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App Development Company

HSTK Haystack

US custom software, web and mobile app developer for energy, utility and marketing clients

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About HSTK Haystack

HSTK Haystack is a United States software consultancy that builds custom web and mobile applications. It starts each project by asking why a system is needed before choosing what to build.

What HSTK Haystack offers

Mobile app development — applications for phones and tablets.
Custom web applications — software built around a client's processes.
Business process automation — replacing manual or outdated workflows.
Software integration — connecting separate systems.
Maintenance and replacement — keeping, improving or replacing applications that no longer do the job.

Who it works with

The firm now focuses on energy and utility innovators, and has also supported creative marketers and agency partners. It uses an onshore team of engineers, strategists and consultants and works on a small-first, test and iterate basis.

Key facts

Based in: United States
Team: onshore engineers, strategists and software consultants
Approach: launching a minimum viable product before adding extras

Profile written by TrustList from the business's own published information, Oct 2026.

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