# AppNarrow

> Fit-first software decision tools for solopreneurs and microbusinesses. AppNarrow treats choosing neither and keeping current software as valid outcomes. Affiliate relationships are disclosed and never override buyer fit.

## Start here

- [Paid newsletter fee decision](https://appnarrow.com/tools/substack-vs-kit-fee-calculator.html): Calculate current Substack and Kit Commerce fees, then weigh discovery value and migration friction.
- [AI-readable paid newsletter decision](https://appnarrow.com/tools/substack-vs-kit-fee-calculator.md): Concise Markdown version with assumptions, formulas, outcomes and official sources.
- [Pre-revenue software gate](https://appnarrow.com/tools/pre-revenue-software-gate.html): Decide whether to buy software before revenue is proven.
- [Software subscription audit](https://appnarrow.com/tools/software-stack-cost-audit.html): Keep, cut or consolidate a solopreneur software stack.
- [Course platform readiness](https://appnarrow.com/tools/course-business-platform-readiness.html): Decide whether a course business needs a platform change.
- [Digital product platform narrower](https://appnarrow.com/tools/digital-product-platform-narrower.html): Match the operating model before choosing a vendor.

## High-intent comparisons

- [beehiiv vs Kit](https://appnarrow.com/comparisons/beehiiv-vs-kit.html)
- [MailerLite vs Kit](https://appnarrow.com/comparisons/mailerlite-vs-kit.html)
- [Systeme.io vs Kit](https://appnarrow.com/comparisons/systeme-io-vs-kit.html)
- [Kajabi vs Systeme.io](https://appnarrow.com/comparisons/kajabi-vs-systeme-io.html)
- [ClickFunnels vs Systeme.io](https://appnarrow.com/comparisons/clickfunnels-vs-systeme-io.html)

## Trust

- [Methodology](https://appnarrow.com/methodology.html)
- [Affiliate disclosure](https://appnarrow.com/disclosure.html)
- [Privacy](https://appnarrow.com/privacy.html)

AppNarrow does not claim hands-on use unless explicitly stated, does not guarantee discovery or earnings, and cites current official merchant sources for decision-critical facts.