why do my notes apps keep crashing on my iphone 4s plaese help

Hi titanAE20,

Welcome to Apple Support Communities.

If the Notes app is quitting unexpectedly, you may find some of the suggestions in these links useful:

Using apps on your iPhone

http://www.apple.com/support/iphone/assistant/application/

iOS: Troubleshooting applications purchased from the App Store

http://support.apple.com/kb/ts1702

If the steps prior to "Reinstall the affected application" don't solve it, see this article:

iTunes: Restoring iOS software

http://support.apple.com/kb/ht1414

Have a good day,

Jeremy

Make sure that if you have notes sync enabled (via iCloud, Google, etc) that it temporarily turned off.

To do so, on your iPhone navigate to Settings > iCloud and toggle the Notes switch from ON to OFF. If your notes are synced via Gmail or anther cloud service, go to Settings > Mail, Contacts, Calendars > tap on the respective account and make sure to toggle the Notes switch from ON to OFF.

Next, ensure that your Notes default account is set to "On My iPhone". To do so, go to Settings > Notes > Default Account > On My iPhone.

Finally, restart your iPhone as per these instructions:

Restart iPhone

my iphone 4s has notes crashing when i scroll down about 10 notes. Done all thet you said, yet after complete system restore and a couple of months, they will scroll-crash like always. Annoying problem for the past year or more.

Iphone tech says manually email all the notes , delete them all, and re-paste them all. But this ruins the dates they were made.