nulllull
Software · Apps · Systems
Practical, well-crafted applications and software for real work and everyday use, including the TrakSift family.
Explore nulllullIndependent software & digital products studio
We build software
worth keeping.
Obsidian Spark is an independent studio building thoughtful, durable software, tools, and systems.
About Obsidian Spark
Obsidian Spark LLC is the parent company and home for our digital brands. We create practical, thoughtfully designed products organized into two focused branches: nulllull and SumCove.
Each has its own identity and purpose, united by a commitment to careful design and lasting usefulness.
What We Build
SumCove
Spreadsheets · Templates · Tools
Thoughtfully designed spreadsheets, templates, and useful tools to help you plan, track, and get things done.
Explore SumCoveOur Principles
Craft
Carefully designed, thoughtfully built, and polished for real use.
Durability
Built to last, with an emphasis on stability, maintainability, and long-term value.
Systems Thinking
Solving real problems with cohesive, well-considered systems, not just features.
Clarity
Simple, purposeful, and easy to use—so you can focus on what matters.
Let’s build something lasting.
Have a project, partnership, or idea to discuss? We’d love to hear from you.
Get in Touch