Polar vs SendOwl
We give Polar a 2.6 GPA and SendOwl a 2.4, out of 4.0. Polar grades higher on the free plan. SendOwl grades higher on features. They get the same grade on value for money, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Polar
Open-source billing and merchant of record for software sellers
SendOwl
Checkout and delivery for downloads, licenses and subscriptions
How we grade them
| 2.6GPAPolarGood | 2.4GPASendOwlFair | |
|---|---|---|
| Value for money | CStarter is free and keeps 5% + 50¢ a transaction, so $1,000 costs $50 plus 50¢ a sale, with no separate card fee listed since Polar is the merchant of record. Pro at $20 only pays off above about $1,379 a month. Non-US cards add 1.5%. | CLaunch stops at $10k of sales a year, less than a year of $1,000 a month, so it's Grow at $72.50 a month billed yearly, with no cut: $72.50. That's close to this category's dearest tenth. Stripe or PayPal fees come on top and aren't counted. |
| Free plan and trial | AStarter costs nothing a month and includes every selling feature, with standard support. You pay 5% + 50¢ a sale instead, and the value grade counts that. | CNo free plan. There's a free trial with every feature but a limit on orders until support lifts it; the listing gives no length and doesn't say it needs a card. |
| Features | CSubscriptions, seats, usage meters and credits, plus files, license keys, GitHub repo invites and Discord roles delivered automatically. It does billing for software fully, but nothing in the listing covers a store page, email or affiliates. | BDownloads, subscriptions, drip courses, license keys, streaming, PDF stamping and locking, upsells, cart recovery, affiliates and tax calculation, all on every plan. Nothing in the listing shows a gap in the job. |
| Ease of use | CNo App Store rating on record. It's built for developers: the listing leads with an API, a Python SDK and webhooks, so expect some setting up. | CNo App Store rating on record. It's built to plug into your own site or Shopify, so there are carts, checkout templates and payment accounts to wire up first. |
| Platforms and integrations | BWeb, with Stripe, GitHub, Discord and Slack, an API, a Python SDK and an MCP server for Claude, Cursor and ChatGPT. No phone or desktop app is listed. | BWeb, with Stripe, PayPal, Shopify, Square, Zapier, Mailchimp, Kit and WordPress, plus webhooks and an API. No phone or desktop app is listed. |
| Best for | developers selling software and usage plans | adding digital delivery to a site you already run |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Polar and SendOwl. How we grade
Price against what you get
Polar starts at $20 a month and scores 2.3 out of 4 on features, ease of use and platforms. SendOwl starts at $0.83 a month when paid by the year and scores 2.7.
SendOwl scores higher and starts $19.17 a month lower. Of the other tools for selling digital products on the chart, 6 score higher than Polar for less, and 2 score higher than SendOwl for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Polar starts at $20 per month, with a lower fee on each sale. SendOwl starts at $32.50 per month for up to $10k sales a year, billed annually ($39 monthly).
- Polar has a free plan. SendOwl does not, though it has a free trial.
- Polar is open source, according to its own site.
- Polar also covers merchant of record.
- SendOwl also covers affiliate tracking and online store.
At a glance
| Polar | SendOwl | |
|---|---|---|
| Pricing | Free plan | Free trial |
| Starts at | $20 per month, with a lower fee on each sale | $32.50 per month for up to $10k sales a year, billed annually ($39 monthly) |
| Free plan | Starter is free with all selling features and standard support; Polar takes 5% + 50¢ of each transaction, plus 1.5% for non-US cards. | None |
| Free trial | None listed | Free trial with all features but limits on orders until support lifts them; length not stated |
| Web | ||
| Made by | Polar Software, Inc. | SendOwl |
| Price read from | polar.sh | sendowl.com |
| Checked | Oct 18, 2026 | Oct 18, 2026 |
Who each one suits
Polar
- Developers selling software, licenses or SaaS subscriptions worldwide
- AI products that bill by tokens, credits or other usage
- Open-source maintainers granting paid access to repos or Discord
SendOwl
- Sellers adding digital delivery to a site or Shopify store
- Software sellers who need license keys issued at checkout
- Creators who want every feature without a cut of each sale
Worth knowing
Polar
- Starter keeps 5% + 50¢ of each transaction, and non-US cards add 1.5%; the paid plans only lower that fee once sales are high enough.
- Each dispute costs $15 whatever the outcome, and Polar may suspend accounts whose chargeback rate gets too high.
- Payouts through Stripe cost $2 a month plus 0.25% + $0.25 per payout, and currency conversion adds 0.25% to 1%.
- Organizations created before May 27, 2026 keep an Early Member rate of 4% + 40¢ until they move to a paid plan.
SendOwl
- No free plan; plans are capped by orders and sales over the trailing 12 months, and going over moves you up a tier.
- Downloads past the monthly bandwidth allowance cost $1 per GB; the pricing page gives two different allowances for Launch and Grow.
- Stripe or PayPal processing fees come on top, and SendOwl acts as a technology provider rather than the merchant of record.
- Business plans, from $299 a month, are needed once yearly sales pass $100,000.
Key features
Polar
- Merchant of record
- Polar resells your product in over 100 markets and is responsible for payments, sales tax and VAT, fraud, refunds and chargebacks.
- Subscriptions and usage billing
- Subscriptions, seat-based and unit-based pricing, prepaid credits and metered usage from live event meters, combined on one invoice.
- Automated benefits
- Deliver file downloads up to 10GB each, license keys, private GitHub repository invites, Discord roles, feature flags or a shared Slack channel.
- Cost and margin insights
- Attach inference or other costs to usage events to see gross margin per customer beside revenue.
- Checkout options
- Custom checkout fields, discounts, free trials and tax-inclusive pricing, with a Python SDK, webhooks and an API for developers.
- Open source and MCP
- Polar's code is open source, and its MCP server lets Claude, Cursor or ChatGPT query customers and revenue or create products and refunds.
SendOwl
- Checkout anywhere
- Payment links, an embeddable cart, a modal checkout, three checkout templates and custom fields, with custom CSS and JavaScript.
- Many digital product types
- Downloads, subscriptions, bundles, courses with drip content, software with license keys, streaming audio and video, pre-orders and tip jars.
- File protection
- PDF stamping with the buyer's details, PDF and Office document locking, download and time limits, and fraud filters.
- Sales tools on every plan
- Upsells and cross-sells, cart abandonment emails, an affiliate program, coupons, pay-what-you-want pricing and gifting.
- Integrations and API
- Stripe and PayPal, with Apple Pay and Klarna through Stripe; Shopify, WordPress, Notion and Linktree; Zapier, webhooks and an API.
- Tax and reporting
- Automatic sales tax and EU VAT calculation, tax reports by country, and reports on income, subscriptions, upsells and affiliates.
Plans
Polar
Starter$0
All features to sell, standard support. Polar keeps 5% + 50¢ of each transaction, plus 1.5% for international cards.
Pro$20
per month
Fee drops to 3.8% + 40¢ a transaction, with prioritized support and preview access to new features. Pays off above about $1,379 a month in sales.
Growth$100
per month
Fee drops to 3.6% + 35¢ a transaction, with prioritized support. Pays off above about $5,634 a month in sales.
Scale$400
per month
Fee drops to 3.4% + 30¢ a transaction, with a shared Slack channel, P1 support and single sign-on.
SendOwl
Launch$32.50
per month for up to $10k sales a year, billed annually ($39 monthly)
Up to 5,000 orders a year, unlimited products and storage, and every feature. 10 GB of download bandwidth a month on the plan card (20 GB in the FAQ).
Grow$72.50
per month for up to $36k sales a year, billed annually ($87 monthly)
Up to 25,000 orders a year, with every feature. 20 GB of bandwidth a month on the plan card (30 GB in the FAQ).
Scale$132.50
per month for up to $100k sales a year, billed annually ($159 monthly)
Up to 50,000 orders a year and 50 GB of download bandwidth a month, with every feature.
Business$299
per month and up, for up to $200k in sales a year
Business plans for higher volumes, up to $5M+ in yearly revenue, with priority support.
Ways to pay less
Polar
- Startups
Scale plan free for a year for AI startups
Polar's Startup Program gives early-stage AI startups the Scale plan free for twelve months, with its 3.4% + 30¢ fee, by application.
SendOwl
- Annual discount
Two months free with yearly billing
SendOwl's pricing page gives two months free on yearly billing: Launch $32.50 a month instead of $39, Grow $72.50 instead of $87, Scale $132.50 instead of $159.
