Built for clarity,
crafted with purpose.

🎯 Mission

We believe that digital tools should be fast, predictable, and private. Every app we build starts with a single question: “Does this make the user’s life simpler?” If the answer isn't a clear yes, we redesign it.

No subscription fees. No data harvesting. Just good software that respects your time and attention.

🧠 Philosophy

TennyTech is a one‑person operation (with a lot of coffee). I believe in:

• Minimalism – every pixel earns its place
• Openness – no black boxes, no vendor lock‑in
• Longevity – tools that work today, and next year
• Joy – using a tool should feel good, not frustrating

🛠️ Tools we offer

• ↔️ DXF → EPANET Convert CAD drawings to water‑network models with one click
• 🗺️ GeoSheet Turn spreadsheets into interactive maps — no GIS degree required
• 🖼️ Image Converter Resize, compress, and convert formats in your browser
• ✅ To‑Do List Simple, local‑first task management

⚡ Tech stack

Everything is vanilla, modern, and runs where you are — no cloud dependencies, no vendor lock‑in.

✦ 100% client‑side. Your data never leaves your device.