Last updated: 16 August 2026

Terms of Use

🐾 The short version. Zerdava is free, has no account and no subscription. It reads your dog’s sounds for fun and for gentle observation — it is not a veterinary tool and it does not diagnose anything.

1. Agreement

By installing or using Zerdava ("the app") you agree to these terms. The app is provided by heyisoft. If you do not agree, please do not use the app.

2. What the app is

Zerdava records a dog vocalisation, measures its acoustic properties on your device, and shows which context that sound most resembles, together with a confidence figure. It also lets you keep a diary and play real recorded dog calls back to your dog.

3. What the app is not

Not a translator in the literal sense. No one can turn a bark into a sentence. The app maps acoustics onto contexts observed in research, and it tells you when it is unsure instead of guessing.
Not a veterinary or medical device. It does not diagnose, treat or rule out any condition. The "health radar" only flags shifts from your dog’s own usual pattern.
Not a substitute for a vet. If your dog seems unwell, contact a veterinarian. Never delay veterinary care because of something this app showed you.

4. Your responsibilities

Use the app on your own dog, considerately. Stop playing sounds if your dog seems stressed or agitated.
Do not use the app to record people without their knowledge.
Do not attempt to reverse-engineer, resell or redistribute the app or its bundled sound library.

5. Price

The app is currently free, with no advertising and no in-app purchases. If that ever changes, it will be announced in the app and on this page before it takes effect, and anything you already have will keep working.

6. Content and licences

The dog sounds bundled with the app come from openly licensed Freesound recordings (CC0 and CC BY 3.0/4.0) and are credited clip by clip inside the app, under Settings → Sound sources, and in our Privacy Policy. The app itself, its design, text and model remain the property of heyisoft.

7. Availability

We aim to keep the app working but we do not guarantee uninterrupted availability, and operating-system updates may temporarily break things. We may change or discontinue features.

8. Disclaimer and liability

The app is provided "as is", without warranties of any kind, express or implied, including fitness for a particular purpose. To the fullest extent permitted by law, heyisoft is not liable for any indirect, incidental or consequential damages arising from your use of the app, including any decision you make about your dog’s health. Nothing here limits liability that cannot be limited by law, including for death or personal injury caused by negligence.

9. Governing law

These terms are governed by the laws of the Republic of Türkiye, without prejudice to any mandatory consumer protections available to you where you live.

10. Changes

We may update these terms as the app evolves. Material changes will be reflected here with a new "last updated" date.

11. Contact

heyisoft · heyisoft@gmail.com · Contact & Support