If the Ayar app is not downloading, follow these detailed steps to troubleshoot and resolve the issue effectively:

1. Check Your Internet Connection:
- Ensure you have a stable and strong internet connection, whether via Wi-Fi or mobile data. If possible, switch to a different network to see if that resolves the issue. A weak connection can impact app downloads significantly.

2. Restart Your Device:
- Restart your iPhone. Power it off and turn it back on. This can help clear temporary glitches that may be affecting app downloads.

3. Check Available Storage:
- Go to Settings > General > iPhone Storage. Ensure you have enough available storage on your device. If storage space is full, you may need to delete some apps or files to make room for the new app.

4. Update iOS:
- Make sure your iOS is up to date. Go to Settings > General > Software Update to check if there are any available updates. Keeping your device updated can solve many issues related to app installations.

5. Clear App Store Cache:
- Open the App Store, tap on any of the tabs (like Featured, Top Charts, etc.) ten times in quick succession. This can help refresh the App Store and may resolve download issues.

6. Sign Out and Back into Your Apple ID:
- Go to Settings > [Your Name] > Media & Purchases and tap Sign Out. After signing out, wait a moment, then sign back in. This can sometimes resolve download issues.

7. Reset Network Settings:
- Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. Note that this action will remove all saved Wi-Fi passwords, so you will need to reconnect to Wi-Fi networks afterward.

8. Try Downloading Again:
- After completing the above steps, try downloading the Ayar app again. Open the App Store, search for "Ayar," and initiate the download.

9. Contact Support:
- If the app still doesn't download, consider reaching out to Apple's support or the Ayar app support team for further assistance.

By following these steps, you should be able to resolve the issues preventing the Ayar app from downloading successfully - learn more - learn more - learn more.