There's an old PDA/smartphone operating system named "Palm OS". It's included with PalmPilot, Palm, Visor, Tungsten, Zire, Treo, and Centro devices.
One of the apps which comes with a Palm OS device is called "Memo Pad" or "Memos". It synchronizes with desktop PIM software such as Palm Desktop or J-Pilot.
On my Palm Treo, in my Memos app, there are about 2200 memos. They're all plain text. Some of the memos hold dozens of kilobytes of text. In total, my MemosDB-PMem file is 6.5 megabytes. I still use the Memos app regularly.
I think I'd eventually like to migrate all memos over to Android.
Evernote is nice, but as Wikipedia writes: "The service has experienced several cases of losing customer data."
Also, the free version of Evernote for Android doesn't work so well during times when you're offline. It works better if you pay for a monthly Evernote Plus subscription.
Finally, I know that Evernote supports file attachments, voice memos, photos, and other bells and whistles. But I don't need these features.
I think I'd rather use Simplenote, which I hear works well for plain-text memos.
How can I migrate my Palm OS memos over to Simplenote?
[Edit: To learn about one possible solution, see my comment below.]