Custom software and apps for Montana businesses.
Modern Mustard Seed builds custom software and apps for businesses in Kalispell, the Flathead Valley and across Montana from our studio in Kalispell. We build web applications, iPhone and Android apps, customer portals, booking and quoting tools, dashboards and the internal systems that replace spreadsheets, then run them for you after launch with changes included. You own the code, the database and every account.
What We Build
Software shaped like your business.
01
Web applications
Quote builders, booking flows, dispatch boards and dashboards that run in any browser, built around the way your crew already works.
02
Mobile apps
iPhone and Android apps from one codebase, for your customers or for your team in the field.
03
Customer portals
A login where your customers see their project, their documents, their invoices and what happens next, without calling the office.
04
Internal systems
The tool that replaces the spreadsheet, the whiteboard and the three apps that do not talk to each other, with your data in one place.
How It Works
Five steps, one price agreed first.
- 01A conversationWhat the work looks like today, where it breaks, and who will use the software.
- 02A set package quoteScope, price and timeline agreed in writing before work starts. Never hourly.
- 03Design and buildYou click through the working software on a private link and tell us what to change.
- 04LaunchReal users and real data, on your domain and in your own accounts.
- 05We run itHosting, monitoring, updates and changes when the business changes. Included.
Proof
Software you can open.
Case study
PTG Deal Analyzer
For Presidential Title Group: a real estate investor pastes an address and gets a complete buy decision in under two minutes, built on RentCast data.
Read the buildCase study
DEED AI
A full-stack command center for homeowners selling their own house: the listing, the pricing, the offers and the contracts in one place.
Read the buildCase study
CXC Studio
A design platform built for one apparel brand, Cross + Covenant: six input modes, eight apparel types and one Generate Drop button.
Read the buildLive app
IRL
Our own app. Everybody answers five questions, a wheel spins, and out comes one real plan with street addresses on it.
Read the buildStraight Answers
What Montana owners ask about custom software.
Who builds custom software in Kalispell, Montana?
Modern Mustard Seed does, from our studio in Kalispell. We design and build custom software, web apps and mobile apps for businesses in Kalispell, Whitefish, Columbia Falls, Polson and across Montana, then run them for you after launch. Open the PTG Deal Analyzer and DEED AI builds on our work page, then call us at (406) 250-6076.
Who can build an app for my small business in Montana?
We can. Modern Mustard Seed builds iPhone, Android and web apps for Montana small businesses, for your customers or for your own team. We scope the app in one conversation, quote it as a set package, build it, launch it and keep it running, and you own the code and every account.
What is the difference between custom software and an off-the-shelf app?
An off-the-shelf app makes your business fit its screens. Custom software is built around the way you already work: your steps, your pricing, your paperwork and your customers. You stop paying for features you never use, and the tool does the job you actually need done.
Do I need a tech team to run custom software?
No. We host it, monitor it and change it when you ask, and changes are included. You own every piece and can take it in house any time.
How long does a custom software build take?
Most custom software and app builds run two to six weeks from kickoff. The timeline is fixed in the proposal alongside the price.
How much does custom software cost?
It is quoted as a set package in the conversation, scoped to what you need built, with the price agreed in writing before work starts. We never bill by the hour, and we do not publish prices on the site.
Name the tool you wish you had.
Tell us what the work looks like today and where it breaks. We answer inside one business day with what we would build first.
Start the ConversationOr call (406) 250-6076. Managed for you, end to end. You own every piece.