✨ Now in Beta

Your tools.
Built by conversation.

Describe the tool you need and Spanner builds it instantly. Calculators, trackers, converters — created by AI, refined through chat, ready on your phone.

See How It WorksExplore Features

See it in action

A real conversation with Spanner's AI. What would have taken hours of coding takes seconds of typing.

Forge — New Tool

You: I need a tip calculator that splits the bill between friends

Spanner: Done! I created Tip Splitter — enter the bill amount, select a tip %, and choose how many people. Each person's share updates in real time.

You: Can you add a round-up option so nobody pays odd cents?

Spanner: Added! There's now a “Round Up” toggle. When enabled, each person's amount rounds up to the nearest dollar. ✨

Everything you need

Spanner combines the speed of AI with the polish of native apps.

🔧
AI Tool Builder
Describe any utility — tip calculator, unit converter, habit tracker — and Spanner creates a fully working tool in seconds.
💬
Conversational Refinement
Don't like the layout? Want a dark mode? Just tell the AI. Iterate through conversation until it's perfect.
📱
Native Mobile Experience
Tools live on your phone with an iOS-native look and feel. Smooth animations, system fonts, and haptic feedback.
🔒
Privacy First
Tools run locally in a sandboxed environment. No network access, no tracking. Your data stays on your device.
🎨
Automatic Theming
Every tool inherits your system theme. Light or dark, everything looks consistent and feels at home.
📤
Share & Discover
Found a tool you love? Share it with friends or browse community-made templates for instant inspiration.

How it works

Three steps to your custom tool.

1
Describe
Tell Spanner what you need in plain language. “I want a workout timer with rest intervals.”
2
Refine
Chat to tweak the design, add features, or change behaviour. The AI updates your tool in real time.
3
Use
Your tool is saved to your home screen, works offline, and syncs across devices. It's yours.

Ready to build?

Stop searching the App Store for tools that almost work. Build exactly what you need in seconds.

Get Spanner Beta