Connect requirements, components, tasks and risks.
Keep costs, calculations and evidence in the same project.
Free plan · No card required · 75 built-in calculators
Must · Analysis · Physical verification remains open.
Connected project / Aquila S1
Follow a requirement through its tasks, components, risks and test evidence. Select a record to explore its relationships.
A project is more than a task list. Its relationships tell the engineering story.
Use the inspector as a keyboard-accessible relationship list. The live interactive map is a Pro feature.
Traceability / Interactive workspace preview
See which tasks implement a requirement, which components it affects and what evidence supports it. Select a record to inspect its context, or try creating a connection in this fictional Pro preview.
Build, inspect and manage Aquila's engineering relationships.
Project workflow / From brief to build
Define requirements, organise components and plan the work that connects them. Track purchasing, budgets and risks alongside the decisions and tests that move the design forward.
Explore planning, engineering, validation and documentation.
Engineering Notebook / Research to evidence
Keep dated research, design decisions and test evidence together. Follow an entry back to its component, requirement or design cycle, so the reasoning stays useful in the next iteration.
Basic Timeline & Library / FreeExplore research, design cycles and test evidence.
Engineering calculators / Built into the workflow
Explore 75 built-in engineering calculators, or create your own in the workspace. Try a calculation here, then use a project to retain calculation history and engineering context.
Try a live engineering calculation.
Versions & design cycles / Change in context
Organise requirements, tasks and evidence by design version. Use cycles and iterations to track what you are testing, what changed and which questions still need an answer.
Compare example design-version context.
Fictional V1–V4 record associations. Version views provide context; they are not automatic snapshots or rollback.
Built for engineering. From the start.
A task list shows the next action. Nodetropy connects that action to the requirement, component and risk behind it, with purchasing information and test evidence close at hand. Built for student projects, robotics teams, makers and independent engineering work.
Free & Pro / Choose your project scope
Core engineering tools from day one. More scale and deeper connected workflows when you need them.
One active project. The tools to give it structure.
No card required for Free.
Unlimited core planning scale. Full engineering context.
Checkout is not enabled yet. An optional 7-day, card-required trial is planned; it is not activated by this link.
| Capability | Free | Pro |
|---|---|---|
| Active projects | 1 | Unlimited |
| Active tasks | 15 · 5 subtasks per task | Core limits removed |
| Requirements / risks / versions | 12 / 5 / 5 | Core limits removed |
| Cross-system integration links | 30 per project | Advanced connected workflows |
| Components, BOM & Budget records | Unlimited | Unlimited |
| Built-in calculators | All 75 | All 75 |
| Custom calculators | 3 | Unlimited |
| Engineering Notebook | Timeline & Library | Full engineering Notebook |
| Timeline & task dependencies | — | Included |
| Interactive Traceability Map | — | Included |
| BOM integrations | — | Included |
Structural relationships do not consume the Free integration-link allowance. BOM integration links are Pro-only.
A few useful answers
People building physical engineering projects: student engineers, robotics teams, makers and independent builders. Requirements, components, costs, calculations and evidence share one project context.
Yes. Free includes one active project, 15 active tasks, 5 subtasks per task, 12 requirements, 5 risks, 5 versions, 30 cross-system integration links and 3 custom calculators. Components, BOM items, Budget records and built-in calculators have no count limit.
Yes. All 75 built-in calculators are available on the public calculator pages. Public calculations are not saved. Use a project workspace to keep calculation history and work with engineering objects and properties.
The interactive Traceability Map, Timeline, task dependencies, BOM integrations and advanced Notebook areas are Pro capabilities. Basic Notebook Timeline and Library remain available on Free.
Pricing is coming soon and secure checkout is currently disabled. A card-required, optional 7-day Pro trial is planned. Creating a Free account does not require a card.
Engineering data is not deleted just because Pro access ends. Free-plan limits and restrictions on Pro-only actions apply. See the current plan information and documentation for details.
Your next project
Start with a requirement. Give your next engineering project a connected home.
Start building for free