How do their growth rates compare?

Letterly has a month-over-month growth rate of -43.9%; Superhuman has +7.9%.

How does pricing compare?

Letterly: Freemium. Letterly is free to start with a freemium model. The free tier covers everyday dictation, while paid plans unlock higher usage limits and advanced features; pricing is shown in-app and on the website. Superhuman: Paid. Paid product with plans for individuals, teams, and enterprises; see the official pricing page for current seat prices and included features.

What are alternatives to Letterly and Superhuman?

Other tools in related categories include Notta, Video Transcriber AI, Missive, Spark Mail, BlueMail.

Letterly vs Superhuman — Traffic (53.01K vs 6.51M), Pricing & Verdict

Open AI Tools

Letterly vs Superhuman — Traffic (53.01K vs 6.51M), Pricing & Verdict | Open AI Tools

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	Letterly	Superhuman
Official Domain	letterly.app	superhuman.com
Pricing Model	Freemium	Paid
Monthly Visits	53.01K (53,009)	6.51M (6,514,241)
MoM Traffic Delta	-41.48K (-43.9%)	+477.48K (+7.9%)
Primary Market & Share	🇺🇸 United States (35%)	🇺🇸 United States (56.8%)
Direct Visits / mo	40.98K	4.96M
User Rating	4.3	4.5
Supported Platforms	Website	Website

Letterly

Speak once, get polished text anywhere you type

Dictate into any app

Speak inside Gmail, Slack, Notion or any other text field and have clean text appear where you were typing, instead of switching apps.

AI rewrites and styles

Convert raw speech into notes, emails, posts or meeting summaries using ready-made styles or your own saved formats.

Meeting and lecture transcripts

Record up to around 90 minutes, get a transcript split by speaker, and generate a summary alongside the full text.

90+ languages with auto-detect

Language detection happens automatically as you speak, and you can switch mid-sentence without changing settings.

Strengths & Pros

+Works as both a dedicated app and a dictation layer inside tools you already use
+Handles long recordings and separates speakers, which basic dictation tools often cannot
+90+ languages with automatic detection and mid-sentence switching
+Available on iOS, Android, macOS, Windows and web with sync, plus offline recording