Last updated: 27 September 2026
YesterKeep turns your photos, calendar, places and notes into a private daily timeline. It is built to keep your life on your device. We do not sell your data, we do not run advertising, and we do not track you across other apps or websites.
YesterKeep is made by Aipops, CVR 34940088, a company registered in Denmark. Aipops (“we”, “us”) is the developer of the YesterKeep iPhone app and the data controller for the limited processing described below. You can reach us at privacy@yesterkeep.com.
YesterKeep only accesses what you grant. Each of these is optional; the app adapts to whatever you allow. Access is used solely to build your private timeline on your device.
| Data | Why it is used |
|---|---|
| Photos | To build your daily timeline from the moments you captured, including screenshots. Text recognition and scene classification run on the device. |
| Calendar (Apple, Google, Outlook) | To attach events to the right day. Google and Microsoft calendars are optional, read-only connections. |
| Location | To recognise places you visited so your days have context. |
| Contacts | To recognise people who appear in your memories. |
| Health & Motion | To add workouts, routes, steps, sleep and activity context to a day. Health access is read-only. |
| Reminders | To add tasks and lists to your timeline. |
| Apple Music | To add what you recently listened to. |
| Camera | To scan documents, receipts and tickets into your timeline. |
| Microphone & Speech Recognition | To record a voice thought, only while you are recording one. If you allow it, what is said in your voice thoughts and videos is recognised on your iPhone — never sent anywhere to be understood — and written onto their days. Recordings and their words stay on your device, and leave it only inside YesterKeep's encrypted backup in your iCloud. |
| Mail (Gmail, Outlook) | If you connect a mailbox, to extract memories such as trips and confirmations. Read-only, and metadata only: the app fetches the subject line, sender, date and the short preview snippet — never the body of a message. |
| Files & iCloud Drive | To import documents you choose into your timeline. |
This information stays on your device and is not uploaded to us. Uninstalling the app removes it from your iPhone.
Your archive is kept out of your ordinary iPhone backup. Where iCloud is on for YesterKeep, one copy is kept in your own private iCloud instead: encrypted on your iPhone before it leaves, with a key kept in your iCloud Keychain and never sent to us. Apple stores only the encrypted copy, and neither Apple nor we can read it. It is how a new iPhone gets your days back — the first time YesterKeep opens there, it offers to bring them back. The key travels with your iCloud passwords, so a new iPhone can open the backup only if those sync to it. Photos from your photo library are not copied — only which day they belong to. Health and motion records are not in it. After a restore, Health records are read again from Apple Health; motion only for the past week, which is all iOS keeps.
To keep your archive out of iCloud, turn iCloud off for YesterKeep in iOS Settings (your name → iCloud). Then a lost, erased or replaced iPhone takes the archive with it. Settings → Export My Data writes everything to a single file you keep.
Connecting Gmail or Outlook uses the provider’s own sign-in page in a private browser session; YesterKeep never sees your password. Access is read-only, and the app requests only message metadata — subject, sender, date and the provider’s short preview — never message bodies. The sign-in tokens are stored in your iPhone’s Keychain, restricted to this device, and are erased when you disconnect the account or delete your data.
All of YesterKeep’s intelligence runs on your iPhone. On iPhones with Apple Intelligence (iOS 26), a short account of the day can be written on the device using Apple’s on-device models, from what is already stored there. On devices without Apple Intelligence, the day keeps its deterministic evidence and title without generated prose. Search such as “when was I last in Rome?” also runs on your iPhone, using Apple’s on-device language frameworks. No memory content — no text, no photographs — is sent to us or to any AI service. There is no cloud AI of any kind.
Your archive is never sent to us — we have no servers. A few features do ask another service for something, so a day can have a place name or weather:
| Service | What is sent, and why |
|---|---|
| Place names (geocoding) | Coordinates are sent to Apple to turn them into place names, exactly as Maps does. |
| WeatherKit (from 1 August 2021) | Coordinates and dates are sent to Apple to fetch the weather for a memory day. Apple’s historical archive starts on that date. |
| Open-Meteo (before 1 August 2021) | Coordinates rounded to two decimal places (about a kilometre — the weather model’s own grid is far coarser) and the civil date are sent to Open-Meteo’s archive API (archive-api.open-meteo.com) for ERA5 reanalysis of that place on that day — not a climate average. Weather data by Open-Meteo.com. Open-Meteo’s terms say they may keep web-server logs that include IP address and coordinates, deleted after 90 days. We do not receive those logs or the request. |
| Apple Music | Apple’s music service is asked for your recent listening history, if you allow it. |
| iCloud (only if you switch on backup) | An encrypted copy of your archive is stored in your own private iCloud. Apple holds ciphertext it cannot read; health and motion records are never included. |
| App Store (StoreKit) | Apple processes subscription purchases; we never see payment details. |
Requests to Apple go under Apple’s Privacy Policy. Requests to Open-Meteo go under Open-Meteo’s terms. Neither goes to servers of ours, because we do not have any.
Optional subscriptions (YesterKeep Plus) are handled entirely by Apple through the App Store. Apple processes your payment; YesterKeep never sees your card or payment details. Apple’s handling of that transaction is governed by Apple’s Privacy Policy. Your timeline and capture stay on your device whether or not you subscribe.
None. YesterKeep contains no third-party analytics, advertising or tracking SDKs, and no analytics of our own. Crash reports and performance diagnostics stay on your device unless you choose to export them yourself. The App Store privacy label declares Precise Location and Coarse Location because historical weather requests before 1 August 2021 are logged by Open-Meteo as described above — not linked to an identity, not used for tracking, and used only to show the weather for that day.
If you are in the EU/EEA, you have rights under the GDPR to access, rectify, erase, restrict and port your data, and to object to processing. Because your memories live on your device, you exercise most of these rights directly in the app. For anything else, contact us at privacy@yesterkeep.com. You also have the right to lodge a complaint with your local supervisory authority (in Denmark, Datatilsynet).
YesterKeep is not directed to children and is not intended for use by children under 13.
If we make material changes, we will update this page and revise the date above. Continued use of the app after a change means you accept the updated policy.
Questions about privacy? Email privacy@yesterkeep.com.