Polar

Polar is a billing stack for AI products that combines usage charges, subscriptions, credits, invoicing, and merchant-of-record services. It collects usage events, groups them into customer meters, and adds metered-price items to the next invoice. Meters can count, sum, average, identify minimums and maximums, or track unique values. Usage collection options cover LLM activity, streaming responses, S3-compatible storage, elapsed time, and manually submitted events. As a 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, files up to 10GB, private GitHub invitations, and Discord invitations or roles. Starter is free; Pro costs $20/month, with transaction fees, and higher-priced Growth and Scale plans are also listed. Polar says meters do not prevent use after a quota is crossed, leaving enforcement to the product using the service. It lists iOS and Android apps and Raycast and Framer plugins. Stripe processes payments, and Polar says it does not store full card numbers or sensitive payment credentials.

Polar combines billing tools with checkout and merchant-of-record services for AI products. Its meters track usage but do not enforce quotas, and its plans include transaction fees.

Polar may suit teams building AI products that need usage billing, subscriptions, checkout, or merchant-of-record services. Its meters do not enforce quotas, so usage control must be handled by the product using Polar.

Polar combines subscription billing, metered charges and digital delivery for teams selling AI products or software. It is best suited to makers who want merchant-of-record payment and tax handling alongside usage-based billing. Its broad set of selling tools is appealing, but usage meters will not enforce customer quotas.

Overview

Polar brings subscriptions, credits, invoicing and merchant-of-record services into one billing stack. That breadth can reduce the need to assemble separate systems for recurring charges, consumption billing and digital delivery. The trade-off is that the monthly plan price is only part of the cost: each tier also charges a transaction fee.

Key features

Polar ingests 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 strategies 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, giving teams several routes for billing consumption.

The central limitation is operational: meters do not block usage when a customer crosses a quota. The product using Polar must enforce its own limits, so teams that need billing and access control to work as one system will 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 with sales tax included. Automated benefits include usage credits, software license keys, file downloads up to 10GB, private GitHub repository invitations, and Discord invitations and roles. These tools suit products that sell access or digital goods as well as subscriptions.

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 starts at standard on Starter, is prioritized on Pro and Growth, and adds P1 support and a shared Slack channel on Scale.

Pricing

Polar is freemium, with paid plans from $20/mo. The free Starter plan costs nothing and charges 5% + 50¢ per transaction. It includes all features to sell and standard support, making it a practical starting point for a new product, though 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, with a 3.60% + 35¢ transaction fee and the same preview access and prioritized support. The progressively lower rates may suit teams whose sales volume makes the monthly charge worthwhile; the published plan terms do not state a seat allowance or usage quota.

Scale costs $400/month and charges 3.40% + 30¢ per transaction. It includes preview access, a shared Slack channel, P1 support and Single Sign-On, making it the tier for businesses that value those support and account features. The monthly commitment is substantial, so the lower transaction rate alone may not justify it at modest volume.

Platforms

Polar supports Android, iOS and web, as well as API and extension platforms. It also lists apps for iOS and Android and plugins for Raycast and Framer, giving teams both integration options and mobile apps.

Who it's for

Polar is a strong fit for AI and software makers who need metered billing, recurring subscriptions, hosted checkout and merchant-of-record services in one stack. Teams selling downloadable files, licenses or community access can also use its automated benefits. It is less suitable for products that need Polar itself to halt service when a usage allowance is reached, or for sellers whose transaction volume cannot support a paid plan.

Pros and cons

• Pros: Multiple meter types and ingestion strategies support varied consumption-based pricing.
• Pros: Merchant-of-record handling, localized checkout and digital benefits cover several parts of selling software in one system.
• Pros: The free Starter tier includes all features to sell, allowing a product to start without a monthly plan fee.
• Cons: Starter's 5% + 50¢ per-transaction fee is higher than the paid tiers, and those tiers add monthly costs.
• Cons: Meters do not enforce quotas, leaving access restrictions to the product team.
• Cons: Scale's $400/month price is a meaningful commitment for businesses that do not need its shared Slack channel, P1 support or Single Sign-On.

Alternatives

Coda is worth considering for personal or shared-document workflows: its free plan has no size or object limits for personal docs, while shared docs are limited to 50 objects and 1,000 table rows. Freemius may fit sellers who want transaction pricing without setup or monthly fees; its stated model is 3.8% + 50¢ per transaction plus gateway fees, with no extra fee for cart recovery or failed-payment recovery. Gumroad is another free-plan option, with direct sales priced at 10% + $0.50 per transaction through a profile or direct link.

Wayopay may suit sellers who prefer a per-sale platform fee with no monthly fees or setup costs and payment processing and VAT handling included. Whop offers tailored rates for high-volume businesses, with country-specific and volume-based pricing and a dedicated account manager. Creem has a pay-as-you-go plan at $3.94 per successful transaction, with no monthly or setup fees and no minimum volume. Dodo Payments offers a standard plan with no fixed fees and charges only when a transaction occurs. Breeze is another alternative to consider.

For a broader comparison, see Merchant of Record Software.

Verdict

Polar is a compelling choice for AI and software teams that want metered billing, subscriptions, checkout and merchant-of-record services together, especially if its digital benefits fit the product. The main reason to look elsewhere is the combination of transaction fees and the need to enforce usage limits outside Polar.