Index

Terms of Use - zday

Effective Date: August 4, 2026 Last Updated: August 4, 2026

1. Agreement to Terms

By downloading, installing, or using the zday iPhone application (the “App”), you agree to be bound by these Terms of Use (“Terms”). If you do not agree, do not use the App.

These Terms are a legally binding agreement between you (“you” or “your”) and Ahmet Sina Ustem (“we,” “us,” or “our”), the developer of zday.

2. Changes to Terms

We may modify these Terms. Changes take effect when posted at https://ahmetsina.com/zday/terms, with the “Last Updated” date changed; material changes will also be surfaced in the App.

Continuing to use the App after a change means you accept the updated Terms. If you do not accept them, stop using the App and cancel any active subscription.

3. Description of Service

zday is a voice and video diary that records, transcribes, and organizes personal entries entirely on your device. It:

  • Records audio entries, and video entries if you opt in
  • Transcribes them on-device using Apple’s speech frameworks
  • Derives mood ratings and topic tags on-device
  • Provides a searchable timeline, charts, and full export
  • Offers optional paid features under the name zday Plus

The App has no user account and no server component operated by us.

Free Tier

Recording, transcription, mood and topic tags, search, charts, and full export are free and are not gated. They will remain so.

zday Plus

zday Plus adds Ask (querying your own entries), weekly and monthly recaps, deeper pattern analysis, premium themes, and iCloud Sync across your devices.

4. Purchase Terms

4.1 Plans

zday Plus is available as:

  • Monthly — $4.99 per month, auto-renewing
  • Annual — $29.99 per year, auto-renewing
  • Lifetime — $79.99, one-time purchase, non-consumable
  • Founding Member Lifetime — $49.99, one-time purchase, non-consumable, offered for a limited period

Prices are in U.S. dollars and may differ in other territories based on Apple’s pricing and local taxes.

4.2 Auto-Renewing Subscriptions

  • Payment is charged to your Apple Account at confirmation of purchase.
  • Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period.
  • Your account is charged for renewal within 24 hours prior to the end of the current period.
  • You can manage and cancel subscriptions in iOS Settings → your name → Subscriptions. Deleting the App does not cancel a subscription.
  • Cancellation takes effect at the end of the current paid period; you keep Plus access until then.

4.3 One-Time Purchases

Lifetime purchases are one-time, non-consumable, and tied to your Apple Account. They do not renew and are not billed again. They can be restored on your devices via Restore Purchases.

4.4 Refunds

All purchases are processed by Apple. We cannot issue refunds. Refund requests go to Apple at https://reportaproblem.apple.com, subject to Apple’s policies.

4.5 Price Changes

We may change prices. For auto-renewing subscriptions, Apple will notify you of an increase and, where required, ask for your consent before the next renewal. Existing lifetime purchases are never re-billed.

4.6 If Plus Lapses

Everything you have already recorded remains yours: readable, searchable, and exportable. Lapsing Plus disables Plus-only features going forward; it never deletes, locks, or holds your entries hostage. iCloud Sync stops syncing, and what is already in your iCloud stays in your iCloud.

5. Your Content

Your entries — audio, video, transcripts, notes, moods, and tags — are yours. We claim no ownership, license, or right to use them. We cannot access them. You are solely responsible for what you record and for maintaining your own backups.

6. Acceptable Use

You agree not to:

  • Use the App for any unlawful purpose
  • Record any person without the consent required by the law that applies to you
  • Reverse engineer, decompile, or attempt to extract the App’s source code, except to the extent that applicable law expressly permits it
  • Redistribute, resell, or sublicense the App

You are responsible for complying with the recording, consent, and privacy laws of your jurisdiction.

7. Availability and Device Requirements

The App requires a compatible iPhone running the minimum iOS version stated on its App Store listing.

Some features depend on device capability:

  • Transcription requires Apple’s on-device speech model for your language, which iOS downloads once on first use and which is not available for every language.
  • Entry summaries require Apple Intelligence and a supported device. Where unavailable, the App falls back to Apple’s Natural Language framework and shows no generated summary rather than an invented one.
  • iCloud Sync requires an Apple Account with iCloud enabled and available storage.

These are platform capabilities provided by Apple. We do not warrant their availability, accuracy, or continuity.

8. Intellectual Property

The App, its name, design, and all of its content and functionality are owned by Ahmet Sina Ustem and protected by copyright and other laws. These Terms grant you a limited, personal, non-exclusive, non-transferable, revocable licence to use the App on Apple devices you own or control, consistent with the App Store Terms of Service.

9. Disclaimer of Warranties

THE APP IS PROVIDED “AS IS” AND “AS AVAILABLE,” WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

We do not warrant that the App will be uninterrupted or error-free, that transcription will be accurate, or that mood and topic analysis will be correct. zday is a diary, not a medical device. It provides no diagnosis, treatment, or clinical assessment, and is not a substitute for professional mental health care. If you are in distress, contact a qualified professional or your local emergency service.

10. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF DATA, ENTRIES, RECORDINGS, OR PROFITS, ARISING OUT OF YOUR USE OF THE APP.

OUR TOTAL LIABILITY SHALL NOT EXCEED THE AMOUNT YOU PAID FOR THE APP IN THE TWELVE MONTHS PRECEDING THE CLAIM, OR $50, WHICHEVER IS GREATER.

Because your data lives on your device and, at your option, in your own iCloud, you are responsible for backing it up. Use the App’s export feature. We cannot recover data we never had.

Some jurisdictions do not allow certain exclusions or limitations, so parts of this section may not apply to you.

11. Termination

You may stop using the App at any time by deleting it. We may terminate this licence if you materially breach these Terms. On termination, your local data remains on your device until you delete it; sections 5, 8, 9, 10, and 12 survive.

12. Governing Law and Disputes

These Terms are governed by the laws of the United States and the State of California, without regard to conflict of law principles.

You agree to resolve disputes individually and waive any right to participate in class or collective proceedings, to the extent permitted by law.

13. Apple-Specific Terms

These Terms are between you and us, not with Apple. Apple is not responsible for the App or its content.

  • Apple has no obligation to furnish maintenance or support for the App.
  • If the App fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price; to the maximum extent permitted by law, Apple has no other warranty obligation.
  • Apple is not responsible for addressing any claim relating to the App, including product liability, regulatory non-compliance, or consumer protection claims.
  • Apple is not responsible for investigating, defending, or resolving any third-party claim that the App infringes intellectual property rights.
  • Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.
  • You represent that you are not located in a country subject to a U.S. Government embargo or designated as terrorist-supporting, and that you are not on any U.S. Government restricted-parties list.

14. Contact

Questions about these Terms: asend.ustem@gmail.com