The biggest privacy question in dictation is simple: does your recording stay on your device, or is it sent away to become text?
For Mac and iPhone users, KeyVox gives a clear answer. It turns speech into text on the device. Wispr Flow sends recordings to its cloud service for transcription and offers controls around how that service handles data.
If keeping recordings on your own device matters to you, that difference puts KeyVox in a strong position from the start. The questions below cover the other details worth checking.
Do you want audio to leave the device for transcription?
This is the core difference.
With local dictation, your Mac or iPhone turns the recording into text. With cloud dictation, the recording is sent to another company's computers to become text.
KeyVox handles that work on your device. It does not send recordings to a server for transcription during normal dictation.
Wispr Flow explains its remote processing and available controls on its official privacy page and data-controls page. Privacy Mode controls whether data may be used for training and evaluation. Private Cloud Sync is the separate control for server storage. Transcription still happens through the cloud.
If “the recording should never be uploaded for transcription” is a hard requirement, that difference may decide the comparison immediately.
Which devices must the same tool support?
Where you can use the app matters too.
KeyVox is built for Mac and iPhone, giving people in the Apple world one familiar local-first tool on both devices. Wispr Flow supports Mac, Windows, iPhone, and Android in beta, according to its supported devices documentation.
The mobile experiences are different. Flow uses a keyboard on iPhone, while its Android beta uses the Flow Bubble accessibility overlay, as shown in its official workflow guide.
If your writing happens on a Mac and iPhone, KeyVox covers both without sending your recordings to a transcription service. If Windows or Android is required, Flow offers those additional platforms with cloud transcription.
Do you need dictation without a reliable connection?
Once KeyVox finishes its initial setup, dictation runs locally and can work without an internet connection.
Cloud transcription needs a working path to the service. That can be perfectly reasonable at a desk with dependable internet. It is less comfortable on a flight, during a connection problem, or in a place where sending audio is not appropriate.
Ask where you actually dictate, not where the product screenshot was taken.
Are you choosing for yourself or a company?
Individual and organizational buying decisions are different jobs.
A person may care most about private dictation, no account, offline use, and avoiding another subscription. A company may also need shared controls for many employees.
Wispr Flow offers business and enterprise plans for organizational use. KeyVox gives Mac and iPhone users private, on-device dictation without an account or subscription.
For an individual using Mac and iPhone, KeyVox keeps the experience simple and private.
Do you want an account-connected service?
Wispr Flow's setup includes creating or signing into an account, as shown in its official setup guide. That account supports the service model and connected features.
You do not need to create an account to dictate with KeyVox. Your custom dictionary and selected preferences can sync separately through your iCloud account.
KeyVox keeps the relationship simpler: there is no separate KeyVox login attached to normal dictation, while iCloud can handle sync on your own Apple devices.
Do you want dictation that remains available without a service connection?
Because KeyVox does the speech-to-text work on your device, normal dictation does not depend on reaching a KeyVox transcription server. After setup, you can keep dictating during an internet outage, on a flight, or anywhere you would rather not upload a recording.
That independence is one of the practical benefits of local dictation, not just a technical detail.
Which extra features matter enough to change the answer?
Do not let a long feature grid hide the few things you will use every day.
KeyVox combines local dictation with custom dictionary correction, reversible formatting, on-device Vibes writing styles, and local KeyVox Speak playback on iPhone. Wispr Flow offers cloud-connected features such as a synced dictionary, snippets, and Command Mode on supported plans and platforms.
Write down the three things you care about most. Compare those first. A feature you will never use should not outweigh the privacy and everyday experience you want.
Remember the destination app
Local dictation protects the transcription step. It does not make the final destination local.
When KeyVox places words into ChatGPT, Claude, a web app, email, or team chat, that destination controls the text from the moment it appears. Some services may save or sync a draft before you press Send. The recording stayed on your device during KeyVox transcription, but the inserted text follows the destination's rules.
That is why “local” should be understood precisely, not treated as a magic word for the entire workflow.
A straightforward KeyVox or Wispr Flow decision
KeyVox is the stronger fit when your priorities are keeping recordings on your device, dictating offline after setup, using Mac and iPhone, and avoiding another account or subscription.
Wispr Flow covers Windows and Android Beta in addition to Mac and iPhone, but it turns speech into text in the cloud.
For the sourced feature-by-feature version, read KeyVox vs. Wispr Flow. For a broader privacy-focused shortlist, see the best private dictation apps.
The bottom line
If you dictate on Mac and iPhone, KeyVox offers a straightforward advantage: your recording stays on your device while it becomes text, normal dictation works offline after setup, and you do not need to create an account.
Wispr Flow covers more operating systems and organizational features, but it does so with cloud transcription. If privacy, offline use, and a simple Apple-focused setup lead your list, KeyVox is the clearer choice.