDER TO YOUR CLINIC?Discover how ZentraCare adapts to the way you work.
Schedule a demo ↗ZENTRACARE · EARLY CUSTOMERS
Be part of the first real implementations.
ZentraCare is new. Instead of showing testimonials that do not exist yet, we invite selected clinics to validate it with guided setup, training and direct support.
02 · ZENTRA IN ACTION
The interface already at work.
These are real Zentra screens used in daily operations. Choose an area and see how your business runs from one platform.
01 / 05Sales and invoicing
Manage documents, customers, statuses and salespeople from one view.
● Real Zentra screen03 · RESULTS
Less busywork. More control.
Less manual work
Automate the repetitive processes that consume your day.
More control
See what is happening at every location from one screen.
Fewer errors
One source of truth means no one enters the same data twice.
Better decisions
Real-time business information for data-driven decisions.
47%fewer repetitive manual tasks
1source of truth for your entire company
24/7real-time operational visibility
04 · ZENTRA MODULES
Everything your operation needs, in one system.
Every module shares the same database. What happens in sales is instantly reflected in inventory, cash flow and reports.
Sales
Quotes, orders, POS and salespeople, all connected.
See how it works →SRI invoicing
Authorized electronic documents built into the sales flow.
See how it works →Inventory
Stock, prices and movements by location.
See how it works →Cash flow
Income, expenses, receivables and business liquidity.
See how it works →Repairs
Orders, technicians, parts, statuses and warranties.
See how it works →Analytics
Operational and financial reports that explain every result.
See how it works →05 · AUTHORIZED CUSTOMER STORY
Built in real businesses. DoctorCell
Four connected areas, one operation.
01Reception02Repairs03Inventory04Sales management
From device intake to customer delivery, the entire operation stays connected: reception, diagnostics, parts, invoicing and warranties move together in the same system.
View the DoctorCell story →
● Verified storyBEFOREDisconnected processes
→ZENTRAOne platform
→AFTERCentralized operations
06 · CLEAR PRICING
Choose with the numbers in front of you.
Three common starting points. Monthly billing, no minimum term and the option to change plans as you grow.
Getting started
Essential
$29USD
/ month
/ month
- ✓ 2 users · 1 location
- ✓ SRI electronic invoicing
- ✓ Sales, cash flow and reports
Growing businessesMOST CHOSEN
Professional
$59USD
/ month
/ month
- ✓ 5 users · up to 2 locations
- ✓ Inventory, purchases and suppliers
- ✓ Accounts receivable and payable
Technical service
Repair shop
$29USD
/ month
/ month
- ✓ Work orders, devices and IMEI
- ✓ Technicians, parts and warranties
- ✓ SRI electronic invoicing
↺Cancel whenever you wantNo minimum-term contract.
⇄Change plans as you growAdd users, locations or modules.
Compare every feature ↗06 · TWO PATHS. ONE TEAM.
Your business should not have to adapt to software.
Software should adapt to your business.
01Z
ZENTRA
The operating system for your business.
For companies that want to manage invoicing, inventory, sales, cash flow, accounting, locations, repairs and customers from one platform.
- Invoicing
- Inventory
- Sales
- Cash flow
- Accounting
- Locations
- Repairs
- Customers
02B
BLUE WINDOW LABS
We build what does not exist yet.
Custom software, applications, artificial intelligence, automation, integrations and cloud architecture built around real processes.
- Business software
- Applications
- AI
- Automation
- Integrations
- Cloud architecture
07 · ZENTRA INTELLIGENCE
Software that thinks alongside your business.
We do not sell abstract AI. We apply it to the processes you already use: sales, inventory, customer service, management and analysis.
BUSINESS DATA↓ZENTRA↓AI ENGINE
↖SALES
↓STOCK
↘DECISIONS
AI for sales
Spot patterns and opportunities in your customer portfolio.
AI for inventory
Predict shortages before they cost you a sale.
AI for service
Automate customer responses and follow-up.
AI for management
Summarize the business information that matters.
AI for analysis
Turn data into actionable recommendations.
08 · METHODOLOGY
From a real problem to a working operation.
01Discover
We map your real processes, users and bottlenecks.
02Design
We design the solution around the way your team works.
03Build
We build, integrate and test against real operations.
04Scale
We train your team, measure results and scale with you.
09 · INTEGRATIONS
Zentra connects with the tools you already use.
10 · TRUST WITHOUT THE HYPE
We prefer clear evidence over inflated promises.
We do not show customers, figures or testimonials without permission. Every public result must have a baseline, a metric and a way to verify it.
We publish fewer stories, but each one must be real, authorized and useful so you can evaluate the solution with confidence.
0invented or context-free results
4operational dimensions we can measure
1public story, presented once and in detail
Four dimensions of results
- ⏱Repair time and speed of delivery to the customer
- ▤Inventory turnover and accuracy by location
- SRISRI-authorized invoices within the sales flow
- ✕Errors caused by entering the same information twice
Meet our new product for clinics.
Explore scheduling, patients, care and payments in a free guided demo.
Schedule a demo ↗RESOURCES FOR YOUR BUSINESS
Useful answers, before the sales call.
Practical content for business owners who want to compare options and improve their operation.
01
INVENTORYHow to control parts and accessories without discrepancies
A practical guide for repair shops with one or more locations.
Read guide →02
WORK ORDERSFrom device intake to customer delivery
Organize technicians, diagnostics, warranties and follow-up.
Read guide →07
MANAGEMENT7 signs that spreadsheets are no longer enough
See when manual control starts slowing your business down.
Read guide →01PRODUCT
02IMPLEMENTATION
03SUPPORT
A TEAM IN ECUADOR
The same people who build it help you use it.
You are not passed from one vendor to another. Product, implementation and support work together so your team can get value from day one.
Human responseSupport from Ecuador1:1 guidance
QUESTIONS BEFORE STARTING
Clear answers without opening WhatsApp.
The important details you should know before trusting us with your operation.
01How long does it take to move my data?+
It depends on the amount and quality of your current information. We review it first and agree on a migration plan before making changes.
02What happens to my data if I cancel?+
We coordinate the export of your information and account closure. Plans have no minimum term.
03Do I need internet all the time?+
Zentra and ZentraCare run in the cloud, so an internet connection is required to use them and keep information synchronized.
04Will my team learn it quickly?+
Training and guided setup are included. We configure the initial workflow around the way your team actually works.
05Are my records backed up?+
The platforms operate in the cloud and include backups for operational continuity. Access and handling are reviewed during implementation.
11 · LET'S TALK
Let's transform your operation.
Schedule a Zentra or ZentraCare demo. We will reply on WhatsApp with an initial recommendation.
ZENTRA · PLANS FROM $29/MONTHStart with the control your operation needs.View plans and pricing →