Help

Support

Email support@kontain.net. We aim to reply within one business day.

Trial and plans

How long is the free trial?
14 days from the day you create your account. You can use the full product during the trial.

What happens after the trial?
Choose Starter (€19/month) or Pro (€39/month) to keep working. You can still export your data. See Pricing.

What is the difference between Starter and Pro?
Both include clients, invoices, public links, PDF, export, and the rest of the product. Starter includes up to 25 active clients and 100 invoices per year. Pro includes unlimited active clients and unlimited invoices.

Annual billing?
Yes. Starter is €169 per year, Pro is €349 per year — about 26% less than paying monthly.

Using Kontain

What is Kontain?
A web CRM (Customer Relationship Management) for independent professionals: clients, invoices, public invoice links, PDF with your logo, light AI helpers for wording and notes, and account tools.

What do the AI helpers do?
On an invoice you can use Improve wording to clarify the description. On a client you can use Summarize notes to shorten long private notes. Both are optional: nothing is saved until you click Save, and you can edit the text first.

Where do I put my business logo?
Account → Business → Logo on invoices. It appears on invoice PDFs and on the public invoice page.

Can I try Kontain without signing up?
Yes. Use Try the live demo on the homepage. You enter a read-only demo account — no password, and changes are not saved. For your own data, start a free trial.

How do I share an invoice with a client?
Open the invoice and use the public link. Clients can view it (and comment) without a Kontain account.

Can clients pay my invoices by card?
Yes. Connect Stripe under Account → Client payments, mark the invoice as sent, and share the public link. Your client pays by card on that page. Payouts go to the Stripe account you connect.

Why does the PDF say SENT and not Overdue?
The public invoice page shows Overdue when a sent invoice is past its due date. The PDF still shows the stored status (for example sent) plus the due date.

Where do bank details and thank-you text go?
Account → Preferences → Invoice PDF (closing message, payment details, Kontain credit line).

Can I export my data?
Yes — Account → Export & backup. Download a ZIP of your clients and invoices.

Languages?
The product interface is English.

Account and security

How do I change my password?
Account → Password.

Two-factor authentication?
Account → Security. Optional app codes (for example Proton Authenticator).

I cannot log in
If you know your password, try again or use two-factor authentication if you enabled it. If you forgot your password, email support (see Support above) with the address on the account. Logged-in users can change their password under Account → Password.

Contact

Use the support email above. Put Help, Billing, or Feature idea in the subject line so we can handle your message faster.