Polar alternatives

When Polar is not a good fit

Polar is a billing and monetization platform positioned as a merchant of record for developers, handling payments, subscriptions and usage-based billing with global tax compliance included. It's aimed at software and AI companies that need to meter usage like tokens, API calls or compute alongside traditional subscriptions. Pricing combines a monthly plan fee with a per-transaction rate that drops as the plan tier increases, starting free at 5% + $0.50 per transaction.

It is a weaker choice for:

• Very high-volume businesses where a negotiated payments contract elsewhere might beat percentage-based fees
• Teams that want to be the merchant of record themselves rather than delegate that role
• Simple flat-rate products with no usage-based component, where a simpler payment processor may be enough

Tool	Pricing	Free plan	Paid from	Open source	GitHub stars
Polar	Freemium	Yes: the Starter plan has no monthly fee, only per-transaction fees	$20 a month for the Pro plan	No	10.3k
Stripe	Pay as you go	No: pay per successful transaction, no monthly fee on the standard plan	2.9% + 30 cents per successful US card transaction	No	4.5k
Stripe Billing	Pay as you go	No dedicated free plan; the pay-as-you-go option has no monthly fee, only a percentage of billing volume	0.7% of billing volume on the pay-as-you-go option, or from $620 a month on fixed subscription plans	No	4.5k
Lago	Freemium	Yes: the open source edition is free to self-host	Custom pricing (Lago Premium, contact required)	Yes, AGPL-3.0 (open source edition)	10.7k
RevenueCat	Freemium	Yes: free up to $2,500 in monthly tracked revenue	1% of monthly tracked revenue beyond the free $2,500 threshold	No	None
Square	Freemium	Yes: Square Free plan with pay-as-you-go processing rates and no monthly fee	$49 a month per location for the Plus plan	No	None
Adyen	Pay as you go	No free plan; there are no setup or monthly fees, only per-transaction charges	$0.13 per transaction plus a payment-method-specific fee (for example Visa: $0.13 + interchange + 0.60%)	No	None
Paddle	Pay as you go	No monthly fee on the standard plan; you only pay per transaction	5% + 50 cents per transaction	No	None
Braintree	Pay as you go	No free tier, but no monthly or setup fees on the standard plan	2.89% + $0.29 per transaction (standard card rate)	No	None
Lemon Squeezy	Pay as you go	Yes: no monthly fee, free to start with no credit card required	5% + 50 cents per transaction, no monthly charge	No	None
Chargebee	Freemium	Yes: Flow plan is free up to $20,000 in monthly billing volume	0.80% of billing volume above $20,000 a month on the Flow plan	No	None
Gumroad	Pay as you go	Yes, no monthly fee; you only pay per-transaction fees	5% + (3.5% + $0.30) per transaction	No	None
Mercury	Freemium	Yes: checking and savings accounts have no monthly fee and no minimum balance	Not listed	No	None
PayPal	Pay as you go	No monthly fee for a standard business account; fees are per transaction	3.49% + $0.49 per transaction (domestic PayPal Checkout)	No	None
PPaystack	Pay as you go	No monthly fee; fees are charged per transaction	1.5% + ₦100 per transaction (Nigeria, local cards, capped at ₦2,000)	No	None
Wise	Pay as you go	No monthly account fee for personal accounts; fees apply per transfer	0.24% per transfer or conversion	No	None

Pricing facts come from each tool's official pricing page, with the checked date on the tool's own page.