
AppSheet Consulting Services
Your data is already in spreadsheets, but they are becoming hard to manage, especially for mobile first users. Wouldn’t it be nice if you had an application to interact with your data that worked the same on a mobile device as it does on a desktop?
AppSheet turns your spreadsheets into a mobile app your team will actually use, and thank you for. You just need someone who knows how to build it properly.
Darren Mullen is an independent AppSheet consultant working with companies who need custom no-code apps built on top of their existing data, without the cost and complexity of traditional software development.
What Clients Have Built With Me
Here’s a sample of the work to give you a feel for the scope and complexity of solutions that I’ve built with AppSheet.
Aviation: Fixed-Base Operator (FBO) Operations Application
FBOs managing multiple aircraft with shared ownership need a way to track aircraft availability and expenses. Add on top of that, pilot schedules and maintenance requirements, and that’s a lot to track without a backbone to allow all the data sets to talk to each other. AppSheet is a perfect fit to develop a solution to allow everyone from pilots, office personnel, and the aircraft maintenance shop to access the same source of truth. Furthermore, AppSheet’s report generation abilities allows the FBO to send all expense reports to the respective owners with confidence.
Construction: Daily Reports
Every construction company relies on accurate daily reports to communicate job progress internally and to customers. AppSheet provides orchestration between field personnel, such as foreman and office personnel to collect and report daily on every job. Image capture and GPS logging ensure ease of use in the field, while the office can generate custom designed documents to archive and send to customers upon request. Given AppSheet’s relational data model, daily reports can easily be used to calculate job costs based on the field reporting actual material usage.
Construction: Field Sales and Pipeline Management
A construction company needed their field sales teams to have mobile access to their pipeline without giving everyone full access to the underlying Smartsheet data. We designed and built a custom AppSheet app that gives sales reps a clean mobile interface to view, update, and progress leads from the field, while customer service reps manage lead inake and followup from the office.
AppSheet Isn’t just for Construction and Field Operations
You’ll notice the solutions presented above focus on field operations, especially for construction. AppSheet is a natural fit for those use cases, but it can be used to make anything you’re doing in a spreadsheet easier to use and more scalable.
Case in point. A fitness and food tracking app designed to be used by clients of a fitness coach. Coach Joe of Big Man Travels was nice enough to allow me to showcase the solution we developed together!
How We Can Work Together
Every engagement is different. Here are the three ways most clients work with Smart Workflow Guru:
Project-Based
You need a specific app built. We scope the requirements, agree on what done looks like, and I build it. Project-based engagements work well when you have a clear use case. Example, a field inspection app, a job tracking tool, or a customer-facing portal and you want a finished product delivered properly.
Retainer
AppSheet apps evolve. Your data changes, your team grows, your processes shift. A retainer gives you consistent access to an experienced AppSheet consultant who already knows your setup. Great for ongoing improvements, new features, and someone to call when something needs fixing fast.
Team Training
AppSheet gives non-developers the ability to build their own apps, but there’s a learning curve. Consider customized training for your team built around your actual data and use cases, so they can take ownership and help themselves. Your team will get real training on what you need to build instead of generic tutorials.
Trusted by These Companies
What Can we Build Together? Book a Discovery Call to Find Out
Book a free discovery call and let’s talk through what you’re trying to build. This is a low pressure way to see if we are a good fit to work together and if AppSheet is right for your needs. If it’s not, I’ll tell you. Not only that, chances are I can guide you to the correct solution you need.
Don’t Need a Full Engagement?
If you have a specific AppSheet question or problem and don’t need a full engagement, a 1:1 coaching session might be the faster path. I work through your exact issue live over Zoom. No long term agreements, just focused help when you need it.
Frequently Asked Questions
Do I need to already be using AppSheet to work with you?
No. Many clients come to me with data in spreadsheets (Google Sheets, Smartsheet, or Excel) and no AppSheet experience at all. We start with what you have and build from there.
How is this different from hiring a developer?
AppSheet is no-code, which means faster builds, lower cost, and apps your own team can maintain after we’re done. You’re not dependent on a developer for every small change.
How long does a typical project take?
It depends on complexity, but a focused single-use app can be scoped, built, and delivered in 2โ4 weeks. More complex relational solutions with multiple user roles take longer and are better suited to a retainer engagement.
What do I need to provide to get started?
Usually just access to your existing spreadsheet data and a clear description of the problem you’re trying to solve. The discovery call is where we work out the rest.
Can AppSheet connect to systems we already use?
Yes. AppSheet integrates natively with Google Workspace, and can connect to other data sources including SQL databases, Smartsheet, Microsoft Online, and more. If you’re already in the Google ecosystem it’s an especially natural fit. Furthermore, Appsheet can post data to external API’s and receive data in over the Appsheet API.
What happens after the app is built?
You own it. I can hand it off with documentation and a walkthrough, or stay on retainer for ongoing improvements as your needs evolve.
Do you offer training for our team?
Yes, team training is one of the three ways we work together. I build the training around your actual app and data, not generic AppSheet tutorials.

Darren Mullen
Consultant & Instructor
Darren is the founder of Smart Workflow Guru and is ready to guide you on your journey to becoming an expert. He is known for his Smartsheet and Appsheet consulting work under his company brand, Smartsheet Guru. Also under this banner he built a successful group Smartsheet coaching program known as the Smartsheet Guru Elite. Furthermore, he provides, and enjoys, coaching Smartsheet users both in the group setting and one on one.
His love for teaching shows through on his YouTube channel and with his publishing of 2 books on Smartsheet, Smartsheet User Guide for Accelerated Learning and Smartsheet Architecture Solutions. Both of which achieved the coveted orange bestsellers badge on Amazon.
When he’s not busy consulting, creating content or courses, he enjoys spending time with his growing family in the Southern Arizona desert.













