About this policy
PawPaw operates Stacklog, an app for iPhone and Android where one line about something you did becomes a stone on that month’s tower. Stacklog needs no account and has no advertising or tracking tools. It doesn’t ask anyone, including children, for a name, email address, or other contact details. What you write isn’t sent to PawPaw, and PawPaw can’t see it. The only information Stacklog sends to a service PawPaw uses is the app and purchase information described under Purchases.
Your entries
Your lines, their dates and times, each stone’s material, shape, position, and carved words, and your settings are stored on your device. If you’re signed in to iCloud, Stacklog syncs your entries through your private iCloud database (CloudKit) to your other devices signed in with the same Apple Account. Apple stores that data under its iCloud terms, and PawPaw can’t access it. Stacklog runs no server of its own.
On Android, Stacklog doesn’t sync your entries between devices. If backup is turned on in Android, your entries and settings are included in your Google Account backup and come along when you restore that backup or copy your data to a new phone. Google stores the backup under its terms, and PawPaw can’t access it.
Widgets read only a summary that the app leaves in a space it shares with them on your device: this month’s stones and the days you stacked. Medium and large Home Screen widgets can show your latest lines.
Backup files
Stacklog creates a backup file (JSON) on your device only when you tap Export Entries, and the file goes only where you choose in the share sheet, such as the Files app or Mail. PawPaw doesn’t receive it. The file holds your lines, their dates and times, and each stone’s material, shape, position, and carved words without encryption, so keep it somewhere you trust. Once you save or send it, that destination’s privacy practices apply.
On Android, the file is saved only where you choose in Android’s file picker, such as your phone’s storage or Google Drive.
Import Entries reads the file you choose on your device and adds only entries you don’t already have.
Apple Intelligence
When a line is too long to carve in full, Stacklog can ask Apple’s on-device model to choose the words carved into its stone. This needs iOS 26 or later, a supported device, and Apple Intelligence turned on. Your line is processed on your device and isn’t sent to PawPaw or any other AI provider. The chosen words are saved with your entry. If the model isn’t available or doesn’t answer in time, Stacklog chooses the words by a simple rule. On Android, Stacklog always chooses the words by that rule on your device.
Reminders
If you turn on Daily Reminder, Stacklog schedules local notifications on your device. They aren’t sent from a server, and they don’t include your entries. A line you write from a reminder with Stack Now is stored on your device like any other entry. You can turn reminders off in Stacklog’s Settings or in your device’s settings.
Posters and sharing
Posters are drawn on your device, and some layouts include the lines you wrote. When you share a poster, only the image goes to the app or destination you pick in the share sheet, and that destination’s privacy practices apply. If you save a poster to Photos, iOS asks for permission to add photos. On Android, Save Image adds the poster to your Pictures folder, which needs no permission. Stacklog never reads your photo library.
Purchases
Stacklog Pro is a one-time purchase. On iPhone, Apple processes the payment. Stacklog checks your purchase with Apple’s StoreKit and never receives your payment details. So that PawPaw can see its sales, Stacklog also uses RevenueCat. When Stacklog opens, it sends RevenueCat an anonymous identifier created by the app, the identifier iOS gives apps from the same developer, and technical data such as device model, system and app version, language, App Store country, and network information. When you buy or restore Stacklog Pro, it also sends Apple’s transaction record for that purchase. Even an anonymous identifier can link RevenueCat’s records to one another. Your entries, name, and email address are never sent to RevenueCat. See the RevenueCat and Apple privacy policies.
On Android, Google Play processes the payment. Stacklog checks your purchase with Google Play Billing and never receives your payment details. When Stacklog opens on Android, it sends RevenueCat an anonymous identifier created by the app and technical data such as device brand and model, Android and app version, language, Google Play country, and network information, but not the advertising ID or any other device identifier. When you buy or restore Stacklog Pro, it also sends Google Play’s record of that purchase. See the Google privacy policy.
Retention and deletion
Each entry stays until you remove its stone. To remove one, tap the stone and choose Remove; if you use iCloud, it’s removed from your other devices too. Deleting the app removes the entries stored on that device. Entries synced to iCloud stay there until you delete Stacklog’s data from iCloud storage in iOS Settings. On Android, a copy in your Google Account backup stays until Google replaces or removes it under its backup policy, or until you delete that backup from your Google Account. Backup files you exported stay wherever you saved them until you delete them.
Apple, Google, and RevenueCat keep purchase records under their own policies and legal obligations. Deleting the app doesn’t erase them or stop you from restoring Stacklog Pro.
Your choices and contact
PawPaw never receives your entries, so it can’t view, retrieve, or delete them for you. Your rights under applicable privacy law remain available. For privacy, deletion, or support requests, contact support@pawpawdigital.com. Records kept by RevenueCat, Apple, or Google may require a request to them, and RevenueCat may process data outside your country, such as in the United States, under its privacy policy. See Stacklog Support.
If you contact support, PawPaw uses the contact details and information you choose to send only to respond. Visits to this website may also generate ordinary hosting records, such as IP address, request time, and browser information, to deliver and protect the site.
Changes to this policy
If Stacklog’s data practices change, PawPaw will update this page and its date.