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Lumi Studio
Lumi Studio

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On-device speech-to-text on iPhone — private, offline, no subscription

Most transcription apps send your audio to a server and charge monthly. For a doctor's visit, a private interview, or a lecture you recorded, that's a lot of trust to hand over for a recurring fee.

What to look for in a transcription tool

  • Transcription that runs on your device, so audio and text never leave the phone.
  • Works offline — no account, no upload, no waiting on a server.
  • You own the notes: plain-text or Markdown export, not locked in a cloud.
  • A one-time price instead of a subscription for something you use a few times a month.

The trade-off is honest: on-device models can be a little less accurate than the biggest cloud engines, and very long recordings take processing time. For most meetings, lectures and voice memos that's a fair price for privacy.

I built Sono Note around this: record or import audio, transcribe on-device, edit, and export — offline, pay once, no subscription.

If you're weighing pay-once vs subscription tools in general, the 5-year math is usually not close.

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