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Posts

Guides to keeping your data
on your own devices.

Practical pieces on the apps, on-device design and the privacy decisions behind them. New posts appear here as we publish them, with no newsletter wall in the way.

Posts

24

Published pieces

All pieces

Everything we have
published.

Zen PasswordsPrivacy3 min read

The thinking behind the two-key design: how a Secret Key is combined with your master password, why there is no partial credit, and what it does not protect against.

Zen SlateComparisonPrivacy3 min read

Apple Notes is good, and it syncs to iCloud by default for most people the moment they sign in. Zen Slate keeps notes on your device until you deliberately turn sync on. Here is an honest comparison of organization, editing, and where each app fits.

Zen PasswordsPrivacyHow to3 min read

Most password managers ask you to trust a stranger's cloud before you have typed a single password. Zen Passwords encrypts your vault on your iPhone first, with sync riding your own Apple ID only if you turn it on. Here is what "on device" actually buys you.

Bulk Delete3 min read

AI chat sidebars fill with hundreds of half-finished conversations, and deleting them one at a time is the reason nobody does. Bulk Delete adds selection to ChatGPT, Claude, and Gemini, runs locally in Chrome, and needs no account.

Zen Whisper4 min read

Most dictation tools treat Hindi as an afterthought and Hinglish as a mistake. Zen Whisper exposes 110 spoken language options including Hindi, Hinglish, and English regional variants, with core speech recognition running on your Mac.

Zen WhisperPrivacyHow to5 min read

Most dictation sends your voice to somebody else's server to be turned into text. Zen Whisper runs core speech recognition on your Mac, inserts text at the cursor in the apps you already use, and works in 110 spoken languages. Here is how that changes what you are willing to dictate.

Zen WhisperPrivacyHow to3 min read

Uploading a recording to a transcription service means handing over somebody else's words as well as your own. Zen Whisper transcribes audio and video files on your Mac, keeps a searchable history, and works in 110 languages.

Zen SlateComparisonPrivacy4 min read

Cross-device notes should not mean handing your journal to a stranger cloud. This guide explains how Zen Slate Pro uses Apple CloudKit for optional sync, what stays local, and how it compares to subscription-heavy alternatives.

Zen TeleprompterPrivacySync4 min read

You should not need to create an account just to read your own words on camera. This explainer covers on-device script storage, optional iCloud sync through Apple, and how Zen Teleprompter treats privacy for presenters and creators.

Zen TeleprompterHow to4 min read

Talking-head YouTube clips fail when you stare at notes on the floor. This guide covers script overlay recording, scroll speed, and a repeatable solo setup on iPhone and iPad, with Zen Teleprompter as the on-device option that keeps your takes clean.

Zen HorologyHow to4 min read

Mechanical watches drift. Collectors who care measure that drift against a reliable time source, log it, and spot problems early. Here is a plain-language workflow using atomic time sync and accuracy charts in Zen Horology on iPhone and iPad.

Zen HorologyPrivacyHow to4 min read

Collectors deserve more than camera-roll chaos and half-finished spreadsheets. This guide explains what a serious watch vault should track, why offline privacy matters, and how Zen Horology keeps references, photos, and service history in one finished app on iPhone and iPad.

Zen SlateComparisonPrivacy5 min read

Bear is a strong minimalist notes app. Zen Slate targets the same job with folders and tags, local-first storage, and iCloud sync behind optional Pro. This comparison covers privacy, formatting, organization, sync, and price so Apple-first writers can pick with confidence.

Zen TeleprompterPrivacy4 min read

Many teleprompter apps stamp your exports with a logo. This guide explains what to check before you download, how mirror mode and script-overlay recording should work on iPhone and iPad, and why Zen Teleprompter is built for clean takes that stay on your devices.

Zen PasswordsHow toSync6 min read

Moving password managers is a little like moving house: the heavy lift is choosing what to pack, not the truck. Zen Passwords imports on your device, previews before you commit, and never uploads your export to us. Here is how migration works today, including formats, taps in the app, and the free tier.

Reading list

Written for people
who read the details.

Every piece here explains a real decision in one of the apps: what stays on your device, what a permission unlocks, and what we chose not to build.

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