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Letterly

Use this AI-powered app to convert unstructured speech into polished, well-written text content

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Getting your ideas down in writing can feel like a typing endurance test.  (“My thoughts are out-pacing my WPM.”)

Whether you’re staring at a blank screen, procrastinating on replying to messages, or making sense of messy notes, you have to write it all yourself.

Wish there was a way you could record your voice and let AI turn your unstructured speech into perfectly written text content for notes, messages, and more?

Meet Letterly.

TL;DR

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Turn your speech into well-written text for notes, content, messages, and more
Rewrite, translate, and organize your text with AI-powered features across multiple devices and the web

At-a-glance

Allows Existing Accounts

Overview

Letterly is an app that turns speech into polished text, so you can capture ideas, create content, draft messages, and more.

Make communication seamless

Letterly instantly transforms unstructured speech into well-written text, so you can speed through all your communication tasks—from replying to casual text messages to formal emails.

  • Save time writing on-the-go text messages, emails, and comments
  • Record from the mobile app and sync with your desktop
  • Send polished texts—no more embarrassing typos!

Speech-to-text emails and texts

Save time writing emails, text messages, and comments across iOS or Android devices.

Whip up engaging content

Say goodbye to writer’s block. With Letterly, it’s a breeze to organize your ideas and create engaging content.

  • Generate social media posts for Instagram, LinkedIn, X, and more
  • Refine and rewrite content to better fit your voice, style, and target audience

AI content creation

Quickly turn your ideas into engaging social media content in your voice and style.

Organize your notes

Letterly is also packed with tools to help you collect and revisit thoughts, so you don’t have to worry about forgetting your best ideas.

  • Record notes, journal, or brainstorm right in the app whenever you get an idea
  • Create organized summaries of your thoughts to get more out of your brainstorming

Note-taking

Organize your thoughts into clear, structured text whenever inspiration strikes.

Simplify your writing process

  • Translate text into any language with automatic recognition of 90+ languages
  • Record offline or with the screen off wherever you are for ultimate flexibility
  • Use the widget or action button on iOS to instantly record with one tap

No matter what industry you’re in, you can use Letterly to streamline your writing process and generate unlimited notes.

Speech-to-text app features

Speed through content creation with features like translation, offline recording, and mobile app widgets.

Letterly lets you transform ideas, thoughts, and ramblings into well-written text for notes, messages, content, and more.

Turn your voice into anything.

Get lifetime access to Letterly today!

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60 day money-back guarantee. Try it out for 2 months to make sure it's right for you!

Deal terms and conditions: Lifetime access to Letterly. All future Pro Plan updates. If Plan name changes, deal will be mapped to the new Plan name with all accompanying updates. You must redeem your code(s) within 60 days of purchase. Stack unlimited codes. Previous AppSumo customers who purchased Letterly can buy more codes to increase their feature limits.
Letterly

Letterly

Letterly.app
FoundedFounded
September 2023
HeadquartersHeadquarters
Spain
Company sizeCompany size
1-10 employees
Product stageProduct stage
Startup
Financial stageFinancial stage
Bootstrapped
Verified by Persona

In addition to our internal vetting process, we use Persona, to validate each company and founder's identity. Learn more

Updates from Letterly

🚀 Huge Update: Long Recordings Now Live 🚀

Posted May 27, 2025

Message from Letterly for AppSumo AI Week!

Posted Apr 17, 2025

Taco Day message from Letterly

Posted Oct 2, 2024

Intro from Letterly

Posted Aug 14, 2024

Update from the founder 12/2024

Posted Dec 26, 2024

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Questions
Reviews

Questions & Reviews

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Showing 5 of 679 questions

Q: Chiarimento Dati Salvati

Visti gli ultimi aggiornamenti, mi sono accorto che nelle impostazioni è comparsa assieme a "cancella Cache" una sezione con "esporta dati". All'interno di questa ho visto che sono trascritte tutte le note con modifiche che ho fatto fino ad ora. Siccome in una risposta dell'08/06/2025 avete specificato che le note eliminate vengono rimosse sia dal dispositivo che dal cloud, come mai c'è questo file con note già cancellate? Dovrebbero comparire solo quelle non cancellate o sbaglio? Grazie.

marco.bJul 8, 2025
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Q: Needs add more text to existing recording

Please add this feature, where we can add more to existing recording -- rather than the need to create another note and have separate lists/notes.

sendricmailJun 5, 2025
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Founder Team
Ilfat_Letterly

Ilfat_Letterly

Jun 7, 2025

A: Hi! Thank you for the feature request — the option to add audio recordings to existing notes is definitely on our priority list. Many users have asked for this, so we’re really eager to implement it. We appreciate your understanding that we can’t provide a timeline just yet, as we’re currently focused on several other tasks, but yes, we got it!

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Q: Can you increase the characters limit for rewriting output ? It is giving incomplete answers

Since the recording time limit 90 minutes (which is great), I can get more sophisticated rewriting answers which might have many, many words. However I discovered that rewriting output has a limit of about 43000 characters, about 9000 words. Could you increased this please ? Otherwise I'm getting incomplete answers (truncated). Thanks in advance

attirailwebPLUSJun 29, 2025
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Founder Team
Ilfat_Letterly

Ilfat_Letterly

Jul 4, 2025

A: Hi there. Thank you for the question!

Could you please clarify what rewrite option you would usually use that you feel does have this limitation?

Please feel free to reach out at hi@letterly.app so we can take a further look into your situation :)

Thank you!

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Q: Unable to remove User 2's email (after deleting their device) from account.letterly.app portal. Can you help?

* In the "https://account.letterly.app/" portal, I was conducting a test where I invited User 2 via email.
* On User 2's laptop, visited https://web.letterly.app/ and clicked "Continue with email" and signed in using the invited email. Received an email and clicked link.
* It redirects to URL https://web.letterly.app/notes. I click "Activate Pro" (side note, this is the only webpage that has a "Log out button") and am logged into User 2's account.

* ISSUE: Back in "https://account.letterly.app/" portal, I then decide to delete User 2's device by clicking the red bin icon which is successful. HOWEVER User 2's email still remains in my account. Please explain how I can remove User 2's email from my account.

planetcreationJun 28, 2025
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Founder Team
Ilfat_Letterly

Ilfat_Letterly

Jul 4, 2025

A: Hello Michael,
The emails can be deleted only on our end for now. So even if they're not active, they stay in your account. If that bothers you, absolutely no problem, we can do it on our end.
Please feel free to reach out to us at hi@letterly.app (which you already did, but just in case anyone else is reading!)
Thank you :)

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Q: Recording storage, Codes Required, Sharing Codes

1. Voice Storage
If I record audio via iPhone, is it first saved locally or uploaded directly to EU servers? I’m trying to avoid duplicate files and excessive iPhone storage use.

2. Sharing Codes
If I use only 3 of 4 codes, can I give 1 to a friend to use independently, without linking to my account or needing access management?

3. Buying More Codes
If I buy 4 codes now and another 4 later, does that cover 12 devices total or unlock the 8-code tier with 15 devices?

planetcreationEdited Jun 7, 2025
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Founder Team
Ilfat_Letterly

Ilfat_Letterly

Jun 7, 2025

A: Hi, thanks for the questions!

1. The data is saved both on the server and locally. In the future, we’re planning to add a feature that lets you delete it locally and keep it only on the server.

2. Yes, you can share the code with a friend — but only if you haven’t activated it yet at account.letterly.app. If it’s already activated, you’d need to either give access through your account or refund this code and buy a new code for your friend.

3. Yes, of course — you don’t have to buy everything at once. You can stack codes separately whenever you like.

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