llmcost
$19 one-time license
A Python command-line tool that reports what each feature and user of your AI app costs, with budget alerts and usage capture from OpenAI and Anthropic.
Buy llmcostAmes, Iowa
Software that earns its keep.
Riecken Labs, the public face of Dana Riecken Software, builds licensed tools for developers and small businesses. Buy a product below and a license key is emailed to you after checkout.
Products
Simple licenses. Checkout is handled by Lemon Squeezy.
exit-survey
$49 one-time license
A self-hosted “why are you leaving?” survey widget for SaaS cancel flows, with answers stored on your own machine.
Buy exit-survey
invoice-nudge
$19 a month
Automatic overdue-invoice reminders for trades businesses, with CSV import and a 3, 7, and 14-day email or text schedule.
Buy invoice-nudge
Policies
Terms
Dana Riecken Software (Riecken Labs) sells software licenses for the products listed on this site. llmcost and exit-survey are one-time licenses. invoice-nudge is a monthly subscription you can cancel at any time.
Lemon Squeezy is the merchant of record. It processes payments, collects applicable taxes, and issues purchase receipts. After a successful purchase, we email a license key to the address used at checkout. A key may be used on up to three machines.
The software is provided as-is. We do not promise that it will be error-free or fit every purpose. You are responsible for how you use it, including any data you import or send through it.
Privacy
This website does not use analytics, advertising, or other tracking. We do not set marketing cookies.
When you buy a product, Lemon Squeezy processes your payment details and shares with us the information we need to fulfill the order, such as your name, email address, and what you purchased. We use that information to issue and support your license, and to reply if you contact us.
License emails are sent from keys@rieckenlabs.com. We do not sell your personal information. To ask a question about your data, write to driecken@gmail.com.
Refunds
If a product does not work as described, email driecken@gmail.com within 14 days of purchase and we will help or refund you.
For invoice-nudge, you can cancel the subscription at any time to stop future charges. Refunds for a current billing period are considered case by case if you write to us within 14 days of the charge.
Because Lemon Squeezy is the merchant of record, refunds are processed through Lemon Squeezy and appear on your original payment method.
Contact and support
Questions about a license, a purchase, or one of the products? Email Dana at driecken@gmail.com. We aim to reply within two business days.