25thhr.ai · Modern Mountain Builders LLC
Last updated September 26, 2026
These terms cover 25thhr.ai ("25th Hr", "we", "us"), operated by Modern Mountain Builders LLC: the 25thhr iPhone app, the web apps at app.25thhr.ai and crew.25thhr.ai, and the text messages sent on behalf of contractors who use it. By using the service you agree to them.
25th Hr helps contractors run jobs, crews, leads and paperwork. Contractors are responsible for the information they enter, for the work they perform for their own clients, and for having the right to contact the people they add. We provide the software; we are not a party to any agreement between a contractor and their client.
Keep your login private and tell us if you think it has been used without permission. Paid plans renew until you cancel under Account → Billing; cancellation takes effect at the end of the current period. We may suspend accounts used for spam, fraud, or anything unlawful.
Contractors who use 25th Hr can turn on lead intake and a missed-call answering service. When you call a participating contractor and they can't answer, or you text their business number, you may receive text messages from that business, sent through 25th Hr, about your request: an automated reply, follow-up questions about the job (such as your name, address, the work needed and a good time to reach you), booking details, and messages from the contractor. Calling or texting the business is how you request these messages.
We don't sell or share your phone number or messaging consent with anyone for marketing. See the privacy policy for how message data is handled.
Don't use 25th Hr to send spam or unsolicited marketing, to contact people who have opted out, or to break the law. Contractors must honor opt-outs; the service enforces STOP automatically.
The service is provided as is. To the extent the law allows, Modern Mountain Builders LLC isn't liable for indirect or consequential losses, and our total liability is limited to what you paid us in the twelve months before the claim.
If these terms change in a way that matters, we'll update the date at the top and note it in the app.
Modern Mountain Builders LLC (doing business as 25th Hr) · Robert Booth · Andrews, NC · rob@25thhr.ai