Letterly vs Superwhisper

Letterly

• One voice-notes app across phone, desktop and web
• Turning spoken ideas into emails, posts and journal entries
• Recording meetings or lectures for a transcript and summary

Superwhisper

• People who want dictation that runs on-device and offline
• Buyers who prefer a one-time license to a subscription
• Users who want to choose their own voice and language models

Letterly

• Letterly's site has no pricing page; prices here come from its US App Store listing, which shows several price points for yearly and lifetime PRO.
• The support page limits the free version to 10 recordings of up to 3 minutes each.
• Vendor pages disagree on recording length: the support page says 15 minutes on Pro, the homepage and App Store listing say up to 90 minutes.

Superwhisper

• AI-powered modes, cloud voice models, file transcription and speaker separation all need Pro.
• The Free plan is limited to 2 modes, and those run without AI processing.
• Cloud voice models send audio to hosted servers; only the local models keep audio on the device.
• A Linux version is listed as coming soon and is not yet available.

Letterly

Dictation in any app

Speak inside Gmail, Slack, Notion or any other text field on a computer, or use the Letterly keyboard on iPhone, and the text is inserted where you are typing.

Voice notes with AI rewrites

Record a thought in the app and get cleaned-up text. Choose from 25+ premade rewrite styles, such as an email, post or summary, or build your own.

Meeting and lecture recaps

Long recordings, up to 90 minutes per note, become a transcript split by speaker along with a summary.

90+ languages and translation

The spoken language is detected automatically, including switches mid-sentence, and any note can be translated into 90+ languages.

Audio upload and offline recording

Transcribe audio and video recorded outside the app, and record without an internet connection when you are away from one.

Zapier, webhooks and MCP

Send notes to other apps through Zapier or webhooks, and connect Claude, ChatGPT or Cursor over MCP to search, manage or rewrite your notes.

Superwhisper

Dictation in any app

Speak and have the text typed into whatever app is in front of you, such as Slack, Gmail, Notion or a code editor. More than 100 languages and dialects are supported.

Local models that work offline

Whisper models run entirely on your device and are free to use without limits, so dictation works with no connection and audio is not uploaded.

Cloud voice models on Pro

Pro adds hosted voice models such as S1-Voice, Nova and Scribe, along with real-time transcription. With these models audio is sent to hosted servers.

Modes

A mode sets how speech is processed, from plain transcription to AI modes that rewrite it for a context such as email. Free allows 2 modes without AI; Pro is unlimited.

Meetings and file transcription

Records meetings and produces notes, and Pro adds system audio recording, speaker separation and transcription of audio or video files.

Custom vocabulary

Add names and terms the models tend to get wrong, plus text replacements. Both are included on the Free plan.

Letterly

• Free version$0

  Up to 10 recordings of up to 3 minutes each, according to Letterly's support page.

• PRO (1 month)$19.99

  per month

  Unlimited recordings and AI rewrites. The App Store listing cites notes of up to 90 minutes.

• PRO (3 months)$44.90

  per 3 months

  The same PRO subscription billed every three months, as listed among the App Store in-app purchases.

• PRO (1 year)$69.99–$99.99

  per year; the listing shows several yearly price points

  Yearly PRO. The App Store lists it at $69.99, $79.99, $89.99 and $99.99 without saying which applies to new subscribers.

• PRO (Lifetime)$199.99–$249.99

  one-time; the listing shows two lifetime price points

  A one-time PRO purchase, listed on the App Store at both $199.99 and $249.99.

Superwhisper

• Free$0

  Unlimited dictation with local Whisper models, custom vocabulary, text replacements and up to 2 modes.

• Pro$8.49

  per month, or $84.99 per year

  Cloud voice models, AI-powered modes, unlimited modes, file transcription, system audio recording and speaker separation.

• Pro Lifetime$249.99

  one-time payment

  The same Pro features as the subscription, paid once. One license covers Mac, Windows, iPhone and Android.

• EnterpriseCustom

  Seat-based licensing with SSO and centralized deployment for teams.

Letterly

• Lifetime license

  Lifetime PRO listed from $199.99

  The US App Store listing includes a PRO Subscription (Lifetime) in-app purchase at $199.99 and at $249.99, alongside the monthly and yearly subscriptions.

Superwhisper

• Annual discount

  About 17% less with the yearly plan

  Pro costs $84.99 a year against $8.49 a month, which Superwhisper describes as a saving of about 17%.

• Lifetime license

  Lifetime Pro license for $249.99

  A one-time payment of $249.99 buys Pro for life, with the same features as the subscription. All individual plans have a 30-day refund window.

• Education

  40% off for students and educators

  Verified students, faculty and academic institutions get 40% off list price. The discount is requested by email from an institutional address before purchasing.

• Nonprofit

  40% off for nonprofits

  Verified non-profit and charitable organizations get 40% off list price, requested by email before purchasing.