The fillable PDF is the fastest estimate: open, type, save, send, with nothing installed and nothing to format. It works in Preview, Adobe Reader, Chrome and the iPhone Files app. The form has the scope field, a six-line table, the estimated total, the deposit rule and the valid-until date, in the same layout as the invoice so the accepted estimate can become the invoice without surprises.
Free, one page, US Letter. No email, no sign-up. If you estimate a single trade mostly, the trade estimate templates carry that trade's lines and terms.
Same layout in other formats: Word (.docx) · Excel / Sheets (.xlsx)
The layout: header, bill-to block, line table, totals, terms. Same in every format; the format changes how you fill it.
| Word | Excel / Sheets | ||
|---|---|---|---|
| Totals calculate | No | No | Yes |
| Edit the layout | Yes | No | Partly |
| Fill on a phone | Partly | Yes | Partly |
| Needs an account | No | No | Google or Excel |
| Sends as | Save as PDF | Download as PDF | |
| Best for | Custom look | Fastest, any device | Math and a log |
Avo keeps your clients and your usual line items, so the next invoice is three taps. Your first three documents are free, full-quality PDF, no watermark. Premium from $59.99/year if you invoice often.

Scan the code with your iPhone camera to open Avo in the App Store, or email yourself the link.
Yes, in the Files app or Safari: tap a field, type, then share or save a copy. For frequent estimates, an app that converts the estimate to an invoice saves retyping.
You are viewing the PDF in an email or browser preview that does not support forms. Download it and open it in Preview, Adobe Reader, Chrome or the Files app.
Yes: no email, no watermark, no sign-up. It is published by the makers of the Avo app and mentions the site in the footer only.
Yes. Most PDF readers let the client add a signature to the acceptance line and save; a reply email saying “accepted” is also fine as a record.