Polar

Overview

Polar combines subscription billing, usage metering, digital delivery and merchant-of-record services for software businesses, with a particular fit for AI products that charge by consumption. It is a strong option when a team wants billing and tax handling in one stack, provided it can enforce customer quotas in its own product and account for transaction fees.

Key features

Polar converts submitted events into customer meters and adds metered-price line items to the next invoice. Meters can count or sum events, calculate averages and minimums or maximums, and track unique values. Ingestion strategies cover LLM usage, streaming responses, S3-compatible storage, elapsed time and manual submissions; LLM support includes the Vercel AI SDK and compatible models that return usage data. This range accommodates varied billing metrics, but the meters do not block usage when a customer exceeds a quota. Teams need to build that enforcement separately.

As merchant of record, Polar says it resells products in over 100 markets and handles payments, sales tax, fraud, refunds and chargebacks. Hosted checkout supports localized currencies and includes sales tax. Automated benefits can deliver usage credits, software license keys, downloads up to 10GB, private GitHub repository invitations, and Discord invitations and roles. These delivery options make Polar relevant to businesses selling access and digital goods as well as subscriptions.

Stripe processes payments, and Polar says it does not store full card numbers or sensitive payment credentials. Its data processing addendum specifies encryption in transit and at rest, vulnerability scanning, access controls and security logging. Polar also lists iOS and Android apps and Raycast and Framer plugins, extending its reach beyond a web billing workflow.

Pricing

Starter is free and charges 5% + 50¢ per transaction. It includes all features to sell and standard support, making it a way to start without a monthly fee; the higher transaction rate is the trade-off. Pro costs $20/month and charges 3.80% + 40¢ per transaction, with preview access to new features and prioritized support. It suits teams whose sales volume makes the lower rate and support upgrade worth the recurring fee.

Growth costs $100/month and charges 3.60% + 35¢ per transaction, with preview access and prioritized support. Scale costs $400/month and charges 3.40% + 30¢ per transaction; it adds a shared Slack channel, P1 support and Single Sign-On alongside preview access. Those tiers are aimed at higher-volume or more support-sensitive teams that can justify the monthly cost through lower transaction charges or the additional service. Each successive paid plan lowers the percentage and fixed fee, but the best fit depends on transaction volume and the value of its support or account features.

Platforms

Polar supports Android, iOS and web, and also lists an API and extension. Its multi-channel checkout and digital delivery fit teams selling across more than a single web storefront.

Who it's for

Polar is best suited to software and AI teams that need subscription and usage billing, digital delivery, and merchant-of-record payment and tax services in one system. It is less suitable for products that need the billing layer itself to stop a customer at a usage limit, since quota enforcement remains the product's responsibility.

Pros and cons

• Pros: Flexible meters and several ingestion strategies support different consumption-based pricing models.
• Pros: Merchant-of-record handling, localized checkout and automated digital benefits bring payment administration and delivery into the same stack.
• Pros: Paid plans reduce transaction rates and add prioritized or P1 support, with Single Sign-On on Scale.
• Cons: Meters do not enforce quotas, so teams must implement controls in their own product.
• Cons: The free Starter plan has the highest stated transaction charge, while lower rates require monthly fees on paid plans.

Alternatives

For a broader comparison of merchant-of-record options, see Merchant of Record Software.

Tebex is a freemium alternative with a free plan and free trial; its Starter plan has no monthly fee and charges 5% for most games or 15% for FiveM, making it a relevant option for game sellers comparing platform fees.

Coda offers a free plan whose shared documents are limited to 50 objects and 1,000 table rows, making it worth considering for teams whose needs center on its document model.

Aquadratic has a free platform plan with a 7% transaction charge, no monthly fee and no per-transaction minimums, which may suit sellers prioritizing a no-monthly-fee model.

Fungies offers a free-forever plan charging 5% + 50¢ per sale, with no monthly fee, setup cost or per-seat charge and unlimited products, plans and assets; it is a straightforward alternative for sellers prioritizing those terms.

Lemon Squeezy has no monthly ecommerce charge and applies transaction fees when sales are generated, an alternative for sellers who prefer no recurring ecommerce fee.

FastSpring uses custom pricing through a revenue-sharing model whose rates depend on transaction volume and type; consider it when a custom commercial arrangement is preferable.

Breeze is another paid merchant-of-record option.

Freemius charges 3.8% + 50¢ per transaction plus gateway fees, with no setup or monthly fees; it may suit teams seeking transaction pricing without a monthly charge.

Verdict

Choose Polar if you run a software or AI product that needs usage-based and subscription billing alongside merchant-of-record payment and tax handling. Its combination of metering, checkout and digital delivery is the main draw; look elsewhere if you need quota enforcement built into the billing layer or cannot justify transaction charges and, for lower rates, a monthly plan.