A full history of every version.
Vowl keeps every version of every file. See exactly what changed, when, and who made it, with the reasoning behind each change kept attached so it never gets lost in an email thread.
One source of truth for every model.
One place to track every change, approve what goes live, and always know which version is real.
Free for individuals and small teams. No credit card required.
AI can build the model. You still have to stand behind it.
AI is changing how models get built and how analysis gets done. It hasn't changed whose name is on the work. Your team still has to know what changed, why it changed, and whether it holds up. Vowl gives you that record on every file.
Control the whole life of a file.
Nothing goes live until it's approved.
Reviewers see exactly what is changing and sign off on the record. Every approval is logged, so you always know which version went to the IC and who stood behind it. Your audit trail builds itself.
A second set of eyes on every change.
Vowl reads each change and flags what matters: broken references, assumptions drifting out of range, numbers that quietly stop tying out. Write your team's standards in plain English and get an automatic review on every change.
Lives where your team already works.
Pull the latest version into your workbook, save a working copy, and open a change request without ever leaving Excel. Changes sync back to Vowl the moment they're approved.
Excel 
SharePoint 
Google Drive Built for teams that can't afford a wrong number.
Private Equity
LBO models, investment memos, and portfolio files. Know exactly which version went to the IC and who approved it.
Investment Banking
Operating models, CIMs, and pitch materials across deal teams. Keep junior edits visible and senior sign-off on the record.
Corporate Finance & FP&A
Forecasts, budgets, and board decks. Stop guessing whose numbers are current across every planning cycle.
Accounting & Audit
An audit-ready trail for every workbook. Show exactly what changed between close cycles and who signed off.
Consulting
Client models and deliverables across engagements. Keep work product clean as teams roll on and off.
Strategy & Operations
Planning models and reporting for leadership. Make every number traceable back to the decision it supported.
Start using Vowl free.
Create your workspace in under a minute. Invite your team when you're ready.
Rolling Vowl out across a firm?
Thanks — we'll be in touch.