The back office your invoicing business deserves

TendrOS runs operations for Tendr. Market research, competitor tracking, customer outreach, growth metrics. One autonomous system, always working.

$18.6B Invoicing market by 2029
76.4M US freelancers needing billing tools
19.5% Annual market growth rate

What TendrOS handles autonomously

Every day, Polsia works on the business while you work on the product.

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Growth Metrics

Invoice volume, payment success rates, revenue trends, customer retention. Tracked daily, reported weekly.

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Competitor Intelligence

Wave, FreshBooks, Zoho, Invoice Simple. Monitored for pricing changes, new features, and market moves.

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Customer Outreach

Find freelancers and small businesses frustrated with their current invoicing. Personalized cold outreach at scale.

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Product Engineering

Feature builds, bug fixes, code reviews. Polsia ships code to production through your GitHub repo.

Invoicing should be invisible

Freelancers don't dream about sending invoices. They dream about doing great work and getting paid on time. Tendr makes billing disappear into the background, so creators can focus on what actually matters. TendrOS makes sure Tendr itself grows the same way.

How it works

01

Research

Polsia maps the competitive landscape, identifies prospects, and surfaces market opportunities daily.

02

Build

Engineering tasks get queued and executed. New features, performance improvements, infrastructure upgrades.

03

Grow

Cold outreach, content, partnerships. Polsia finds customers and brings them to Tendr's door.

One founder. One product. One autonomous system running the rest.

TendrOS is the operational layer that lets a solo founder compete with funded teams.