Fishdom is free to play, though certain in-game elements can be purchased for real money. To avoid accidental in-app purchases, just adjust your device settings.

For iOS devices:
1. Go to Settings on your device -> General -> Restrictions.
2. Choose Enable Restrictions.
3. Enter a password for the Restriction option and confirm it. We recommend choosing a combination that differs from the one you use to unlock your device.
4. Once you enable restrictions, you will see a list of the apps and actions that are permitted on your device. To restrict in-app purchases, turn off the appropriate option.

If you don't want to restrict in-app purchases completely, you can adjust the password settings for them. Make sure your restrictions are disabled and go to device settings -> App Store, iTunes Store -> Password Settings.

For Android devices:
1. Open the Play Store app.
2. Tap the Menu icon and select Settings.
3. Tap Require authentication for purchases.
4. Select one of the authentication options.
- For all purchases through Google Play on this device. Authentication will be required for all Google Play purchases (including in-app purchases).
- Every 30 minutes. The system will request the password for Google Play purchases every 30 minutes. Just note that once you enter a password all purchases made over the following 30 minutes will not need a password.
5. Follow the instructions on the screen.

For Kindle devices:
1. Open the Amazon Appstore application.
2. Go to Menu -> Settings.
3. Untick the In-app Purchasing option.

For Samsung devices with the Galaxy Store:
1. Open the Galaxy Store app.
2. Open the menu by tapping on the icon with three horizontal lines in the lower right corner.
3. Open Settings by tapping on the gear icon.
4. Toggle the slider beside Require password/biometrics for purchase to enable protection against accidental purchases.

For Huawei devices with the AppGallery Store:
1. Open your device Settings.
2. Tap on HUAWEI ID.
3. Tap on Account center.
4. Tap on Payment and purchases.
5. Tap on Settings.
6. Set your Payment password to enable protection against accidental purchases.

For Microsoft devices with Windows 10:
1. In the Microsoft Store app, select More in the upper right corner of your screen and choose Settings.
2. Under Purchase sign-in, turn off I want to buy without a password, for faster checkout.
3. Repeat these steps for each of your devices.

For Microsoft devices with Windows 11:
1. In the Microsoft Store app, select Profile in the upper right corner of your screen and choose App settings.
2. Turn off Purchase sign-in
3. Repeat these steps for each of your devices.