Polar

Overview

Polar combines subscription billing, metered usage charges, invoicing and digital delivery for teams selling software or AI services. It is best suited to products with variable consumption and international sales; it is less suitable when usage quotas must be enforced by the billing system itself.

Its free entry tier makes it possible to start without a monthly charge, while paid tiers trade monthly fees for lower transaction rates and stronger support. The key decision is whether those fee savings and operational features justify the added commitment.

Key features

Polar collects usage events, aggregates them into customer meters and adds metered-price line items to the next invoice. Meters can count, sum, average, find minimums or maximums, and track unique values. Ingestion approaches cover LLM usage, streaming responses, S3-compatible storage, elapsed time and manual event submission; LLM support includes the Vercel AI SDK and compatible models that return usage data. That breadth can accommodate different consumption models, but metering is for billing rather than access control: when a customer crosses a quota, Polar does not block further use, so the product must enforce limits 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 with sales tax included. Automated benefits can deliver usage credits, software license keys, file downloads up to 10GB, private GitHub repository invitations, and Discord invitations and roles. These options make Polar more compelling for products that sell access or digital goods as well as usage, rather than teams seeking metering alone.

Polar lists iOS and Android apps and plugins for Raycast and Framer. Stripe processes payments; 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. Support rises from standard on Starter to prioritized on Pro and Growth, then P1 support and a shared Slack channel on Scale.

Pricing

Starter is free, with a 5% + 50¢ transaction fee, all features to sell and standard support. It is the sensible starting point for a new or lower-volume product: there is no monthly charge, but its transaction rate is the highest of the four tiers.

Pro costs $20/month and charges 3.80% + 40¢ per transaction. It adds preview access to new features and prioritized support. Growth costs $100/month, lowers the fee to 3.60% + 35¢, and retains those same listed support and preview benefits. Growth is best considered when transaction volume makes the lower rate worth its larger monthly commitment; the listed plan benefits otherwise do not distinguish it from Pro.

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. That makes it the clearest fit for teams that need higher-touch support or SSO, not simply a cheaper rate. Across paid plans, compare the monthly cost with the fee reduction at your expected transaction volume; Starter avoids the fixed charge, while each step up requires more volume or a specific support or account need to make sense.

Platforms

Polar supports Android, iOS, web and API access, and offers an extension. Its app and plugin ecosystem includes iOS and Android apps plus Raycast and Framer plugins. This spans customer-facing mobile and web access and developer integration, though the available facts do not establish feature parity across those surfaces.

Who it's for

Polar fits AI and software teams that need subscriptions alongside event-based billing, tax handling and digital delivery across markets. It is particularly relevant when a team wants merchant-of-record services and multiple ways to meter usage in one billing stack. A product that must automatically suspend or throttle customers at a quota should look elsewhere or plan to build that enforcement itself.

Pros and cons

• Pros: Multiple meter aggregations and ingestion strategies suit products with varied usage models.
• Pros: Merchant-of-record services cover payments, tax, fraud, refunds and chargebacks, while hosted checkout supports localized currencies.
• Pros: Digital benefits include credits, license keys, downloads up to 10GB, and GitHub and Discord invitations.
• Cons: Quota enforcement remains the product's responsibility, so billing meters alone cannot prevent overuse.
• Cons: Starter's 5% + 50¢ fee is higher than the paid tiers, while those tiers add recurring monthly costs.

Alternatives

For a wider set of merchant-of-record options, browse Merchant of Record Software.

• Coda is worth considering if shared-document limits are more relevant to your choice: its free plan allows unlimited personal docs, while shared docs are capped at 50 objects and 1,000 table rows.
• Tebex may suit game sellers who want unlimited packages on a free plan; its Starter fee is 5% for most games and 15% for FiveM.
• Aquadratic offers a free platform with a 7% transaction fee, no monthly fee and no per-transaction minimums, making that fee structure a point of comparison with Polar's free tier.
• Fungies is another free option, charging 5% + 50¢ per sale with no monthly, setup or per-seat charge and unlimited products, plans and assets.
• Breeze is another merchant-of-record option.
• Freemius may fit sellers who prefer transaction pricing without setup or monthly fees; its stated transaction rate is 3.8% + 50¢ plus gateway fees.
• Gumroad is an alternative with a 10% + $0.50 fee for direct sales and a separate Discover marketplace fee.
• Whop offers tailored pricing for high-volume businesses, with dedicated account management and country-specific, volume-based rates.

Verdict

Choose Polar if you sell software or AI services with metered usage and want subscriptions, international checkout, merchant-of-record handling and digital benefits in one stack. Its strongest case is the breadth of billing and selling functions paired with a free starting tier. Look elsewhere if automatic quota enforcement is essential, or if the paid monthly costs and transaction charges do not fit your sales volume.