Sheet 00Apps · Products by creative-itDrawn: G.W.Scale 1:1

Focused tools. Built to be used

Small apps that solve real problems — built by the same person and the same agents that build creative-it's client systems. Scroll, and watch each one do its job.

Scroll to run the use cases

Pos.ItemStatus

01

GeoHookiOS · Location → Webhook ● Live 02

MerkzeugMac · iOS · Linux · IntelliJ ● Live 03

AInvoiceMateAI invoice processing Soon

Sheet 01GeoHook · Location → WebhookiOS

GeoHook

● Live · iOS · Free core app

Webhooks, fired by where you are. Cross a boundary and GeoHook calls Home Assistant, IFTTT, n8n — anything with a URL.

Case A · Entry

The garage that expects you

The door opens as you roll in — but only when your car is actually with you, detected via CarPlay, hands-free Bluetooth, Tesla Phone Key or an iBeacon.

Case B · Movement condition

Home from the ride

GeoHook knows how you arrive. Back from the bike tour, the garage opens for the bike and the garden lights come on — no extra hardware, just your iPhone.

Case C · Exit

Leave, and the house follows

Entry and exit get separate actions. Drive off and Home Assistant switches to away: lights off, heating to eco — every time, without a tap.

Up to 20 areas · lead-in zones
Location stays on the device
Full event history per trigger

Open app →

Event history · GeoHookCase A

17:42:08 APPROACH Home · lead-in zone
17:42:19 CONDITION CarPlay connected ✓
17:42:31 ENTER Home
→ POST https://ha.local/api/webhook/garage_open
{"trigger":"enter","location":"Home"}
← 200 OK · 184 ms

18:05:44 APPROACH Home · lead-in zone
18:05:50 CONDITION Motion: cycling ✓
18:06:02 ENTER Home
→ POST https://ha.local/api/webhook/ride_home
{"trigger":"enter","location":"Home"}
← 200 OK · 97 ms

07:58:02 CONDITION CarPlay connected ✓
07:58:40 EXIT Home
→ POST https://ha.local/api/webhook/away
{"trigger":"exit","location":"Home"}
← 200 OK · 143 ms

Sheet 01 / 03

Sheet 02Merkzeug · Markdown → DocumentMIT

Merkzeug

● Live · Mac · iPhone · iPad · Linux · IntelliJ

Markdown. Your way. Explore and edit Markdown collections visually, then turn them into documents with your own layout.

Case A · Your files

One folder. Your whole collection.

A vault is just a folder of Markdown — your notebook, a cloud folder, or the docs beside your code. Written by you or by your agents; Git keeps working as before.

Case B · Read & edit

Less syntax. More perspective.

Headings, tables and tasks are edited visually. Mermaid diagrams render right inside the document — edit the code, see the result, keep reading.

Case C · Your layout

Linked notes. One finished PDF.

An overview note pulls its linked notes into one PDF — with your letterhead, typography and layout. Templates travel with the repository.

Plain Markdown files, no import
HTML/CSS templates for PDF
Open source · MIT license

Open app → GitHub ↗

Merkzeug — handbook/

▾ handbook/
Overview.md●
Architecture.md●
▸ Architecture.assets/
Runbook.mdagent●
AGENTS.md
▸ templates/

⎇ main · synced

# Project Handbook

Everything the team needs, in one folder.

- [Architecture](Architecture.md)

- [Runbook](Runbook.md)

SourceVisual

## Request flow

| Service | Role |

|---|---|

| API Gateway | HTTPS entry |

| Lambda | Business logic |

- [x] Load test passed

```mermaid

graph LR; Client-->API-->Lambda

```

Request flow

Service	Role
API Gateway	HTTPS entry
Lambda	Business logic

Load test passed

creative-it

Project
Handbook

Overview · Architecture · Runbook

1 Overview2
2 Architecture4
3 Runbook9

Confidential1 / 12

3 notes → 1 PDFTemplate: letterhead.css

Sheet 02 / 03

Sheet 03In the worksDrawn: G.W.

Next on the drawing board.

Every app here started as a problem worth solving properly. Have one of your own? The same process builds client systems — serverless on AWS, with agents where they help.

Talk about your tool

AInvoiceMate

Coming soon

AI-powered invoice processing for your accounting workflow. Scan invoices, extract the data automatically, and export to sevDesk, DATEV, Google Sheets and more.

More at creative-it.com →