Stop paying a monthly app just to see your own fees.
A one-time, offline course platform fee calculator for Udemy, Teachable, Kajabi & Gumroad. No subscription. No signup. No data ever leaves your device.
One-time download · works with no internet · nothing tracked
- ✗ Asks for your email to show results
- ✗ Runs on their server — your numbers leave your device
- ✗ Ads, popups, and upsells
- ✗ Needs an internet connection
Your fees are your business — literally
Nearly every "free" course fee calculator is an online tool: it runs on someone else's server, often hides the result behind an email signup, and surrounds it with ads. Your prices and revenue are sensitive business data. This calculator flips the model — it's a single file you download once and run entirely on your own device, with zero external requests and no subscription to keep paying.
Recurring cost. It's a one-time tool — no monthly SaaS, no renewal, no account.
External requests on load. Fonts and charts are built in; nothing is sent anywhere.
Of your data stays on your device, in your browser — no cloud, no tracking, no analytics.
A full fee calculator that respects your privacy
Private by design — offline, no account
Open one HTML file and everything runs locally. Your course prices, sales numbers, and portfolio are saved only in your own browser. No email wall, no login, no server, no subscription — and it keeps working even with no internet connection.
All 4 platforms
Udemy (37%-97% revenue share), Teachable, Kajabi, and Gumroad — compared net of fees on equal footing.
Local portfolio + CSV
Track every course in one table, saved on your device, with CSV import and export you control.
Break-even & planner
Plan break-even charts and a 12-month income planner with a quarterly tax-reserve schedule.
Three steps. No login. No internet needed.
Download once
Get the single HTML file — no installer, no account, no email.
Open the file
Double-click to open in any browser. It runs fully offline, forever.
Calculate privately
Enter your numbers and compare platforms. Everything stays on your device.
Course Creator Take-Home Calculator
See exactly what you keep per sale and per month — and which platforms charge no monthly subscription at all. Udemy and Gumroad take only a cut per sale, while Teachable and Kajabi add a fixed monthly fee. Everything runs in your browser; nothing is sent anywhere.
Udemy traffic mix (advanced) — must total 100%
Assumes Teachable Builder & Kajabi Starter, Gumroad direct sales. The full tool lets you compare every plan & payment method.
This free version compares take-home across 4 platforms. The full Course Creator Calculator adds US tax (self-employment + brackets), multi-course portfolio, annual planner, every plan & break-even, Udemy Business royalties, and charts. One-time payment, 100% offline.
Get the full Course Creator CalculatorFree, offline, no subscription — answered
Yes — this is a one-time download with no subscription and no recurring cost. Open a single HTML file and it works forever, offline, with no account.
Completely. After you open it once, it needs no internet. Fonts and charts are built in, so the page makes zero external requests — nothing is sent to any server.
No signup, no login, no email. Many free online calculators gate results behind an email or run on their server — this one does not.
Only on your device, in your browser's local storage. Your prices, sales, and saved courses never leave your computer. No cloud, no tracking, no analytics.
Udemy (including its 37%-97% traffic-source revenue share), Teachable, Kajabi, and Gumroad — with current 2026 fee structures for an equal comparison.
Offline keeps your business numbers private, works with no internet, and has no subscription to keep paying — plus no ads, popups, or email walls in front of your results.
It's a one-time tool you download and keep — no subscription, no account, no data collection. Just open the file and use it.
Udemy and Gumroad charge nothing per month — they only take a cut of each sale. Teachable Builder ($89/month) and Kajabi Starter ($149/month) add a fixed subscription, which the calculator subtracts on the Monthly net line. That is why a platform with a great per-sale rate can still finish behind a no-fee one at low volume.
On a $97 course, Gumroad direct leaves about $83.69 and Udemy about $69.65 at the default blended mix — both with no monthly cost to recover. Among the no-subscription options, Gumroad's flat 10% + $0.50 usually keeps more per sale than Udemy's revenue share unless you drive most of your own Udemy traffic.
Yes, once your volume is high enough. Teachable Builder takes almost nothing per sale, so its Monthly net climbs faster than Gumroad's as sales rise. Increase 'Sales per Month' and you will see the point where the $89 subscription is fully absorbed and Teachable overtakes the no-fee platforms.
Kajabi Starter's $149 monthly fee is deducted no matter how little you sell, so a single $97 sale shows $93.89 - $149 = -$55.11. Gumroad has no fixed fee, so its Monthly net can shrink but never drops below zero. The calculator shows negatives in red on purpose, so the subscription risk is visible.
More privacy-first tools from Smart Local Tools
Start with the full calculator, or explore the rest of the offline, no-subscription toolkit.
Calculate your course fees — privately, and for keeps
One file. No subscription, no signup, no data leaving your device. Compare Udemy, Teachable, Kajabi and Gumroad offline.