The short answer: Wispr Flow is a dictation tool that turns voice into text. Wispr Back is a listening tool that turns text into voice. Despite the similar names, the products are separate and unaffiliated.
Wispr Flow: voice → text. Wispr Back: text → voice.
What Wispr Flow does
Wispr Flow listens while you speak and types the result into the app you are using. Its job is input. You would use it to dictate an email, write a document, fill a text field, or speak a prompt to an AI instead of typing.
Choose Wispr Flow when the friction is getting words out of your head and onto the screen. It saves typing; it is not primarily an app for reading responses back to you.
What Wispr Back does
Wispr Back starts at the opposite end. Select text on your Mac and it turns the important part into speech, or connect a coding agent so completed Claude Code and Codex turns are narrated automatically. Its job is output: helping you listen instead of reading another long answer.
Choose Wispr Back when the friction is consuming text — especially long AI replies, agent debriefs, documentation, and other material you would rather hear while your eyes and hands stay elsewhere.
Side-by-side comparison
Direction — Wispr Flow goes from voice to text. Wispr Back goes from text to voice.
Primary action — With Flow, you speak and the computer writes. With Wispr Back, the computer speaks and you listen.
Best fit — Flow is for dictating messages, documents, prompts, and replies. Wispr Back is for hearing selected text, AI summaries, and coding-agent results.
Problem solved — Flow reduces typing. Wispr Back reduces screen reading.
Relationship — They are not editions of the same product, and neither company operates or endorses the other.
Can you use both together?
Yes. The two tools can form a natural loop: dictate a prompt with Wispr Flow, let the AI answer, listen to that answer with Wispr Back, then dictate your next reply. One handles what goes into the computer; the other handles what comes back.
You do not need both if only one side is slow for you. If typing is the problem, start with a dictation tool such as Wispr Flow. If reading AI output is the problem, start with Wispr Back. If you want a mostly voice-driven workflow, they can be used side by side.