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KeyVox vs TrainScription

Bottom line

You can run KeyVox on your own machine or server; TrainScription is hosted by the vendor.

Which one should you try?

KeyVox

Freemium

Best for Users prioritizing privacy and local processing

Visit KeyVox See full review

TrainScription

Freemium

Best for Privacy-conscious professionals

Visit TrainScription See full review

Pricing, capabilities and platforms side by side. Prices are as of the "Pricing checked" date in the table.

KeyVox

KeyVox

KeyVox installs as a keyboard on iOS and a menu-bar app on macOS, transcribes via downloaded AI models (~190 MB for Whisper, ~480 MB for Parakeet), and writes text into any app the moment you release the trigger key. The Vibes feature applies reversible writing styles after dictation — so you can rephrase a casual voice note into a formal email without re-dictating. The Speak module reads copied text aloud using on-device voices. Where it breaks: KeyVox is a dictation keyboard, not a manual typing keyboard, so users who want to mix voice and touch typing in the same session have to switch back to their system keyboard constantly. Intel Mac support exists, but Apple Silicon is the architecture this runs well on.

TrainScription

TrainScription

TrainScription runs Whisper entirely in your browser via WebAssembly, processing audio in 5-second chunks that are never written to disk and never leave the machine. The Phonetic Brain lets you highlight a misfire — a misspelled proper noun, an industry term Whisper mangles — and that correction fires automatically on every future session. Browser Tab mode covers Google Meet, Teams web, Zoom web, and any other browser-based call; Full Desktop mode, which captures all system audio, is a paid-only feature. The free tier caps sessions, so heavy users who record three or four long calls daily will hit that ceiling and either upgrade or find the cap disruptive. There is no API, no mobile path, and no way to push transcripts into a downstream system without manual export.

AttributeKeyVoxTrainScription
PricingFreemiumFreemium
Price—$9.99
Pricing checkedNot checked yetJul 1, 2026
Free trialNot statedNot stated
Open sourceNoNo
Has APINoNo
Self-hosted optionYesNo
PlatformsmacOS, iOSChrome browser (extension); desktop audio via Pro mode
Pros
  • All transcription runs on-device with zero network requests, so sensitive dictation — legal notes, medical records, anything you would not paste into a web form — never touches a third-party server.
  • Hold-to-record, release-to-transcribe on macOS means text appears without a delay loop, so you stay in flow instead of watching a spinner after every sentence.
  • Reversible Vibes styles let you apply or swap a writing tone after dictating, so you do not have to re-record when the first draft's register is wrong.
  • iCloud sync for the custom dictionary means a name or technical term you train on Mac appears on iOS without manual re-entry, so your vocabulary carries across devices.
  • Support for both Whisper and Parakeet models with multi-lingual capability means you are not locked to one transcription engine or one language if your workflow spans both.
  • All transcription runs locally via WebAssembly with zero network calls during a session, which means audio from privileged conversations — legal strategy, M&A discussions, compliance reviews — never touches a third-party server.
  • No bot joins the call as a participant in either mode, so the other party has no indication the conversation is being transcribed, which matters in client-facing or sensitive negotiations.
  • The trainable Phonetic Brain permanently maps phonetic misfires to correct spellings after a single correction, so domain-specific terms — proper nouns, filing codes, product names — stop breaking after the first session that introduces them.
  • The one-time payment for Pro unlocks unlimited sessions and Full Desktop mode with no recurring charge, which removes the cost accumulation problem for professionals who transcribe daily.
  • Sessions are automatically segmented and grouped in Recovery with full post-session correction capability, so a dropped connection or long meeting does not mean losing the transcript or having to re-review from scratch.
Cons
  • KeyVox is not a full keyboard — on iOS it has no ABC input layer, so any session where you need to mix typed and dictated text requires switching keyboards back and forth; teams that want a single keyboard handling both modes will abandon this for a dictation tool layered on top of their existing keyboard.
  • Performance scales with Apple Silicon; the vendor explicitly notes Intel Macs are supported but recommends Apple Silicon for maximum performance — on older Intel hardware, transcription of longer passages slows noticeably, and teams still on pre-M1 machines will find a cloud-based dictation service faster in practice.
  • There is no API and no self-hosted server deployment path, so developers who want to pipe dictation output into a pipeline or trigger transcription programmatically have no integration surface — teams building voice-to-action workflows will need a different engine entirely.
  • The free tier caps session count, and professionals running three or more long calls per day will exhaust the free allowance quickly — the next step is the paid upgrade or accepting interrupted workflows mid-week.
  • There is no API and no automated export path, so any team that needs transcripts to arrive in a CRM, document management system, or case file without a manual download step has to build that handoff themselves — and at the point where that overhead becomes a daily tax, teams move to a cloud transcription service that offers a webhook or native integration, accepting the privacy trade-off in exchange.
  • Full Desktop mode, which is required for native app meeting clients like Teams desktop or Zoom desktop, is a paid-only feature — teams on those apps who want to evaluate the tool on the free tier cannot test the primary capture mode they would actually use in production.
  • Whisper's accuracy on heavily accented speech or fast cross-talk degrades, and while the Phonetic Brain corrects recurring proper-noun errors, it does not address the underlying model's accuracy ceiling — teams transcribing multilingual calls or high-interruption conversations will find a residual error rate that manual correction does not eliminate.

Made up your mind?

KeyVox

Freemium

Best for Users prioritizing privacy and local processing

Visit KeyVox See full review

TrainScription

Freemium

Best for Privacy-conscious professionals

Visit TrainScription See full review

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Specs come from each tool's own site and docs (how we test). AIDiveForge is editorially independent.

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