Simple, honest pricing
Start free — no credit card, no signup needed. Upgrade when you need more.
Free
$0
Forever free · No credit card
- ✓All 5 calculators — always free
- ✓3 calculations per day
- ✓Real-time results
- ✓No account required
- ✓Mobile friendly
MOST POPULAR
Pro
$15/month
Cancel anytime · Instant access
- ✓Unlimited calculations — no daily limit
- ✓Save calculation history
- ✓Export to CSV & JSON
- ✓Dashboard with usage stats
- ✓Priority email support
- ✓New calculator features first
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Secure Payment
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Cancel Anytime
No contracts, no lock-in. Cancel in one click.
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Instant Access
Your account upgrades immediately after payment.
Common questions
Can I cancel at any time?+
Yes. Cancel any time from your dashboard billing settings. You keep Pro access until the end of your billing period.
What payment methods do you accept?+
All major credit and debit cards via Stripe. Secure, encrypted, no card data stored on our servers.
Is the free plan really unlimited?+
Free plan allows 3 calculations per day (resets at midnight UTC). No account required to use the calculators.
Secure payment via Stripe. All prices in USD. Questions? Contact us.