Terms of use
Effective date: 11 November 2026
This page describes how Invoice Nudge works and the terms for using it. It is written in plain language. It is not a lawyer-drafted contract.
The service
Invoice Nudge is a job list for people who bill for work. You can mark jobs as open, done, invoiced, and paid. After you mark a job done, the product is designed to send invoice reminders to your account email on day 0, +2, and +5, and to stop those reminders when you mark the job invoiced or paid. After you mark a job invoiced, the product is designed to send polite reminders to the client email you provide on +1, +3, and +7, and to include your pay link when you attach one.
The free try on the website is one in-browser demo cycle. It does not create an account.
Who operates it
Invoice Nudge is operated by Mark Zhao, who is in China. There is no separate company name listed here. The current public site is https://invoicenudge.dev. A preview site also exists at https://preview.invoicenudge.dev.
Price and billing
The paid plan is $9 USD per month, billed by Stripe. Tax is not charged today. You can cancel anytime. If you are signed in with a paid subscription, use Manage billing on the jobs page to open the Stripe customer portal, where you can cancel or update your card, then return to the app. Cancellation takes effect at the end of the current billing period. You can also email zhaoqingjie88@gmail.com.
Invoice Nudge does not see or store your card numbers. Stripe handles checkout and billing.
Your account
Access to the paid job list starts after Stripe checkout, through a signed session cookie named in_session. The cookie is HttpOnly, Secure, and SameSite=Lax, with Path=/ and a Max-Age of 30 days. If the cookie expires or you use a new device, you may request a sign-in link, complete checkout again, or contact us.
You are responsible for the information you enter, including client names, client emails, and pay links.
Emails to you
When you mark a job done, we send invoice reminders to your account email on day 0, +2, and +5, from reminders@invoicenudge.dev. Those reminders stop when you mark the job invoiced or paid. They are not sent if your subscription is not paid or if we do not have an account email for you.
Owner invoice reminder email is currently in test mode. Those reminders are sent only to a configured test inbox, not to every subscriber address. The job list still shows the reminder dates.
Emails to clients
We send reminders to the client addresses you provide, on +1, +3, and +7, from reminders@invoicenudge.dev, with Reply-To set to your email. Invoice Nudge never charges the client or holds their money. You are responsible for having permission to email your clients and for any pay link you attach.
Client chase email is currently in test mode. Those reminders are sent only to a configured test inbox, not to every client address. The job list still shows the chase dates.
Sign in
Existing subscribers can request a sign-in link instead of paying again. A sign-in link does not create a new account or a new subscription. The link expires in 20 minutes. Opening it does not sign you in until you confirm on the site. Access after you confirm still depends on an active, trialing, or past-due subscription, the same as the rest of the app.
When sign-in email is not on, a request does not send a message. Sign-in email, owner invoice reminders, and client chase emails are currently in test mode. They are sent only to a configured test inbox, not to every address that would otherwise receive them. The public reply to a sign-in request does not say whether an account exists.
Availability
The service is provided on a best-effort basis. There is no uptime guarantee or service level agreement.
Acceptable use
Use Invoice Nudge only for lawful work billing. Do not use it to send mail people did not agree to receive, or to misuse another person's data.
Children
The service is for people who bill for work. It is not directed at children.
Changes
We can change the service or these terms. Material changes will be posted here with a new date.
Problems
If something goes wrong, email zhaoqingjie88@gmail.com and we will try to resolve it.
Contact
Mark Zhao
Email: zhaoqingjie88@gmail.com
See also the Privacy Policy.