Last updated: June 2026
Please read these Terms carefully before buying or using Estimark. By purchasing, installing, or using Estimark, you agree to these Terms. If you do not agree, please do not use the app.
Plain-language summary (not a substitute for the full terms): Estimark is a tool that helps you build job quotes and invoices. You buy a license to use it. Your customer and quote data stays on your own device — we don't store it for you, so keep your own backups. The optional AI features give you estimates and concept images only — always double-check them before you quote a real customer. The app is provided "as is," and there are limits on what we're responsible for. The full terms below spell all of this out.
Estimark ("Estimark," "the app," "we," "us," or "our") is software created and sold by a sole proprietor ("the Developer"). You can reach us at estimark.support@gmail.com.
"You" or "your" means the person or business that buys or uses the app.
Estimark is a Progressive Web App (PWA) that you install to your device from a web address ("Add to Home Screen"). It helps independent tradespeople — such as handymen, plumbers, electricians, landscapers, and painters — create professional job quotes, estimates, and invoices, including materials and labor, PDFs, printing, SMS sharing, and your own logo and branding.
When you buy Estimark, we grant you a personal, non-exclusive, non-transferable, revocable license to use the app for your own personal and business purposes, including creating quotes and invoices for your customers.
You may:
You may not:
We own all rights to the Estimark app, its name, its design, and its code. This license does not transfer ownership of the app to you — you are buying the right to use it.
Payments and licensing are handled by LemonSqueezy, our third-party payment processor and merchant of record. When you buy Estimark, LemonSqueezy processes your payment and issues your license key under their own terms and privacy policy. We do not see or store your full payment card details.
The Basic tier is sold as a one-time purchase. It includes the core features: the quote builder, materials and labor, PDF/print/SMS sharing, and logo and branding. Once you buy it, you own a license to use those Basic features under these Terms.
We plan to offer a Pro tier in the future as a paid subscription. Pro is expected to include the AI-powered features (such as the photo material estimator, job assistant, tutorial finder, and Vision Studio).
Refunds, where offered, are handled through LemonSqueezy and are subject to their refund policy and any refund terms shown at checkout. If you have a problem, contact us at estimark.support@gmail.com and we'll try to help.
Some optional "Pro" features use artificial intelligence. Today, these features work using your own API keys that you obtain from the AI providers and enter into the app. These features include:
When you use these features, the relevant text and photos are sent to third-party AI providers — Anthropic (Claude), OpenAI, and Google (YouTube Data API) — using your own keys. Those providers process your data under their own terms and privacy policies, not ours. You are responsible for:
This is important. Anything the AI features produce is an estimate, suggestion, or illustration only — not professional advice and not a guaranteed result. This includes:
AI can be wrong, incomplete, or out of date. Before you send any quote, estimate, or invoice to a customer, you must independently review and verify the numbers, materials, measurements, and prices yourself. You are solely responsible for every quote, price, and commitment you give your customers. Do not rely on AI outputs as your only source of truth, and do not present concept images to a customer as a guaranteed outcome.
You agree to use Estimark honestly, lawfully, and only for legitimate business purposes. You agree not to:
You are responsible for making sure your quotes, invoices, pricing, and business practices comply with the laws and licensing rules that apply to your trade in your area.
Estimark stores your data locally on your own device, in your browser's storage (localStorage). This means:
You are responsible for your own backups. Please regularly export or save copies of any quotes, invoices, and customer information that matter to you. We are not responsible for any lost or corrupted data.
The only data that leaves your device is (a) what you deliberately send using the AI features (to the AI providers, using your own keys), and (b) what you send when you share a quote or invoice yourself (for example, by SMS, print, or PDF). Payment and license information is handled by LemonSqueezy as described above.
Estimark relies on and connects to services run by other companies, including:
We don't control these services and aren't responsible for them. Their availability, pricing, terms, and privacy practices are their own. If one of these services changes, raises prices, limits access, or shuts down, some Estimark features may stop working, change, or become unavailable, and that is outside our control. Your use of each third-party service is governed by that company's own terms and privacy policy.
Estimark is provided "as is" and "as available," with all faults and without any warranty of any kind, to the fullest extent allowed by law. We do not promise that:
To the fullest extent permitted by law, we disclaim all warranties, whether express, implied, or statutory, including any implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement. You use Estimark at your own risk.
Some places do not allow certain warranty exclusions, so some of the above may not apply to you. In that case, any legally required warranties are limited to the shortest period and narrowest scope the law allows.
To the fullest extent permitted by law:
You agree that the quotes, prices, materials, and commitments you give your customers are your professional responsibility, not ours.
Some places do not allow certain limitations of liability, so some of the above may not apply to you. In that case, our liability is limited to the smallest amount the law allows.
You agree to defend, indemnify, and hold harmless the Developer from any claims, losses, damages, liabilities, and costs (including reasonable legal fees) that arise from your use of Estimark, the quotes or invoices you create, your violation of these Terms, your violation of any law, or your infringement of anyone else's rights.
This license lasts until it is terminated.
If your license ends, you must stop using the app and delete it. Sections that by their nature should survive termination — including ownership, disclaimers, limitation of liability, indemnification, and governing law — will continue to apply. Terminating your license does not automatically entitle you to a refund except as required by law or LemonSqueezy's policies.
We may update these Terms from time to time — for example, when we add features (like the Pro tier) or when laws change. When we do, we'll update the "Last updated" date at the top. If the changes are significant, we'll try to give reasonable notice through the app or by other reasonable means. If you keep using Estimark after the changes take effect, that means you accept the updated Terms. If you don't agree, please stop using the app.
We may add, change, or remove features at any time, including features that depend on third-party services. We are not obligated to keep any particular feature available, though we'll aim to avoid removing core Basic features you paid for without a reasonable alternative.
These Terms are governed by the laws of Massachusetts, USA, without regard to its conflict-of-laws rules. You agree that any dispute relating to Estimark or these Terms will be handled in the courts located in Massachusetts, USA, unless the law where you live gives you the right to bring it somewhere else.
Questions about these Terms? Get in touch:
Estimark Email: estimark.support@gmail.com
Please note: This document is a plain-language template to help you get started. It is not legal advice. Laws about software licenses, consumer rights, warranties, liability, and privacy differ from place to place. Before you publish these Terms, please have a qualified lawyer in Massachusetts, USA review and adapt them for your specific business.