Professional Logo Design for App

We are looking for a unique and professional logo design for our mobile/web applicatio.

It is a management and tracking system designed for elevator service companies. Through this application, users can:

* Track malfunctioning buildings
* Manage maintenance and service operations
* Monitor financial records (income/expenses, client accounts)

The logo should reflect technology, reliability, maintenance/service, and a strong corporate identity. It should also be modern, simple, and memorable.

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Design Requirements:

* 100% original design (no templates or copies)
* Modern and minimal style preferred
* Suitable for both mobile app icon and general branding
* Must work on both light and dark backgrounds

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Deliverables:
The designer must provide all of the following formats:

* PNG (with transparent background)
* JPG (high resolution)
* SVG (vector format)
* AI or EPS (source files)
* PDF version

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Logo Variations:

* Full color version
* Black version
* White (negative) version
* Icon-only version (for app icon)
* Horizontal and vertical layouts

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Nice to Have (Bonus):

* App icon / favicon optimized versions
* A simple brand guide including color codes and font details

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Target Audience:
Elevator maintenance companies, technical service teams, and field workers

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Style References / Inspiration:
Industrial, technical, and SaaS-style logos are preferred. Clean and strong branding is important.

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Additional Notes:

* Initial concepts will be reviewed and revisions will be requested
* Designer should be open to revisions