Krunch Privacy Policy

The Krunch app does not collect, sell, share or track any personal data. There are no accounts, no analytics, no advertising and no server of ours that receives anything you enter. This page explains that in full, for the Krunch iOS app and for this website.

Effective 1 October 2026 · Last updated 19 October 2026

Who is responsible

Krunch is made and operated by Jakub Sůva, an individual developer based in the Czech Republic, who is the data controller for the purposes of the EU General Data Protection Regulation. For anything in this policy you can write to hello@jakubsuva.com.

The short version

The app does not collect your name, email address, location, contacts, photos, device identifiers or any other personal data.
There is no account or sign-in, in the app or on the website.
There is no advertising, no analytics, no crash-reporting service and no third-party SDK in the app.
Nothing is used to track you across other companies' apps or websites.
What you save in the app stays on your device and, when your iPhone is signed into iCloud, in your own private iCloud.

The iOS app

What the app stores

The app stores two kinds of things, both in its own storage on your device. We never receive a copy of either.

Your journal, made of the jars you choose to save: the vegetable or blend, the recipe and flavour you used, the date, the short jar code, when it should be ready, whether it's finished, and your star rating, tags and notes.
Your settings and the calculator's memory: units, appearance, the screen the app opens on, the reminder time, and your last choices in the calculator (vegetable, amount, vinegar, salt and sugar), so it picks up where you left off.

If the journal file is ever damaged, the app sets the damaged copy aside next to it instead of deleting it, so nothing you saved is lost silently.

iCloud sync

When your device is signed into iCloud, the app also keeps your journal in your own private iCloud database (Apple's CloudKit), so it reaches your other devices signed in with the same Apple ID. This happens automatically; settings and the calculator's memory stay on the device. The data lives in your iCloud account under Apple's terms and privacy policy and is encrypted by Apple in transit and at rest. We cannot read it or access it; Apple shows developers only anonymous totals, such as how much storage the app uses overall. If iCloud is off or unavailable, the app works exactly the same, using the device only. You can turn iCloud off for Krunch at any time in Settings, your name, iCloud.

Notifications

When you save a jar with its reminder on, the app asks once for permission to send notifications. For ferments the reminder is on by default, and you can switch it off before saving. Reopening a finished jar schedules its reminder again. Reminders are local notifications, scheduled on your device for the day the jar should be ready; they contain only the vegetable's name. No push server is involved and nothing is sent to us. You can turn them off in iOS Settings at any time.

Sharing

The share button on a recipe hands the recipe text (the amounts, timing and add-ins, nothing from your journal) to the iOS share sheet. It goes only where you choose to send it, and only when you tap it.

Diagnostics from Apple

If you have chosen in iOS Settings to share analytics with app developers, Apple may give us aggregated usage figures and crash reports for Krunch through App Store Connect. Apple collects and anonymises these under its own privacy policy; they do not identify you, and we cannot link them to you. You can turn this off at any time in Settings, Privacy & Security, Analytics & Improvements.

Permissions the app does not use

The app does not ask for access to your location, contacts, camera, microphone, photos, health data, tracking (App Tracking Transparency) or Bluetooth.

The website

This website (jakubsuva.com/krunch/) is a set of plain static pages about the app and fermenting. They run no code in your browser, store nothing in it and have no form or other feature that would keep anything you enter.

The site is served by Cloudflare. Like almost every web host, Cloudflare processes technical request data (such as your IP address, browser type and the page requested) in order to deliver the site and protect it from abuse. We do not use this data to identify you and we do not add any analytics of our own.

The Krunch home page uses the Fraunces typeface served by Google Fonts. When your browser loads it, Google receives your IP address and browser details, as with any web font request. Google Fonts does not set cookies for this.

The website sets no cookies of its own, and has no advertising or tracking scripts.

If you write to us

The Support link in the app's Settings opens your own mail app, and nothing is sent unless you send it. If you email us, we receive your email address and whatever you write, and use them only to answer you. We keep the conversation in our mailbox for as long as it is useful for helping you, and delete it on request.

Children

Krunch is a general kitchen tool and is not directed at children under 13. Because it collects no personal data from anyone, it also collects none from children.

Retention and deleting your data

One jar: open it in the journal, tap Delete, then tap again to confirm. It is removed from the device straight away, from iCloud as soon as the device is online, and from your other devices the next time they open Krunch.
Everything: in the app, Settings, Delete all data, deletes every jar from the journal on the phone and in iCloud, clears your usual setups, your reminders and your settings, and starts the app again from the intro. Your other devices drop their copies the next time they open Krunch, so nothing comes back when you reinstall. The app asks you to confirm first, and this cannot be undone.
If you only delete the app: that removes what is stored on the phone, but the journal in your private iCloud stays, so reinstalling brings it back. To remove that copy without the app, go to Settings, your name, iCloud, Manage Storage (or Manage Account Storage), Krunch, and delete the data. Do it after deleting the app on every device: a copy of the app that is still installed syncs its journal back to iCloud the next time it opens.
Website: it stores nothing in your browser, so there is nothing to clear.

Because we hold no copy of your app data, there is nothing on our side to delete, export or correct. You already have the only copies, or Apple holds them for you under your Apple ID. The one exception is an email you send us, which we delete when you ask.

Your rights

Where laws such as the EU/UK GDPR or the California CCPA apply, you have the right to access, correct, delete and port your personal data, and to object to or restrict its processing. Since we do not collect any personal data through the app or the website, the only thing these rights could apply to is an email you have sent us, which we will show you, correct or delete on request. You are welcome to write to us at the address above with any question. You also have the right to complain to a data protection authority: in the Czech Republic that is the Office for Personal Data Protection (uoou.gov.cz), or the authority where you live.

Security

Data stays on your device and, when iCloud is on, in your private iCloud, protected by the security of iOS and your Apple ID. We run no database of user data, so there is none to be breached.

Changes to this policy

If this ever changes, for example because a future version of the app or site sends data anywhere new, this page will be updated first and the date at the top will change. For a material change that affects the app, the App Store privacy details will be updated as well.

Contact

Questions about privacy: hello@jakubsuva.com. For help using the app, see the support page.