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Terms of Service

Last updated: November 13, 2026

These Terms of Service (the “Terms”) govern your use of the Syncfony mobile application (the “App”) and the website syncfony.com. The App is provided by Cyberex s.r.o., Květná 2080/10, 130 00 Praha 3 – Vinohrady, Czech Republic, Company ID: 07418256 (“we”, “us”), contact: support@syncfony.com.

By downloading, installing or using the App, you agree to these Terms. If you do not agree, do not use the App. If you use the App on behalf of a company, you confirm that you are authorized to accept these Terms for it.

  1. The App
  2. Eligibility and licence
  3. Acceptable use
  4. Free version and Premium
  5. Backup, export and restore
  6. Your data and privacy
  7. Disclaimer and limitation of liability
  8. Changes and termination
  9. Governing law and disputes
  10. Contact

1. The App

Syncfony is an Android app that works with the call log, text messages and contacts already stored on your phone. It lets you:

  • see statistics of your calls and messages per contact and per group,
  • organize contacts into groups,
  • back up your calls, messages, contacts and groups to CSV files,
  • restore calls and messages from those CSV files to your phone.

The App processes your data on your phone. It has no user accounts and does not upload your calls, messages or contacts to us. How the App handles your data is described in the Privacy Policy.

The statistics are calculated from the data on your phone and are provided for your information only. Their accuracy depends on what your phone and your network operator record.

2. Eligibility and licence

You must be at least 16 years old to use the App.

We grant you a personal, non-exclusive, non-transferable and revocable licence to install and use the App on Android devices you own or control, in line with these Terms and the Google Play Terms of Service. The App, its design, code, texts and graphics, and the Syncfony name and logo belong to us or our licensors. Except for this licence, no rights are transferred to you.

You provide and pay for your own device, internet and mobile service.

3. Acceptable use

You may use the App only with data you are entitled to access. You must not:

  • use the App to access, back up or restore another person’s calls or messages without their permission or other legal basis,
  • copy, modify, sell, rent, sublicense or distribute the App,
  • decompile, reverse engineer or try to obtain the App’s source code, except where the law allows it,
  • bypass or disable licence checks or Premium restrictions,
  • use the App in a way that breaks the law or harms others.

If you break these Terms, your licence to use the App ends automatically.

4. Free version and Premium

The App is free to download. The free version shows statistics for the last 30 days and lets you create one group. Syncfony Premium adds backup and restore of calls and messages (CSV export and restore), unlimited history and unlimited groups. The current features and prices are shown in the App and on Google Play.

Premium is sold through Google Play as:

  • a yearly subscription, which may start with a free trial. It renews automatically for another year unless you cancel it at least 24 hours before the end of the current period. If you cancel during a free trial, you will not be charged.
  • a one-time lifetime purchase, which unlocks Premium on devices signed in with the same Google account, for as long as the App is available.

Payments, renewals, cancellations and refunds are handled by Google under the Google Play Terms of Service. You can manage or cancel your subscription in Google Play. We do not receive your payment card or billing details. Refunds are provided under Google Play’s refund policies and as required by law.

If a subscription ends or is cancelled, the App returns to the free version. Your data on your phone is not deleted. We may change Premium features or prices in the future; a price change does not affect a period you have already paid for, and Google Play will inform you before a new price applies to your subscription.

5. Backup, export and restore

Backups are CSV files created on your phone when you ask for them. You decide where to save or share them, and you are responsible for keeping them safe. The files contain the full text of your messages and are not encrypted by the App.

When you restore messages, Android requires the App to be your default SMS app for the time of the restore. During that time:

  • incoming SMS are saved to your phone as usual,
  • the App cannot download MMS, so an MMS that arrives during the restore is not saved and may be lost. We recommend turning on airplane mode before the restore and switching back to your usual SMS app before you turn it off.

After the restore, switch back to your usual SMS app; the App reminds you and opens the settings for you. Calls and messages already on your phone are skipped and existing records are not changed.

Restore works only with CSV files created by the App in their original format. We cannot guarantee a complete restore if a file has been edited, is damaged, or comes from a different phone model, Android version or network operator. Keep your original backup files until you have checked the result.

6. Your data and privacy

Your call log, messages and contacts stay on your phone and remain yours. We do not collect them, and the App does not use analytics or advertising services. Details are in the Privacy Policy, which forms part of these Terms.

The App relies on Android features and on permissions you grant. If you revoke a permission, the related features stop working.

7. Disclaimer and limitation of liability

The App is provided “as is” and “as available”. We work to keep it reliable, but we do not guarantee that it will be error-free, uninterrupted, compatible with every device, or that its statistics will be complete and accurate. You are responsible for keeping backups of your data and for checking the result of a restore.

To the extent permitted by law, we are not liable for:

  • loss or corruption of calls, messages or other data, including MMS received during a restore,
  • indirect or consequential damage, such as lost profit or business,
  • damage caused by your device, Android, your network operator, Google Play or other third-party services,
  • damage caused by use of the App contrary to these Terms.

Our total liability is limited to the amount you paid for Premium in the 12 months before the event that caused the damage.

Nothing in these Terms limits liability that cannot be limited by law, such as liability for damage caused intentionally or by gross negligence, or your statutory rights as a consumer, including rights for defective digital content.

8. Changes and termination

We may update the App, change or remove features, or stop providing it. If we stop providing the App, we will try to tell you in advance; your data on your phone and your backup files remain yours.

We may update these Terms. The current version is published at https://syncfony.com/terms-of-service/ with its date. We will inform you about material changes in the App or on the website before they take effect. If you continue to use the App after the changes take effect, you accept the updated Terms.

You can stop using the App at any time by uninstalling it. Uninstalling does not cancel a Premium subscription; cancel it in Google Play.

9. Governing law and disputes

These Terms are governed by the laws of the Czech Republic. If you are a consumer, you also keep the protection of the mandatory laws of the country where you live. Disputes will be decided by the competent courts of the Czech Republic, unless the law gives you as a consumer the right to bring a claim in your home country.

Consumers in the Czech Republic can also resolve a dispute out of court through the Czech Trade Inspection Authority (coi.cz).

If any provision of these Terms is found invalid, the rest of the Terms remain in effect. If we do not enforce a provision, we do not waive our right to do so later.

10. Contact

If you have questions about these Terms, contact us at support@syncfony.com or write to Cyberex s.r.o., Květná 2080/10, 130 00 Praha 3 – Vinohrady, Czech Republic.