Keystone Daily Planner

Inspired by the Preach My Gospel calendar and scheduling app, Keystone is the doorway to help you manage your time and life more effectively.

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Keystone Pro

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• Terms of Service

• Privacy Policy

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Terms of Service

Updated October 5, 2026Keystone is made by KeyStone Software. These terms cover your use of Keystone. By using the app, you agree to them. If you don't agree, please don't use Keystone.The serviceKeystone is a personal calendar, goals, and contacts app. Core features are free. Pro is an optional one-time purchase that unlocks additional features listed on the pricing page. It is not a subscription, and there's nothing to cancel once purchased.AccountsAn account is only required for cloud sync, shared calendars, and buying Pro. You're responsible for keeping your sign-in credentials secure, and for anything that happens under your account.PurchasesPro is billed once, through the App Store or Google Play depending on where you bought it. Refunds are handled according to that platform's own refund policy: Apple's or Google's store policies, depending on where you purchased.Your contentYou own what you put into Keystone: your events, goals, notes, and contacts. You're responsible for the accuracy of anything you enter, including information about other people (for example, a contact's phone number or address). Don't use shared calendars or invites to spam, harass, or contact someone who hasn't agreed to it.TerminationYou can delete your account at any time from Settings → Account. We may suspend or terminate access for use that violates these terms, such as abusing the sharing or invite features.DisclaimerKeystone is provided "as is." Reminders, travel-time warnings, and route suggestions are estimates meant to help you plan. They're not guarantees, and you're responsible for confirming anything time-sensitive or safety-related yourself. To the extent the law allows, we aren't liable for indirect or consequential damages arising from your use of the app.Changes to these termsIf these terms change materially, we'll update the date above and let you know in the app.ContactQuestions about these terms can go to [email protected].

Privacy Policy

Updated October 5, 2026Keystone is made by KeyStone Software and built around one idea: your calendar, your goals, and your people are your data, kept on your device by default. This page explains what that means in practice: what Keystone collects, when (if ever) it leaves your device, and how to delete it.What stays on your deviceEverything you enter (events, goals, tasks, notes, contacts, map pins, and app settings) is stored locally on your device. Keystone works fully offline, and none of this is sent anywhere unless you turn on one of the optional features below.If you turn on automatic backups, or export one manually, from Settings → Your data, Keystone also saves a copy of your data as a file in your device's Documents folder, outside the app's own private storage. Unlike everything else on this page, that file is visible to other apps on your device with file access, though it still never leaves your device unless you move it yourself.What can leave your device, and why
An account (optional). Signing in creates an account via our authentication provider, Clerk, which stores your email address. You don't need an account to use Keystone's free features.
Cloud sync (optional, Pro). If you turn this on, your app data is stored on our server so it can follow you to another device. It's off by default.
Shared calendars (optional, Pro). If you create or join a shared calendar, the specific events on that calendar are visible to the specific people on it. Nothing else in your data is shared.
Location (optional). Keystone only uses your device's location if you actively use a location feature: dropping a pin, geocoding a contact's address, or setting up an arrival reminder. It doesn't track your location in the background beyond what an arrival reminder you've explicitly set up needs to fire.
Map search and address lookup. Searching the map, dropping a pin by address, or entering a contact's address sends that search text to OpenStreetMap's Nominatim service to look up coordinates, and map tiles are loaded from OpenStreetMap. Both happen directly from your device, without going through our server. Keystone doesn't control what OpenStreetMap does with that traffic; see their own privacy policy.
Google Calendar & Contacts (optional, Pro). If you choose to connect Google in Settings → Account & sync, Keystone requests read/write access to your Google Calendar and read-only access to your Google Contacts. Contacts is a one-time import into your local data, same as picking a .vcf file. Calendar is kept in sync going forward, in both directions, while the app is open: single (non-repeating) events you create, edit, or delete in Keystone are pushed to your Google Calendar, and changes made on Google are pulled in the same way. This only happens while Keystone is open, not in the background. Our server holds a Google-issued token to do this, until you tap Disconnect (which also revokes it). Keystone's use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements: that data is used only to show and sync your own events/contacts, is never used for advertising, and is never sold or shared with anyone other than you.
Payment (Pro purchase). Payment is handled entirely by the App Store or Google Play, depending on how you bought Pro. Keystone never sees or stores your card details, only whether the purchase succeeded.
Who else sees itKeystone uses a small number of service providers to run: Clerk for authentication, Google (only if you choose to connect it, for the one-time import above), OpenStreetMap/Nominatim for map tiles and address search, and a hosting provider for the optional sync server. Each only sees the specific data their job requires (Clerk sees your email; Google sees only the read-only access you granted; OpenStreetMap sees the map area or address text you search; the sync server sees your data blob only if cloud sync is on). None of them are permitted to use your data for their own purposes. We don't sell data, and we don't run ads or third-party trackers in the app.Your data, your control
Delete individual events, goals, contacts, or notes any time, right in the app.
Disconnect Google any time from Settings → Account & sync. This revokes its access on Google's side and deletes the stored token; it doesn't remove events/contacts already imported, which is a separate, local action like anything else you've entered.
Clear all local data from Settings → Your data. This resets the app on this device.
Delete your account entirely from Settings → Account. This permanently removes your account, your Pro purchase record, and anything stored on the server for it (synced data, shared calendars you own). It doesn't touch data already saved on your device, which is a separate, local action.
Children's privacyKeystone isn't directed at children under 13, and we don't knowingly collect personal information from them.Changes to this policyIf this policy changes in a way that affects what we collect or how we use it, we'll update the date above and, for material changes, let you know in the app.ContactQuestions about this policy or your data can go to [email protected].