Day Press Privacy Policy

1. Who we are

MODUMWORKS ("we", "us") provides the mobile app Day Press (called 하루편집실 in Korean and ひとひ編集室 in Japanese; the "App"). We are the controller of the limited information described here.

You can open this policy any time from Settings → Help → Privacy Policy in the App and from each store's app page.

2. What we handle and where it lives

There is no account system. We don't collect information that directly identifies you, such as your name, date of birth, contact details or email address.

3. Why we use it

• To let you write, publish and keep your diary — binding your pieces into the day's issue and showing them in the calendar, shelf and bound volumes (performance of our contract with you)
• Backup and sync across devices — only if you turn it on, to keep and restore your diary in your own storage (contract)
• Editor's proofread — only if you turn it on, to find typos and spelling mistakes in the issue you're closing (your consent)
• Showing ads — to keep the App free (free version; personalized ads only with your consent)
• Improving the App (usage analytics) — to learn which features are actually used and where people get stuck, so we can fix it
• Paid features — to check your purchase and unlock Pro (contract)
• Reminders — to remind you at the times you choose (processed on your device only)

We don't use your information for anything else, and we'll ask for your consent before using it for a new purpose.

4. Information that stays on your device

• Your pieces, photos, issues, print and letter records and settings are saved in the storage area your operating system isolates and protects for each app.
• Today's page on the home-screen widget is passed through an App Group shared container on the same device. It never leaves the device.
• Camera filters, PDF binding and share images are all processed on your device.
• The app lock (Face ID, Touch ID, fingerprint or face unlock) uses your operating system's biometric authentication. The App never receives or stores biometric data — only whether unlocking succeeded.

Deleting the App deletes this information. If you turned on auto sync, the cloud backup remains (see §5 and §13).

5. Backup and sync (your own storage)

• For Google Drive we request only the drive.appdata scope. The App can access only the hidden folder it created and can't see your other documents or photos.
• If Pro ends, auto sync simply pauses. We never delete your pieces or your cloud copy.
• "Erase everything and start over" in the App clears this device only. See §13 to delete your cloud copy.

6. Editor's proofread (optional · AI)

Editor's proofread is off by default. The first time you turn it on, we explain what will be sent and ask for your consent.

• The text passes through our proofreading server (Cloudflare Workers) to Claude by Anthropic PBC, and only a list of suggested fixes comes back.
• We don't store the text. Our server logs contain only counts (number of pieces and fixes). To avoid proofreading the same issue twice, the server keeps only the install ID and issue date, for up to 30 days.
• Anthropic does not use API content to train its models and deletes it within the period set by its policies.
• Proofreading results are suggestions only. You decide whether to accept them, and you can turn the feature off in Settings at any time.

7. The sample press

When you open the sample press, the App downloads the list of samples and their stories (text and photos) from our server. The only thing it sends is your language — never your own pieces. The sample press is read-only and has no ads.

8. Advertising (Google AdMob)

To keep the App free, we show ads through Google AdMob, provided by Google LLC. There are only two kinds of ads:

• Banner ad — shown at the bottom of the Calendar, Cover, Shelf and Settings screens, just above the tab bar (at the bottom of the screen on iPad). It's hidden while the writing sheet or a dialog is open.
• Full-screen ad — shown first, across the whole screen, when you open the writing sheet (new piece, past day, addendum or edit). It appears without asking first; close it with the close button that appears after a moment, and the writing sheet opens. If you've just seen an ad, we won't show another one for a little while. If an ad can't load (for example, offline), the writing sheet opens right away — an ad will never keep you from writing. Ads are muted.

• Consent — In the European Economic Area, the UK and other regions where consent is required, we first show Google's consent form (UMP). On iOS, before using the advertising identifier (IDFA), we ask for Apple's App Tracking Transparency (ATT) permission. If you decline, we request only non-personalized ads that don't use the identifier.
• Android — Your advertising ID is managed by Google Play services. You can delete or reset it in Settings → Google → Ads (or Privacy → Ads).
• We don't collect or keep advertising identifiers ourselves and never try to identify you by combining them with other information. Your pieces and photos are never used for ads. We do not sell your personal information.
• With Pro, there are no banners or full-screen ads, and we don't even request ads.
• When the App runs in a store's automated test environment, it doesn't request ads.

How Google uses data for ads: How Google uses information from sites or apps that use its services · Google Privacy Policy

9. In-app purchases

• Payments are handled entirely by the App Store and Google Play. Card and billing details are never passed to the App; it receives only the product and whether the purchase succeeded.
• Your purchase status is written to a single file on this device and is never included in backups or sync. On a new device, use the store's Restore Purchases. We don't keep a purchase database.
• Subscription terms, cancellation and refunds are in the Terms of Use.

10. How long we keep it

11. Sharing, service providers and international transfers

We don't sell or give your personal information to third parties. We may cooperate with a lawful request under applicable law, but since we don't keep your diary, there's no diary for us to hand over. To run the service, we use the following providers, some of which are located outside your country.

12. App permissions

We never request or use location, contacts, microphone or call log permissions. You can revoke permissions any time in your device settings.

13. Your rights and choices

You can ask to access, correct, delete or restrict your information and withdraw consent at any time. Most of this you can do yourself, in the App.

• Access, correct, delete — Your pieces are right there in the App; edit or delete them any time. Settings → Erase everything and start over removes all pieces, photos and settings from this device.
• Export — Create a backup file (.haru) in Settings → Backup.
• Delete your cloud backup — iOS: Settings → [your name] → iCloud → Manage Storage → Day Press / Google Drive: drive.google.com → Settings → Manage apps → Day Press → Delete hidden app data.
• Withdraw consent — Turn off Editor's proofread, auto sync or reminders in Settings. Change ad tracking in iOS Settings → Privacy & Security → Tracking or Android Settings → Google → Ads.
• Install ID on the proofreading server — deleted automatically within 30 days; email us if you'd like it removed sooner.
• Usage analytics — Deleting the App stops collection from that install, and what's been collected is deleted automatically after at most 14 months. If you don't allow tracking on iOS, the advertising identifier isn't used for analytics either; on Android you can reset or delete your advertising ID in Settings → Google → Ads. Email us if you'd like it deleted sooner.

Send any request to contact@modumworks.com and we'll handle it promptly. If you're in the EEA or UK, you also have the right to complain to your local data protection authority.

14. Children

The App is not directed to children under 13 (or the minimum age in your country), and we don't knowingly collect children's personal information. Because we don't collect diaries, nothing a child writes is stored by us. If a minor buys Pro without a parent's consent, the parent can request a cancellation through the store.

15. Security

• Minimal collection — no accounts, and no server that stores diaries.
• Minimal permissions — only the app-only cloud folder, and only the photos you pick.
• Encryption in transit — all network traffic uses HTTPS (TLS).
• On-device isolation and lock — your diary lives in an OS-isolated area, and you can turn on the app lock and hide the App in the app switcher.
• Proofreading server — never stores text, and logs only counts.

16. Contact

17. Usage analytics (Google Analytics)

To learn which features are actually used and where people get stuck, we use Google LLC's Google Analytics for Firebase. Your diary never goes there.

We don't use analytics to identify you; it's used only for analysis, kept for up to 14 months, then deleted automatically. The App itself only lets short English-letter codes through as values, so sentences in Korean, Japanese or any language can't end up in analytics.

How Google handles it: Google Privacy Policy · Privacy and Security in Firebase

18. Changes to this policy

If we change this policy, we'll let you know on this page or in the App at least 7 days before it takes effect (30 days for changes that are less favorable to you).

• v1.1 — October 10, 2026: added usage analytics (Google Analytics for Firebase, §17) — revised before launch
• v1.0 — Effective October 10, 2026