Blast Audit is an Excel add-in that links audit evidence to cells with OCR, matching and AI. One plan at €45/user/month, with a 14-day free trial.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
Blast Audit is an Excel add-in for audit teams that links values in a workbook to the supporting documents behind them. Users import PDFs, scans or Word files, draw on the document, and the value, formula or mark lands in the selected cell. The cell keeps a link to the exact spot in the source, so a reviewer can select it and see the evidence.
The vendor describes the product as a way to extract and cross-reference audit evidence without leaving Excel. It is published on Microsoft AppSource, and the company is a Microsoft Partner. Snips, evidence links and annotations are saved in the .xlsx file itself, so the workbook can be emailed to a reviewer or archived with the evidence intact.
The workflow has three steps. A user opens a document in a viewer beside the sheet, with OCR applied where the document needs it. They select a target cell, choose a snip type, and draw on the document. The value, formula or mark is written to the cell together with its link to the source.
The viewer follows the selected cell. If a cell has no snip yet, the viewer searches the open document for the value the cell shows, so the evidence is often visible before anything is drawn. Matching runs on the user's machine, while OCR, Probe and AI Extraction send documents to Blast Audit servers for processing.
Snip is the core feature, with five types: Text for single values, Sum for formulas such as =a+b-c, Table for rows and columns, Validation for a check mark, and Exception for a flagged difference with a red fill. The tool reads decimal marks from the document, so German and English number formats reach Excel as the same number.
Beyond capture, Blast Audit offers automated matching, Probe for questions answered with page and clause citations, and AI Extraction with reusable templates. Version Comparison checks up to ten versions against a reference and exports an annotated evidence pack. The AI Agent operates Excel, and an MCP server connects Claude, ChatGPT or Grok to the file.
Blast Audit is an Excel add-in for audit teams. It writes values from PDFs and scans into cells and keeps a link to the exact spot in the source document. It also offers OCR, document matching, AI extraction and document Q&A.
Blast Audit costs €45 per user per month billed monthly, or €37.50 per user per month (€450 per year) billed annually. All features are included in one plan. For 5 users the site shows €187.50 per month or €2,250 per year.
Yes. Blast Audit offers a 14-day free trial. The pricing page says no credit card is required and the subscription can be canceled anytime.
Yes. When you open a DataSnipper workbook, a banner offers to migrate the data it detects, and the original data stays intact. Documents and snips are imported, and a report that can be exported as CSV lists what converted and what needs review.
Documents sent for OCR, Probe or AI Extraction are kept at most 24 hours after upload. Engagement content is kept while the engagement is open and deleted 30 days after it is closed. Documents and snips otherwise stay in your own workbook.
The site says it never trains models on customer documents, and that Microsoft may not do so without documented instructions, which it does not give. Microsoft does temporarily store Azure OpenAI requests and responses for abuse monitoring.
It works inside Microsoft Excel and is published on Microsoft AppSource. It imports DataSnipper workbooks and has an MCP server for connecting Claude, ChatGPT or Grok to your file.
It is aimed at audit teams that build workpapers in Excel and need evidence linked to cells. Teams currently using DataSnipper can import their existing workbooks.