Most private voice-to-text apps 2026
Least data leaves your device; clearest opt-outs.
Superwhisper ranks #1 for most private voice to text (Local mode keeps audio on device). 5 apps tested on identical audio; the full ranking and what each is best for is below.
The ranking
# App Most private voice to text Overall
1
Superwhisper On-device dictation
Local mode keeps audio on device
6.3 / 10
2
Aqua Voice Cleanest cloud-only privacy
Audio always uploaded
7.6 / 10
3
TypeLess Weakest privacy posture
Audio always uploaded
6.4 / 10
4
Wispr Flow A privacy mode, if you find it
Audio always uploaded
5.9 / 10
5
Willow Voice Weakest privacy of the four
Audio always uploaded
7.2 / 10
Why these rank where they do
- A genuine offline mode — no audio leaves the device in local configuration.
- You can opt out of training, tracking and history.
- In cloud mode it still sends app context and clipboard to Modal.com.
- Sends only the audio — no app context or clipboard beyond the recording.
- You can opt out of having your audio used for training.
- Cloud-only: every recording is uploaded to Aqua’s AWS backend.
- Tracking and history cannot be turned off.
- Claims zero data retention and no training use (stated during onboarding).
- Cloud-only with telemetry packets sent every 30 s at idle — even when not recording.
- No local mode, no opt-out for tracking — least configurable privacy of the five.
How we ranked this
Ranked by a derived privacy score: audio upload, data sent beyond audio, streaming before you press Stop, and training / tracking / history opt-outs. Local-only behaviour scores highest.
Full methodology →