Effective date: November 10, 2026
Penly is a notebook app that lets you write in your own handwriting font. This policy explains what happens to your information when you use Penly on iPhone and iPad.
The short version: Your notes, handwriting and photos stay on your device. Penly has no accounts and no ads. To keep the app working and improve it, Penly uses Google Firebase (analytics and crash reports) and RevenueCat (purchases). They receive a random identifier, how you use Penly's paywall and purchases, purchase records and crash reports. None of this includes your notes, your handwriting, your name or your email address. Your data is never sold and never used for advertising or tracking.
Penly does not have accounts or sign-in. When you use the app, the following is sent to our service providers (section 3):
Identifiers: a random app user ID created by RevenueCat when you first open Penly, and the Firebase app instance ID. These identify your installation of Penly, not you as a person. Penly does not use the advertising identifier (IDFA).
Purchase history: which Penly Pro product you bought or started a trial for, when, its price and currency, and whether a subscription is active, renewing or cancelled.
Product interaction: basic app usage such as app opens, sessions and screens viewed, and events in the upgrade flow, for example when the Penly Pro screen is shown or closed, which feature opened it, and whether a purchase was started, completed, cancelled or failed.
Diagnostics: crash reports and technical information such as device model, iOS version, app version, language and performance data.
These items are linked to the random identifier above, so they can be connected to each other. They are not linked to your name, email address or Apple ID.
We do not collect the content of your notebooks, pages, checklists, photos, the letters you draw or the fonts made from them, your contacts or your location.
To run Penly Pro: checking whether Pro is active, unlocking it on your devices and restoring purchases.
To fix problems: finding and fixing crashes and bugs.
To improve the app: understanding, in aggregate, which features are used and how well the upgrade flow works.
We do not use this information for advertising, we do not combine it with data from other companies' apps or websites, and we do not sell or share it with data brokers.
Google Firebase Analytics and Firebase Crashlytics (Google LLC) receive the identifiers, product interaction and diagnostics listed above. See the Firebase privacy information and Google's privacy policy.
RevenueCat (RevenueCat, Inc.) processes App Store purchase and subscription information for Penly Pro and can forward purchase events to Firebase. See RevenueCat's privacy policy.
Apple handles all payments through the App Store. We never receive your name, email, Apple ID or payment details. See Apple's privacy policy.
These providers process data on our behalf and only for the purposes above. Their servers may be located outside your country, including in the United States.
Penly stores the following only on your iPhone or iPad:
Your notebooks, pages, checklists and the photos you attach to pages
The letters you draw or scan and the handwriting fonts built from them
Your settings, such as paper style, ink colour and handwriting size
Fonts are built on your device. Penly's home screen widget reads a small summary of your recent pages from storage shared between the app and the widget on the same device. None of this leaves your device through Penly.
Your device's own iCloud Backup or computer backup may include Penly's data, as it does for most apps. Apple handles those backups under its own privacy policy.
Camera: Penly asks for camera access only when you choose to take a photo for a page or scan your printed handwriting template. Photos are processed on your device and stored only in your notes.
Photo library: When you add a picture to a page, you choose it in the system photo picker. Penly only receives the photos you pick and cannot see the rest of your library.
Saving to Photos: Penly asks to add images to your library only when you choose to save an exported page or a handwriting card.
You can change these permissions at any time in Settings › Penly on your device.
When you share, export or print a page or a card, you choose where it goes, for example Messages, Mail, Files or a printer. That content is then handled by the app or service you chose, under its own privacy policy.
If you email us, we receive your email address and whatever you choose to include, such as the app version and device model that Penly pre-fills in the message. We use this only to answer you, and we do not share it with anyone. You can ask us to delete your emails at any time.
Analytics data is kept for up to 14 months and crash reports for up to 90 days, after which our providers delete them. Purchase records are kept while they are needed to provide Penly Pro and to meet legal and accounting requirements.
Start fresh: deleting Penly removes all of its data from your device. A new random identifier is created if you install it again, and it is not connected to the old one.
Access or deletion: you can ask us to access or delete the information collected about your installation by emailing us (section 12). Depending on where you live, you may have further rights under laws such as the GDPR or CCPA, and you can contact us to use them.
Penly is not directed at children under 13, and we do not knowingly collect personal information from children.
If we change this policy, we will update this page and the effective date above. If a future version of Penly collects new kinds of data, we will update this policy before that version is released.
Questions about this policy? Email us at thuanhoang19362@icloud.com.
Cong Thuan Hoang