Custom Software · San Marcos, TX
High-volume San Marcos businesses push more transactions and customers through their tools than off-the-shelf apps are built to handle. We build custom apps and software for San Marcos companies: booking systems, customer portals, internal dashboards, and automations that match exactly how you operate. Built and tested by engineers, not outsourced.
When the software almost fits, your team pays for the gap every week, in time, workarounds, and lost work.
Your team loses hours every week wrestling spreadsheets and apps that almost fit but never quite do.
Generic software charges you per seat for a hundred features you will never touch, and still cannot do the one thing you need.
When something breaks or you need a change, you are stuck in a support queue with a company that has never heard your name.
There's a Better Way
We build custom software for San Marcos businesses that fits exactly how they work: booking, scheduling, portals, dashboards, and automations, and we test it hard before it launches. Engineers you can reach, right here in the area.
What You Get
Built around how your business actually works, not forced into a template.
Scheduling, customer portals, dashboards, and the day-to-day tools your team needs.
With a real software-QA background, we test it hard so it works the day it launches.
We connect your tools and automate the busywork so things just run.
We stay reachable and keep your software running long after launch.
Engineers you can meet in person, based in the Hill Country.
Want the full rundown? See our Custom Software page.
Why Work With Us
We are a small, local business serving San Marcos and the surrounding area. San Marcos businesses move serious volume, with steady visitor traffic and a retail strip that swells and slows by season, and generic software rarely accounts for that kind of swing. You work directly with the engineers who write and test your software, and a monthly meeting gives you a set time to talk through what comes next.
Based in Bandera, so we know your market and can meet in person whenever you like.
When you call or email, you reach one of us directly, and a monthly meeting gives you a set time to talk.
We come from a software-QA background, so everything we build is tested hard before it goes live.
We measure success by time saved and problems solved, not by how the dashboard looks.
How It Works
We learn how your business works and exactly what you need the software to do, free.
We map out the build and give you a clear plan and price before any work starts.
We build it and test it hard, the same QA discipline behind everything we ship.
We launch, train your team, and stay reachable to support and improve it.
Proof
+40%
more business, year over year, after a website redesign.
"They redid my website and my business has increased about 40% over the previous year, I'm showing up a lot more in searches."
Sheila Carmon · Website redesign
For Hill Country Pest Control, we grew organic search traffic and earned rankings in new service areas they hadn't reached before.
Hill Country Pest Control · Local SEO
For Park Rapids Boat Rental, we solved a problem in their booking and software system they'd struggled with, then optimized their site and SEO.
Park Rapids Boat Rental · Custom software
For Oil Connection, we took a Ruby web app that hadn't been updated since 2016 and brought it up to the current version of Ruby on Rails.
Oil Connection · Custom software
5.0 on Google
"This is THE go-to if you're needing a great website built and maintained. Preston is super knowledgeable and does a great job communicating with you throughout the entire process. He did a great job on my website. Highly recommend."
Eric Rabenschlag · Google review
"They helped me clean up my website after being hacked. Now I use them for monthly monitoring and I feel so much more confident in the health of my website. I appreciate the monthly check-ins and their quick responses to my questions."
Sylvia Stadler · Google review
"I hired them to do my website and they took the time to ask for my input on design and then made any requested changes after the initial release. The entire process was enjoyable. I highly recommend Allen Design and Development for their skillset and customer satisfaction."
Mark Weeda · Google review
Local & Invested
San Marcos moves a lot of volume, with the outlet malls, steady visitor traffic, and fast customer turnover pushing local businesses hard, and that scale is exactly where custom software earns its keep. We handle custom software development for San Marcos companies, building custom apps and web tools, from booking and scheduling systems to customer portals, internal dashboards, and automations that take busywork off your team. Whatever your business does, we build the tool that fits it.
We come from a software-engineering and QA background, so everything we build is thoroughly tested before it touches your business. We are local to San Marcos and the area, so you can meet the people building your software and reach us when you need a change. We already run our own business on custom software, so it comes from hands-on experience.
Also serving nearby:
Custom web apps and tools: booking and scheduling systems, customer portals, internal dashboards, inventory and job tracking, and automations between the tools you already use. If a process is repetitive or your current software does not fit, we can build something that does.
It varies with the scope, so we scope it carefully and give you a clear quote before any work starts. Book a free consultation and we will talk through what you need.
When off-the-shelf almost fits but costs you time and workarounds every week, custom usually pays for itself. If an existing tool is the better call, we will tell you.
Yes. We are based in nearby Bandera and work with businesses throughout San Marcos and the Hill Country, in person or remotely.
Yes. We test thoroughly before launch and stick around to support and improve your software. You talk to the engineers who built it, not a queue.
We do custom software development for San Marcos businesses: web apps and mobile apps with Flutter, customer portals, booking systems, and dashboards, built around how you actually work.
Yes. We build an MVP to test it for real before you spend big, and full SaaS products. We're building our own SaaS right now, so we know the path.
Yes. We do legacy modernization, the way we brought Oil Connection's old Ruby app up to date, and we build the integrations that connect the tools you already use.
Engineers with a software and QA background build and test it, and you own the code. We're local and easy to reach long after launch.
Yes. We build custom software for small businesses anywhere, with a dedicated San Antonio app development page. See our work for examples. Either way, it starts with a free consultation: we learn how your business runs, tell you honestly whether custom software is worth it, and give you a clear quote and roadmap before any work begins, no open-ended bills.
Custom Software · San Marcos, TX
Book a free consultation. We will map out exactly how custom software can save your team time and pay for itself, and you will leave with a clear plan for what's next.
