Insights

Established Expertise Appstem has a proven track record since 2010 of partnering with Fortune 500 companies and high-growth startups to develop over 250 successful digital products, demonstrating their ability to handle complex, large-scale projects.

Industry Recognition Recognized as a top development company and a leader in IoT and mobile app development in San Francisco by Clutch, Appstem’s reputation can be leveraged to position it as a premium provider for innovative clients seeking cutting-edge digital solutions.

Expanding Talent Recent hiring of industry veteran Mitch Zenaty indicates strategic growth in sales capabilities, presenting an opportunity to target the company as it scales and seeks new high-value clients.

Strong Tech Stack Utilizing advanced tools like PWA, HubSpot, and modern web frameworks, Appstem is well-positioned to support clients looking for modern, scalable, and user-friendly digital products, especially in areas like telemedicine, IoT, and sports apps.

Collaborative Partnerships Partnerships with academic institutions such as the University of California, Davis, highlight Appstem’s engagement in innovative projects like telemedicine, opening avenues to connect with healthcare and research organizations seeking custom digital solutions.

Appstem Tech Stack

Appstem uses 8 technology products and services including DoubleClick Floodlight, Prismic, Emotion, and more. Explore Appstem's tech stack below.

DoubleClick Floodlight

Advertising

Prismic

Content Management System

Emotion

Javascript Frameworks

Polyfill

Javascript Libraries

Modernizr

Javascript Libraries

HubSpot

Marketing Automation

PWA

Miscellaneous

ZURB Foundation

UI Frameworks

Appstem Email Formats	Example	Percentage
First.Last@appstem.com	John.Doe@appstem.com	90%
First@appstem.com	John@appstem.com	10%

Appstem Email Formats

Example

Percentage

First.Last@appstem.com

John.Doe@appstem.com

90%

First@appstem.com

John@appstem.com

10%

Frequently Asked Questions

Where is Appstem's headquarters located?

Appstem's main headquarters is located at 133 Kearny Street Suite 202 San Francisco, California 94108 United States. The company has employees across 2 continents, including North AmericaEurope.

What is Appstem's phone number?

You can contact Appstem's main corporate office by phone at

+1-415-956-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Appstem's official website and social media links?

Appstem's official website is appstem.com and has social profiles on LinkedIn.

What is Appstem's SIC code NAICS code?

Appstem's SIC code is 7371 - Computer Programming Services NAICS code is 541511 - Custom Computer Programming Services.

How many employees does Appstem have currently?

As of May 2026, Appstem has approximately 16 employees across 2 continents, including North AmericaEurope. Key team members include Head Of Business Development: S. F.Senior Project Manager: D. C.Software Engineer: A. M.. Explore Appstem's employee directory with LeadIQ.

What industry does Appstem belong to?

Appstem operates in the IT System Custom Software Development industry.

What technology does Appstem use?

Appstem's tech stack includes DoubleClick FloodlightPrismicEmotionPolyfillModernizrHubSpotPWAZURB Foundation.

What is Appstem's email format?

Appstem's email format typically follows the pattern of First.Last@appstem.com. Find more Appstem email formats with LeadIQ.

When was Appstem founded?

Appstem was founded in 2010.

Appstem

Q: What is Appstem's official website and social media links?

Appstem's official website is appstem.com. Appstem has social profiles on LinkedIn.

Q: How many employees does Appstem have currently?

Appstem has approximately 16 employees.

Q: What technology does Appstem use?

Appstem's tech stack includes jQuery, Polyfill, HSTS, Google Cloud DNS, Figma.

Q: What is Appstem's NAICS code?

Appstem's NAICS code is 541511 (Custom Computer Programming Services).

IT System Custom Software DevelopmentCalifornia, United States11-50 Employees

Appstem is a San Francisco-based firm that designs and builds custom software to address complex business challenges. It delivers end-to-end development for web, mobile, and emerging product platforms, balancing engineering rigor with a focus on user-friendly design. Since its founding in 2010, Appstem has partnered with Fortune 500 brands and high-growth startups to launch more than 250 apps. 

In the IT system custom software development space, the company operates as a small-to-mid-sized team and positions itself as a blend of a full-service agency and a boutique firm, emphasizing close collaboration and attention to detail. The firm has earned industry recognition, including being named a top development company in San Francisco by Clutch in 2018. A recent development noted in its news is the hiring of Mitch Zenaty in November 2023 to lead the expansion of its sales capacity.

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Appstem Tech Stack

Media & News

Appstem hires Mitch Zenaty.

Appstem recognized as top development company in San Francisco by Clutch.

Appstem recognized as Top Internet of Things of Companies.

Appstem recognized as Top Mobile App Developers.

Appstem launched Ridey on Feb 20th '18.

Appstem partners with University of California.

Appstem partners with University of California, Davis.

Appstem's Email Address Formats