Invoice Ninja
Solo $11.67 · Team-5 $26.67/mo
G2 4.3 (22)
Open-source invoicing, quotes and payments, hosted or self-hosted.
Mobile-first invoicing and quotes for sole traders and small teams.
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Facts verified Nov 2026. Spotted a mistake?
Solo
$9.99/mo
≈ €9.99/mo
Team of 5
$19.99/mo
Flat
Billdu is an invoicing app for sole traders and small businesses, covering invoices, quotes, delivery notes, expenses and payment reminders across web and mobile. Its mobile apps are a strength, and higher plans add recurring invoices, team members, an API and a Xero integration. Plans cap the number of clients, and reviewers say the web version and support lag behind the apps.
Polished mobile apps for invoicing on the go.
Users like how quickly they can create and send professional invoices from the mobile app.
Some reviewers find the web app weaker than the mobile app and report slow or unhelpful support with billing issues.
Solo $11.67 · Team-5 $26.67/mo
G2 4.3 (22)
Open-source invoicing, quotes and payments, hosted or self-hosted.
Solo $16 · Team-5 $25/mo
G2 4.4 (11)
Simple online invoicing, time tracking and payments for freelancers and small teams.
$19/mo
Invoicing built for people who bill by the hour
Solo $15 · Team-5 $20/mo
G2 4.4 (330)
Full accounting with invoicing, automation and a free plan for tiny businesses.
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