Pricing
Start for free. Premium (lifetime $19.99 / monthly $3.49 / yearly $27.99) unlocks larger charts, premium themes, watermark-free export, PDF/SVG export, and higher AI limits.
Free
$0
- Create and edit charts with up to 8 people
- Auto-arrange and grid placement
- Standard theme
- HD PNG export (with watermark)
- URL sharing and social sharing
- AI chart draft from text, once per day
- Local browser autosave
- No sign-up required
Premium — included in every plan below
- Create charts with 9+ people
- Premium design themes
- Watermark-free export
- PDF / SVG / social-size export
- AI character image generation, 5 times per day
- AI chart generation, raised to 10 times per day
Charged in USD for international customers, JPY for customers in Japan — Checkout shows your local currency automatically.
Recommended
Lifetime
$19.99
/ one-time
One-time payment. Yours forever. No subscription.
Monthly
$3.49
/ month
Just want to try a month? Cancel anytime.
Yearly
$27.99
/ year
$2.33/mo — save $13.89 vs monthly.
- Cancel monthly / yearly anytime with one click
- Full access from day one — no proration
- Secure payment by Stripe — we never store your card details
Can I cancel anytime?
Yes. Monthly and yearly plans can be canceled anytime with one click from the Stripe billing portal. After canceling, Premium stays active until the end of the paid period. The lifetime plan never needs canceling.
What makes Lifetime different?
One payment ($19.99) gives you the same Premium features as the subscriptions — forever. No auto-renewal, nothing to cancel. It costs about four months of the monthly plan, so it pays off if you use Premium for four months or more.
What payment methods are accepted?
Payments are processed by Stripe and accept major credit and debit cards (Visa, Mastercard, American Express, JCB, and more). Checkout shows your local currency; we never store your card details.
See the difference: Free vs Premium
Feature comparison
| Feature | Free | Premium |
|---|---|---|
| Create and edit relationship charts | Yes | Yes |
| People limit | Up to 8 | No fixed limit |
| Auto-arrange and grid placement | Yes | Yes |
| URL sharing and social sharing | Yes | Yes |
| AI chart generation from text | 1/day | 10/day |
| PNG quality | HD | HD |
| Premium themes | No | Yes |
| Line color and style customization | 10 preset colors (solid only) | Yes (custom color + dashed/dotted) |
| PDF / SVG / social-size export | No | Yes |
| AI character image generation | No | 5/day |
| Saved-image watermark | Included | Removed |
FAQ
Is this a subscription?
Monthly ($3.49) and yearly ($27.99) plans are subscriptions that renew automatically until canceled. The lifetime plan ($19.99) is a single one-time payment — it never renews.
Do I need to create an account?
No. Both Free and Premium can be used without creating an account.
How is Premium activated?
After completing Stripe Checkout, Premium is activated in the same browser automatically. If you want to use Premium in another browser or device, open the completion redirect URL there.
Can I cancel anytime?
Yes. After cancellation, Premium features remain available until the end of the paid subscription period.
Can I get a refund?
Because this is a digital subscription, paid periods are generally non-refundable. If you see duplicate billing or a service-side issue, contact contact@soukanzu.jp.
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