Who we are

JustSum began as a calling to serve others by helping organizations restore confidence in their data and systems so they can focus on what matters most: their mission.

As a husband-and-wife team, both former service members, we carry forward the values of integrity, discipline, and dedication that shaped our military careers. Being a veteran-owned business is more than a title, it reflects our commitment to serve with excellence, reliability, and purpose. Our faith is also at the core of who we are. It guides our work, shapes our perspective, and fuels our passion for walking alongside others with humility and care.

With nearly 12 years of collective experience working with data across both nonprofit and corporate sectors, we bring a unique perspective that blends technical expertise with a deep passion for impact. Nearly half of that experience has been within the nonprofit space, giving us firsthand insight into the challenges organizations face with data, fundraising technology, and internal processes.

What drives us most is helping people. Whether that’s cleaning up a database, streamlining systems, or equipping staff through training and coaching, we believe in empowering organizations with the tools and knowledge they need to succeed. Teaching and equipping others to feel confident in using data to further their mission is at the heart of why JustSum exists.

At JustSum, we combine a love for numbers with a love for people—grounded in faith, strengthened by service, and committed to turning messy data into clarity, and clarity into growth.

Computer on a table with data on the screen

Meet the Team

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    Summer

    Summer Prettyman is the co-founder of JustSum and the heart behind its vision to serve organizations with clarity and care. With a career rooted in roles of service from banking and advising customers to serving as a corrections officer, military service member, and nonprofit leader. Summer has always been drawn to helping others find strength and direction.

    Her passion lies in being a trusted resource and guide. Whether it’s supporting clients through data challenges, coaching teams, or simply walking alongside people in their journey, she brings both technical knowledge and genuine compassion to every project.

    Grounded in her faith, Summer believes that work should be more than tasks and numbers, it should be a way to make a difference in people’s lives. Through JustSum, she combines her love of people with her expertise in systems and data, empowering organizations to feel confident, capable, and focused on their bigger mission.

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    Justin

    Justin Prettyman brings both discipline and dedication to his role as co-founder of JustSum. As a veteran and business owner, he understands the importance of structure, accuracy, and reliability, qualities he now applies to helping organizations bring order to their finances.

    With a sharp eye for detail and a steady commitment to service, Justin specializes in making bookkeeping feel simple and manageable. His goal is to take what often feels overwhelming and turn it into clarity, giving leaders the confidence to focus on what matters most.

    At the heart of Justin’s work is the same spirit that has guided him throughout his life: service, integrity, and the desire to support others. Through JustSum, he’s proud to help both nonprofits and businesses find the financial stability they need to grow and thrive.

Contact us

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