Honest comparison · US

Influx Theory vs Bonsai

Bonsai bundles invoicing, contracts, proposals, time tracking, and tax estimation into one freelancer suite. Influx Theory does invoicing and only invoicing — and does it noticeably faster. Which one fits depends on how many tools you want in one place.

Pick Bonsai if you want one subscription for contracts, proposals, and invoicing. Pick Influx Theory if you already have tools for the rest and want the invoicing piece to be best-in-class.

FeatureInflux TheoryBonsai
Invoicing Best-in-classSolid, secondary to contracts
Contracts & e-signature Not included Included
Proposals Not included Included
Tax estimation Not included Included (US)
Recurring invoices Included Included
Starting price$19/mo unlimited$25/mo (Starter, limited)
Top-tier price$49/mo team$66/mo (Business)
Best for

Influx Theory

Freelancers who already use Notion, HelloSign, or DocuSign for contracts and just want the invoicing part to be excellent.

Pricing
$19/mo flat.
Best for

Bonsai

Freelancers who want one subscription replacing 4 tools, and are okay with each being 'good enough'.

Pricing
$25–$66/mo by tier.

Try Influx Theory free for 7 days

No credit card required. $19/mo after, unlimited everything.

Start free trial