PrivacyNotes's answer:

Honestly? We have no idea, and that is the entire point. Signup is anonymous (a recovery phrase or Google, no email or personal details), the app ships zero analytics and zero trackers, and zero-knowledge encryption means we cannot see who you are or what you store. We could not name a single customer if we tried. A privacy product that tracked its users closely enough to brag about them would be missing the plot.

SheetDelta's answer

SheetDelta allows you to see exactly WHAT changed between edit to spreadsheets. Excel itself will only tell you that something has changed and it is for you to find out. We analyse your spreadsheets for common risks that could lead to miscalculations down the road.

PrivacyNotes's answer:

PrivacyNotes is the only zero-knowledge encrypted workspace that keeps notes, tasks, journals, files, and a password vault behind one set of on-device keys. Most privacy apps do one of those well and rent it to you monthly. We do all five, encrypt everything with XChaCha20-Poly1305 before it leaves your device, and charge once instead of forever. The encryption core is open core, published so the claims can be verified rather than trusted.

SheetDelta's answer

SheetDelta is a modern, fast and most comprehensive tool when it comes to spotting, tracking and mitigating changes and risks in spreadsheets.

PrivacyNotes's answer:

Three reasons:

• One app, not four subscriptions. Standard Notes, Day One, and Lunatask each rent you a slice (notes, journaling, tasks). PrivacyNotes covers all of them plus files and a vault, for a fair one-time fee.
• Real zero-knowledge. Your keys come from a recovery phrase that never touches our servers, so we cannot read your notes, your filenames, or your metadata. Some encrypted apps leave note or task metadata in the clear; we do not.
• Verifiable, not just trusted. The crypto and schema are open core and published for review, and there is no ad, tracker, or analytics anywhere in the app.

SheetDelta's answer

Anyone managing serious spreadsheets. If you base real business decisions on spreadsheets, this application is for you. It is very easy to make a mistake in Excel that goes by unnoticed. We help you catch these mistakes before they cost you money.

PrivacyNotes's answer:

Privacy-conscious individuals and independent professionals who handle information they would not want a vendor reading: lawyers, journalists, healthcare and mental-health practitioners, developers, security specialists, researchers, and founders. It also fits anyone who simply wants one private home for their notes, tasks, journaling, and wellness tracking instead of spreading them across surveillance-funded apps.

SheetDelta's answer

SheetDelta uses Rust, Typescript and Elixir

PrivacyNotes's answer:

React, TypeScript, Vite and Tailwind CSS.

SheetDelta's answer

We come from a software engineering background and were used to having first class testing, linting, comparision and automation support in software. Once we built more complex spreadsheets we quickly realised this does not exist in the Excel world and instead everyone relies on strict discipline to avoid these mistaken. So we set out to build SheetDelta, the tool we wanted ourselves.

PrivacyNotes's answer:

PrivacyNotes started from a simple frustration: staying organized meant scattering your life across half a dozen apps, most of which could read everything you typed and billed you monthly for the privilege. We wanted one place for notes, tasks, journals, files, and passwords, encrypted so thoroughly that the people running the servers could not read a word of it, and paid for once rather than forever. So we built the encryption first, made the keys live only on your device, and published the crypto as open core so the promise could be checked, not just believed. Everything else grew from one rule: your data is yours, and no one else's to mine.