Bittersweet Last Updated: August 4, 2026 Effective Date: August 4, 2026
Please read these Terms of Service (“Terms”) carefully before using the Bittersweet mobile application (“App”) operated by Peijun Wu (“Jasper Wu”), an individual (“we,” “us,” or “our”).
By downloading, installing, or using the App, you agree to be bound by these Terms. If you do not agree, do not use the App.
You must be at least 13 years of age to use this App. If you are under 18, you represent that your parent or legal guardian has reviewed and agreed to these Terms on your behalf. We do not knowingly collect personal information from children under 13.
Bittersweet is a focus timer and productivity app that allows you to:
You may use the App without creating an account. Certain features, including cloud sync and social features, require you to sign in using Apple Sign-in or Google Sign-in. By signing in, you authorize us to access and store limited information from your Apple or Google account (email address, name) for account creation purposes.
You are responsible for maintaining the security of your device and your sign-in credentials (Apple or Google). We are not liable for any loss arising from unauthorized access to your account.
You may delete your account at any time through the App’s settings. Upon deletion:
Grove is an entirely optional social feature. You must explicitly create a Grove profile to participate. You are not required to use Grove to access the core features of the App. You choose whether your profile is public (discoverable by, and visible to, anyone) or private (visible only to friends whose requests you have accepted).
When using Grove, you may share focus session data, notes, photos, and other content (“User Content”) with friends and group members. You retain ownership of your User Content. By sharing User Content through Grove, you grant us a non-exclusive, royalty-free license to transmit, store, and display that content to other users in accordance with your privacy settings.
There is zero tolerance for objectionable content or abusive behaviour in Grove.
You agree not to:
Every Grove profile can be reported and blocked from the account’s session feed, via the options menu in the top-right corner.
We review reported content and act on it within 24 hours of receiving the report — removing content, and suspending or terminating the account responsible where warranted. We may suspend or terminate your Grove profile at any time if you violate these Terms.
You control what is shared through Grove via your privacy settings, including whether your profile is public or private and whether your live focus status is shown. When you participate in Grove, your focus session summaries (including tags and notes) are shared with your accepted friends, and with everyone if your profile is public. We encourage you to review these settings regularly.
The App offers a premium subscription that unlocks additional features. Subscriptions are billed through Apple’s App Store on a recurring basis (monthly or yearly).
You can manage or cancel your subscription at any time through your Apple ID account settings or the App Store. Cancellation takes effect at the end of the current billing period.
All purchases are processed by Apple. Refund requests must be directed to Apple in accordance with their refund policy. We do not process refunds directly.
“Fruits” and other in-app rewards are virtual items with no monetary value. They cannot be exchanged for cash or redeemed outside the App. Fruit balances themselves cannot be transferred between users; however, Grove users may create custom “gift” rewards for their friends, which the recipient redeems using their own fruits. We reserve the right to modify, limit, or discontinue the rewards system at any time.
The App and its original content, features, and functionality (excluding User Content) are and will remain the exclusive property of Peijun Wu and their licensors. The App is protected by copyright, trademark, and other laws. You may not copy, modify, distribute, or create derivative works based on the App.
Your use of the App is also governed by our Privacy Policy, which describes how we collect, use, and protect your information. Key points include:
The App may request access to device features including:
You can revoke these permissions at any time through your device settings.
THE APP IS PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
We do not warrant that:
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL PEIJUN WU OR THEIR AGENTS OR AFFILIATES BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING WITHOUT LIMITATION LOSS OF DATA, GOODWILL, OR OTHER INTANGIBLE LOSSES, RESULTING FROM:
You agree to defend, indemnify, and hold harmless Peijun Wu and their affiliates from and against any claims, damages, obligations, losses, and expenses arising from your use of the App or violation of these Terms.
We reserve the right to modify these Terms at any time. We will notify you of material changes by updating the “Last Updated” date and, where practical, through in-app notification. Your continued use of the App after changes are posted constitutes acceptance of the revised Terms.
We may terminate or suspend your access to the App at any time, without prior notice, for conduct that we believe violates these Terms or is harmful to other users, us, or third parties. Upon termination, your right to use the App ceases immediately.
These Terms shall be governed by and construed in accordance with the laws of the State of California, United States, without regard to its conflict of law provisions.
Any disputes arising from these Terms or the App shall first be attempted to be resolved through informal negotiation. If unresolved within 30 days, either party may pursue resolution through binding arbitration in accordance with the rules of the American Arbitration Association, conducted in California, United States.
If any provision of these Terms is found to be unenforceable or invalid, that provision will be limited or eliminated to the minimum extent necessary, and the remaining provisions will remain in full force and effect.
These Terms, together with the Privacy Policy, constitute the entire agreement between you and Peijun Wu regarding your use of the App and supersede any prior agreements.
The following terms are required by Apple Inc. (“Apple”) for applications licensed through the App Store. To the extent anything in this section conflicts with the rest of these Terms, this section controls with respect to your use of the App on Apple devices.
Acknowledgement. These Terms are concluded between you and Peijun Wu only, and not with Apple. We, not Apple, are solely responsible for the App and its content.
Scope of License. The license granted to you for the App is a non-transferable license to use the App on any Apple-branded device that you own or control, and as permitted by the Usage Rules set forth in the Apple Media Services Terms and Conditions, except that the App may be accessed and used by other accounts associated with you via Family Sharing or volume purchasing.
Maintenance and Support. We are solely responsible for providing any maintenance and support services for the App, as specified in these Terms or as required under applicable law. Apple has no obligation whatsoever to furnish any maintenance and support services for the App.
Warranty. We are solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed. In the event of any failure of the App to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price of the App to you, if any. To the maximum extent permitted by applicable law, Apple will have no other warranty obligation whatsoever with respect to the App, and any other claims, losses, liabilities, damages, costs, or expenses attributable to any failure to conform to any warranty will be our sole responsibility.
Product Claims. We, not Apple, are responsible for addressing any claims by you or any third party relating to the App or your possession and/or use of the App, including: (i) product liability claims; (ii) any claim that the App fails to conform to any applicable legal or regulatory requirement; and (iii) claims arising under consumer protection, privacy, or similar legislation, including in connection with the App’s use of the HealthKit framework.
Intellectual Property Rights. In the event of any third-party claim that the App or your possession and use of the App infringes that third party’s intellectual property rights, we, not Apple, will be solely responsible for the investigation, defense, settlement, and discharge of any such claim.
Legal Compliance. You represent and warrant that (i) you are not located in a country that is subject to a U.S. Government embargo, or that has been designated by the U.S. Government as a “terrorist supporting” country; and (ii) you are not listed on any U.S. Government list of prohibited or restricted parties.
Developer Contact. Any questions, complaints, or claims with respect to the App should be directed to the contact address in Section 20 below.
Third-Party Terms. You must comply with any applicable third-party terms of agreement when using the App.
Third-Party Beneficiary. You acknowledge and agree that Apple and Apple’s subsidiaries are third-party beneficiaries of these Terms, and that upon your acceptance of these Terms, Apple will have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary.
If you have questions about these Terms, please contact us at:
Peijun Wu (Jasper Wu) Email: junxwoo@icloud.com