Can i use another speech to text with iPhone?

There are certainly other options in the App Store you could try. Whether any of them are actually better than what is already built into your iPhone I don't know. Here is a review of some, which are recommended --> https://www.semantix.com/resources/blog/speech-to-text-apps-iphone

TheLittles wrote:

"Can i use another speech to text with iPhone?: When I speak siri is randomly accurate. Is there another app"

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Randomly-Accurate Speech with Siri:

Not certain what you mean by "speech". Looking to use a second language with Siri? So, when you need to use a different language, change the language through Settings. Go here: Change Siri Voice or Language - Apple Support

No, they aren't asking about another language. They are looking for alternative apps from the messages app, which offers speech to text. The link I provided offers some recommendations.

"Can i use another speech to text with iPhone?: When I speak siri is randomly accurate. Is there another app"

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Randomly-Accurate Speech with Siri:

Not certain what you mean by "speech". Looking to use a second language with Siri? So, when you need to use a different language, change the language through Settings. Go here: Change Siri Voice or Language - Apple Support

Do you not know what "speech to text" means?

Speech-to-text, also known as speech recognition or computer speech recognition, is software that converts spoken language into text using computational linguistics.