AppSheet developer · 100+ apps built

Turn your spreadsheets into apps your team actually uses.

I'm Joe Tayactac. I've built 100+ custom AppSheet apps for inventory, POS, inspections, field technicians, approvals and reporting, each designed around how the business already works.

Apps built
100+
Years
5+
App types
40+
  • Clients in the USA, Europe & Asia
  • Fluent business English
  • Apps for phone, tablet & desktop

Most requested

Apps for the work your team does every day

I build no-code business apps on Google AppSheet, and fix and troubleshoot existing ones. Every business runs a little differently, so I build the app around your workflow, not the other way around.

Inventory management

Stock in, stock out, locations and low-stock alerts, with barcode scanning from any phone.

Sales tracking

Record sales in the field, follow up on leads and see totals by person, product or day.

Technician tracking

Assign jobs, capture photos and signatures on site, and know where every job stands.

Approvals & workflows

Requests that route to the right person, with notifications and a clear audit trail.

Reports & dashboards

Automatic PDFs and live dashboards instead of rebuilding the same report every week.

Customer management

One place for customer details, history and follow-ups that the whole team can see.

Apps I build

If it lives on paper or in a spreadsheet, it can be an app

A sample of what I build with AppSheet, grouped by the team that uses it. Every app is built around your own process and data.

Operations & inventory

7 app types
  • Inventory management
  • Point of sale (POS)
  • Warehouse & stock transfers
  • Purchase orders
  • Supplier management
  • Asset tracking with QR codes
  • Equipment check-in / check-out

Inspections & field work

8 app types
  • Site inspections
  • Vehicle inspections
  • Safety & HSE audits
  • Quality control checklists
  • Maintenance requests
  • Preventive maintenance
  • Technician job tracking
  • Delivery & proof of delivery

Sales & customers

7 app types
  • Sales tracking
  • CRM & lead management
  • Quotations
  • Order taking
  • Customer feedback & surveys
  • Membership & loyalty
  • Support tickets

People & HR

7 app types
  • Attendance with GPS check-in
  • Leave requests
  • Shift scheduling
  • Employee directory
  • Training & certifications
  • Onboarding checklists
  • Performance reviews

Finance & admin

6 app types
  • Invoicing
  • Expense claims
  • Petty cash
  • Budget tracking
  • Document & permit expiry reminders
  • Contract management

Projects, bookings & reports

7 app types
  • Project & task tracking
  • Daily site reports
  • Room & equipment booking
  • Visitor log
  • Event registration
  • KPI dashboards
  • Automatic PDF reports

Built into the apps

  • Barcode & QR scanning
  • Photos & signatures
  • Works offline
  • Automatic emails & PDFs
  • Notifications
  • Approvals with audit trail
  • Role-based access
  • Dashboards & charts
  • Google Sheets & Excel

Don't see your app here?

These are only examples. Tell me how your team works today and I'll tell you what the app could look like.

Describe your process

Proof of work

Don't take my word for it

Besides client work, I design, build and run my own products and free AppSheet tools, and I share my work on YouTube. Try them yourself.

Free AppSheet tool

AppSheet HTML Table Generator

Add your columns and copy one CONCATENATE() formula that builds a styled HTML table, with header and row options and a live preview.

  • Any columns
  • UPPER / LOWER
  • Border & width
  • Live preview
Open the generator
Free AppSheet tool

AppSheet Progress Bar Generator

Pick a style, enter your column name and copy one formula into an Image virtual column. Bars, circles, gauges and blocks, with color steps and a fill animation.

  • 6 shapes
  • Color steps
  • Fill animation
  • Copy-paste formula
Open the generator
Free AppSheet tool

AppSheet QR & Barcode Generator

Type a column name and copy one formula that shows a QR code or Code 128 barcode for every record. Choose the colors and size, with a live preview.

  • QR codes
  • Code 128 barcodes
  • Custom colors
  • Live preview
Open the generator
Live product

GoOnlinePOS.com

A free point-of-sale system that runs in the browser: no signup, no login, no installation. Sell, manage inventory, track customers and print receipts, even offline.

  • Point of sale
  • Invoices & receipts
  • Barcode & QR codes
  • VAT & pricing calculators
Visit GoOnlinePOS.com
Free tool

Online PDF Editor

Edit the existing text in any PDF, add text, images and signatures, and white out scanned pages. It runs entirely in the browser: files never leave the device, and it works offline.

  • Edit PDF text
  • Add text & images
  • Signatures
  • No upload
Open the PDF Editor
Video

YouTube channel

See my work in action on video: building, fixing and improving real AppSheet apps. Subscribe to follow new uploads.

  • @JoeTayactac
  • AppSheet tutorials
Watch on YouTube

How I work

Building an app isn't just screens and buttons

It starts with understanding the work, and it doesn't stop at launch.

  1. 1

    Understand the workflow

    We walk through how the work actually happens today: who enters what, where it gets stuck, and what you need to see.

  2. 2

    Build and test with your team

    I build the app on your existing data, your team tries it on real work, and I fix what doesn't fit.

  3. 3

    Keep improving

    Once real people use it, new needs show up. I keep refining the app as your business changes.

Joe Tayactac, AppSheet developer

About me

From Excel to AppSheet expert

I didn't start as a traditional programmer. During COVID, the company I worked for ran its daily operations on Excel, and as the processes got more complicated I kept thinking there had to be a better way.

That question led me to AppSheet. I learned by building: create an app, test it, fix what needs fixing, then build the next feature. More than five years later, I build real applications for clients and run my own products, like GoOnlinePOS.com.

You can build an application around the way a business actually works.

Contact

What is your team still doing in spreadsheets?

Tell me about the process you want to turn into an app. I'll reply by email.

  • Describe the workflow in plain words. No technical details needed.
  • I work remotely, in English, with clients in the USA, Europe and Asia.
  • To keep spam out, I'll email you a 6-digit code to confirm your address before your message is sent.
  • You'll get a confirmation email as soon as your message reaches me.