What I Love:

The cost for YouTube summarization services on the market is typically quite high, making this option remarkably affordable. I processed around 200 YouTube clips in the first two days, providing a wealth of concise, easy-to-read content (especially helpful as I have difficulty with listening and prefer reading).
The answers to questions derived from the content library are accurate and include references to their sources. This feature builds a strong sense of trust and confidence in the responses.
The web link processing feature performs reliably as well. I tested it with about 100 links, which were processed effectively, greatly aiding my research.
The eBook and document processing functions work smoothly, which I appreciate.

Areas for Improvement:

There is a limitation on the number of content items per batch—64 YouTube links can be added at once, with a pause required before uploading more. While I understand the high processing costs, it would be beneficial to allow for a queue or delayed processing to avoid the inconvenience of returning every few hours to add more content.
Another limitation is the 100-page cap per document. Most eBooks exceed this length, and although a file size limit of 10-20 MB per document is reasonable, the 100-page restriction can be frustrating. Splitting a 200-300-page book into multiple sections could disrupt the context between parts.
I would also appreciate a feature for crawling links up to 1-2 levels deep or adding links dynamically. This could prevent context shifts among related links and save time versus adding each page manually, especially when working with multi-page documents.
A chat feature within memo groups would be incredibly useful. With hundreds of memos, some contain ideas that may conflict with each other. I'd prefer to communicate with a specific memo or group instead of inputting all data and receiving generalized responses.

In summary, Memo Cast is a fantastic tool. I only wish I had more control over what to cast and could manage timing and casting methods more flexibly.
-- My english is so bad that I have ChatGPT to re-write the review in better form for me :D --
p/s: By the limitation, I find it's good-for-nothing if I'd add more code in. But before and after this, I always hope to go to plan 3 codes as I really like this tool :)