AI-powered documents, spreadsheets, slides and PDFs.
On your machine, with the model you choose. Every change lands in the real file — nothing else moves.
macOS 14 or later · Apple Silicon · Windows 10 or 11
Three animated scenarios. In a spreadsheet, a portfolio is ranked by risk-adjusted return and one position is flagged as over its limit. In a document, a market section is written from an attached model, a scanned sector note and a web page, and a phrase is highlighted and replaced in the page itself. In a presentation, a workbook, a commentary document and last quarter's deck are read, and a board deck is built on that deck's own master.
The four editors
It edits the file.
Ask for a change and it happens in the file you already have open. No copying into a chat window, no fixing the numbering afterwards.
.docx · .xlsx · .pptx · .pdf — the files you already have, opened and saved in place
“Add a market section after the summary.”
The headings below renumber themselves. That numbering is the file’s own — Bower never rebuilt it.
“Variance by cost centre, and flag anything over 10%.”
It writes the formula, waits for the recalculation, then reads the answer back — so the divide-by-zero is caught before it says it’s done.
privacy mode · onColumn names and types left this machine. No cell values did.
“Draft the Series A deck on our template.”
On the template already in the file. Every chart declares which cells it read, and any page it made worse goes back.
Where we are
Revenue by region
Use of funds
Use of funds, by function and by quarter, with the hiring plan, attrition assumptions and a note on contractor spend
“Pull the fee table out of these fund factsheets.”
No text layer, so on-device OCR reads it first. That part never leaves the Mac.
COPY
The app
Portfolio analysis. Inventory. Budgets. Board packs.
No list of supported tasks. If the work lives in a document, a sheet, a deck or a PDF, it is in scope.
Real screens, from the build on this page. Click one to open it full size.
A model, five sheets deep. CAC, payback, LTV and the ratio are the file's own formulas, recalculated by the app. The greens and reds are the workbook's own conditional formatting, rendered.
Ask on the sentence itself. Select a line and the request happens where you are reading — sharper, shorter, expanded. “Changes are marked for review.”
Two other files in one question. A workbook and a scanned rate card, kept for the conversation. The question spans all three; the answer lands in the one you have open.
Skills, so you stop repeating yourself. Type / and pick one. Standing instructions you wrote once, not again.
Somebody else's redlines, intact. Priya's deletion and insertion are real tracked revisions; Marcus's comment still anchors to its phrase. Both were there before Bower opened the file.
Connections
Your numbers live in six places.
The model shouldn't.
Ask once. It reads what you have already connected and builds the sheet — every figure pointing back at where it came from.
Skills you write once
“Normalise for one-offs first, then these eight ratios, sources in column F.” Say it once.
---
name: statement-analysis
description: normalise for one-offs, then the eight ratios
apps: [sheets]
---
Type / to pick one. Sheets today; the other three can write one but not yet load it.
One switch each
Bower decides only which of them the assistant may call.
A production database should stay dark until you want it.
Why this exists
The complaint is always the same.
Not about the writing. About what the tool did to the file on its way through.
“Prompts like reformat this document lead to de novo generation… which causes duplication, misplacement, or total overwrites.”
Renumbering after an AI edit is “the bane of my existence, and probably the biggest time-suck in my job.”
Something break for you? We would rather read that than a five-star review.
Done. In the file.
AI-powered documents, spreadsheets, slides and PDFs.
.dmg · macOS 14 or later · Apple Silicon · .exe · Windows 10 or 11
- What it costs
- Nothing for at least a year from the day you install it — everything, no limits. It will need a licence eventually, and the first 100 people to sign up keep it free for life. Bower has no inference bill of its own either: it runs on your own API key from any of nine providers, or on a model running on your own machine through any OpenAI-compatible endpoint. There is nothing for us to mark up.
- Where your files go
- Nowhere. They open, change and save on this machine. Only what you ask about is sent, to the provider you picked, and scanned PDFs are read on-device.
- What installing takes
- One download, then one right-click the first time you open it — the build isn't signed yet, so macOS asks. One download, then two prompts the first time. The browser flags it as uncommon: choose Keep. Then Windows asks: More info, then Run anyway. The build isn't signed yet, so both are expected.
- Why not the Claude add-ins
- If you have Microsoft 365 and live in Word, Excel and PowerPoint, use them — they are good. Bower is the editor itself, so there is no Office licence and no add-in. It reads files sitting on your disk, not only the one you have open. It opens PDFs. And it runs on whichever model you point it at, including one on this machine.