KeptPDF VS InterviewEar

KeptPDF's answer

KeptPDF runs entirely in your browser. Your file, and the text inside it, never leaves your device. Not to an AI, not even to us. You can open your browser's network tab and watch: the document bytes never go out.

Most online PDF tools upload your file to a server first, and some "AI redaction" services quietly send your document text to a third-party model. That is the exact risk people are trying to avoid when they redact something.

KeptPDF also does true redaction. The text is removed from the file, not covered with a black box you can copy out later. Every redaction produces a verification certificate you can share with the file.

InterviewEar's answer:

InterviewEar is a real-time AI interview copilot, with a few things that set it apart:

• It answers you live during the interview, on a screen only you can see, and stays invisible on screen shares and recordings. It never joins the call as a bot.
• Every suggestion is built from your own saved profile and the specific job, so the answers reflect your real experience instead of a generic script.
• It works alongside Zoom, Google Meet, and Microsoft Teams, on macOS and Windows, in 30+ languages.
• Your first session is free with no card, and plans start at $19/month, well below most competitors.

KeptPDF's answer

Three reasons.

Privacy you can verify, not just a promise. Processing happens locally in the browser, so there is no upload step to trust. We do send anonymous usage counts for quota, and we say so plainly, but never your document.

Real redaction with proof. Removed text is permanently gone, and you get a certificate showing the file was checked for leftover extractable text. Automated detection cannot catch everything, so a final human review is still your job, and the tool says that too.

It works on a phone. Most PDF suites assume a desktop. KeptPDF was built and used on a phone first, so redacting a document while you are standing in a hallway actually works.

InterviewEar's answer:

InterviewEar does the same core job as tools like Final Round AI, Cluely, and Parakeet: it listens to your interview and suggests the right answer in real time. The difference is price and honesty. It starts at $19/month (versus $50 to $150 for most), the stealth overlay is included on every plan, and your first session is free with no card. Just as important, every answer is grounded in your own profile and the specific job, so it sounds like you, not a template.

KeptPDF's answer

Anyone who has to hand a document to someone else and needs the sensitive parts gone first.

In practice that is solo attorneys and small law firms, accountants and tax preparers, healthcare and records staff handling requests, HR teams, and individuals dealing with their own medical, legal, or financial paperwork.

The common thread is not an industry. It is a person who cannot upload a confidential file to a random website, and who does not have an enterprise IT budget to solve it.

InterviewEar's answer:

Job candidates preparing for and sitting live interviews, especially for technical and competitive roles where the pressure is highest. It is built for people who know their field but freeze or blank in the moment, and who want personalized, real-time backup grounded in their own experience. The same overlay also helps in sales calls and client meetings.

KeptPDF's answer

A family member got seriously ill. We spent most days at the hospital, and straight answers were hard to come by, so we leaned on AI tools to make sense of the records, notes, and lab results.

But you cannot paste a medical record into an AI chat. You have to strip the names, the ID numbers, the diagnoses first. And almost every tool we found either wanted to upload the whole file to a server, or "auto-redacted" by sending the document text to an online AI. That was the exact thing we were trying to avoid.

Most of this was happening on a phone, at a bedside. So I built the tool I needed: redaction that runs on the device, works on mobile, and never sends the file anywhere. That turned into KeptPDF, which is now a full PDF suite with over 20 tools, all local-first.

InterviewEar's answer:

InterviewEar started from a simple frustration: interviews measure how well you perform under pressure, not how good you actually are at the job. Capable people freeze, blank on questions they know cold, or ramble. InterviewEar was built to close that gap, a quiet assistant that listens to your interview and surfaces the right thing to say in the moment, grounded in your own experience. It is made by Teapot Technologies as a tool for interview preparation and live assistance.

KeptPDF's answer

The app is plain JavaScript with no front-end framework, which keeps it fast and keeps the code auditable.

PDF work happens in the browser using pdf.js for rendering and pdf-lib for writing. Text recognition uses Tesseract running as WebAssembly. Password and encryption handling uses a WebAssembly build of qpdf. It is a Progressive Web App, so it installs and works offline.

The thin server side is Node on Vercel, with Postgres for accounts, Stripe for billing, and Resend for email. None of those ever see a document.

KeptPDF's answer

KeptPDF is early and independent, and we do not publish customer names. The product is privacy-first by design: we never see your documents, and we do not track who our users are or what they work on. Publishing a client list would sit badly next to that.

The user base today is mostly solo attorneys, small firms, accountants, and individuals handling their own records.