Terms of service
Last updated: October 10, 2026
These terms (the "Terms") govern your use of the Volume Booster — Loud Bass EQ
mobile application for iOS and Android (the "App") and the website at
thevolumebooster.app (the "Site"), provided by
Appcellent Yazılım Hizmetleri A.Ş. ("Appcellent", "we", "us"). The App is free to download and offers
optional paid subscriptions, described in section 3. By installing or using the
App or using the Site you agree to these Terms. If you do not agree, do not use
them.
1. Hearing safety
The App increases the loudness of audio it plays. Listening at high volume, particularly through headphones and particularly for long periods, can cause permanent hearing damage.
Sustained exposure above approximately 85 decibels carries a recognised risk of hearing loss, and the risk rises sharply with level and duration. Keep the volume at a comfortable level, take breaks, and stop if you notice ringing, buzzing or muffled hearing. Do not disable your device's own hearing-protection features without understanding what they do. iOS records your headphone exposure in the Health app under Hearing.
The App is not a medical or safety device. It cannot measure your actual exposure and does not replace advice from an audiologist. You assume all risk associated with the listening levels you choose.
1a. Equipment
Amplified audio can distort at high levels and, on external equipment such as passive speakers, sustained heavy distortion may cause damage. Use the App at levels that sound clean, and reduce the boost if you hear crackling or harshness.
2. License
Subject to your compliance with these Terms, we grant you a personal, limited, non-exclusive, non-transferable, revocable license to download and use the App on devices you own or control, and to view the Site. All intellectual property in the App and the Site remains ours or our licensors'.
3. Subscriptions and billing
The App is free to download. Some features are available only with an optional, auto-renewing subscription. The available plans, their prices and any free trial are shown in the App before you confirm a purchase; prices vary by country.
- Billing. Payment is charged to your Apple ID at confirmation of purchase. All payments are processed by Apple; we never see or handle your payment details.
- Free trial. Where a free trial is offered, it converts automatically to a paid subscription at the end of the trial unless you cancel at least 24 hours before the trial ends. Any unused portion of a free trial is forfeited when you purchase a subscription.
- Automatic renewal. Subscriptions renew automatically at the same price and for the same period unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within the 24 hours before the current period ends.
- Managing and cancelling. You can manage or cancel your subscription at any time in Settings > [your name] > Subscriptions on your iPhone or iPad. Cancellation takes effect at the end of the current billing period. Deleting the App does not cancel a subscription.
- Refunds. Refunds are handled by Apple under its own policies; you can request one at reportaproblem.apple.com. We cannot issue refunds for purchases made through the App Store.
- Google Play. If you subscribe in the Android version of the App, the purchase is billed to your Google Play account and renewals, cancellation (in the Play Store under Payments & subscriptions) and refunds are governed by Google Play's terms and policies.
4. Acceptable use
You agree not to:
- Reverse-engineer, decompile, or attempt to extract source code from the App, except to the extent permitted by applicable law.
- Resell, sublicense, or distribute the App.
- Use the App or Site to violate any law or infringe any right of a third party.
- Interfere with or disrupt the integrity or performance of the App, Site, or any connected service.
5. App Store terms
The App is distributed through Apple's App Store. Apple's standard Licensed Application End User License Agreement also applies to your use of the App. If there is a conflict between these Terms and Apple's EULA, Apple's EULA governs only to the extent necessary to resolve that conflict.
6. Disclaimer of warranties
The App and the Site are provided "as is" and "as available", without warranties of any kind, whether express, implied, or statutory, including warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement. We do not warrant that the App or Site will be uninterrupted, error-free, or free from harmful components.
7. Limitation of liability
To the maximum extent permitted by applicable law, Appcellent and its suppliers will not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of profits, revenues, data, or goodwill arising out of or in connection with your use of the App or the Site, even if advised of the possibility of such damages. Our total liability for any claim relating to the App or the Site will not exceed the amount you paid for the App and any subscription in the twelve months preceding the claim.
8. Indemnification
You agree to indemnify and hold Appcellent harmless from any claim or demand, including reasonable attorneys' fees, arising from your breach of these Terms or your misuse of the App or the Site.
9. Changes
We may update these Terms from time to time. Material changes will be reflected by a new "Last updated" date at the top of the page. Continued use of the App or Site after a change takes effect constitutes acceptance of the updated Terms.
10. Governing law
These Terms are governed by the laws of the Republic of Turkey, without regard to conflict-of-laws principles. Mandatory consumer protections in your country of residence continue to apply.
11. Contact
Appcellent Yazılım Hizmetleri A.Ş., Cumhuriyet Mah., Nilüfer / Bursa, Turkey. Questions about these Terms? Email support@thevolumebooster.app.