Comparison

Cerebro vs Prompt Keyboard

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Cerebro

This AI-powered thought journal helps you capture ideas and resurfaces forgotten thoughts with context. It automatically extracts to-dos and uses semantic search to find entries based on meaning, not just keywords. Designed for those who struggle with organization, it removes friction by letting AI handle the sorting.

Highlights
  • AI-powered thought processing
  • Automatic to-do extraction
  • Semantic search for ideas
  • Resurfaces forgotten thoughts
  • Frictionless writing experience
  • No folders or manual organization
Features
Read full description

Your thoughts deserve better than a folder. Cerebro is an AI-powered thought journal that remembers so you don't have to. Open the app, write what's on your mind, and close it. That's it. Cerebro handles the rest: organizing your thoughts, extracting action items, and bringing forgotten ideas back at the right moment. How it works: - Open the app to a blank editor. Write freely in markdown. - AI silently processes every entry. No chatbot, no conversation. - Todos are extracted automatically from your natural writing. - A living memory document evolves with your thinking over time. - Push notifications resurface forgotten thoughts with context like "You mentioned wanting to learn Rust a week ago. Any progress?" Semantic search that actually works. Type "that creative project idea" and find an entry about building a camera app, even if those exact words never appeared. Cerebro understands meaning, not just keywords. Built for the forgetful. If you've tried journaling apps and abandoned them because organizing felt like a chore, Cerebro is different. There are no folders, no tags, no categories. You write. The AI organizes. Thoughts come back when they matter. Perfect for ADHD minds. Cerebro was built by someone who forgets things. The entire design removes friction: no onboarding, no setup, no maintenance. Just a blinking cursor ready for your next thought. What Cerebro is not: - Not a notes app. You don't organize anything. - Not a chatbot. The AI works silently behind the scenes. - Not a productivity system. It's a thought persistence layer. Start your free trial today. Your best ideas are worth remembering. Terms of Use: https://cerebro.henrypl.com/terms Privacy Policy: https://cerebro.henrypl.com/privacy

About

Prompt Keyboard

Streamline your AI interactions by saving, organizing, and quickly pasting custom prompts and templates. Create flexible prompts with variables and enhance existing ones for better results. Your data stays private on your device.

Highlights
  • Save and organize reusable prompts
  • Paste prompts from a custom keyboard
  • Create flexible prompt templates with variables
  • Fill template variables before pasting
  • Built-in prompt packs for various uses
  • Local prompt builder and enhancer
  • Organize prompts with categories and tags
Features
Read full description

Prompt Keyboard: AI Paste helps you save, build, organize, and paste better AI prompts anywhere you type. Stop rewriting the same prompts again and again. Keep your best instructions, templates, quick replies, and writing workflows in one clean prompt library, then insert them from a custom keyboard whenever you need them. Use it for AI chats, writing, coding, marketing, study notes, emails, support replies, image prompts, brainstorming, and daily productivity. KEY FEATURES Save Your Best Prompts Create a reusable library of prompts, instructions, templates, and text snippets for the work you repeat every day. Paste From the Keyboard Switch to Prompt Keyboard in any app, choose a saved prompt, and insert it into the active text field without digging through notes or old conversations. Prompt Templates Create flexible prompt templates with variables like topic, tone, language, platform, or output format. Fill Before You Paste For templates with variables, fill in the changing parts first, preview the final prompt, then paste a clean result. Built-In Prompt Packs Start faster with ready-to-use prompt ideas for writing, coding, marketing, email, study, translation, business, social media, productivity, and more. Local Prompt Builder Turn a simple idea into a structured prompt using guided fields such as goal, tone, topic, context, and output format. Prompt Enhancer Improve rough prompts into clearer, more useful instructions with local template-based enhancement. Organize Everything Use categories, favorites, recent prompts, search, and tags to keep your prompt library fast and easy to navigate. PRIVATE BY DESIGN Prompt Keyboard is built with a local-first privacy approach. • Your prompts are stored locally on your device • No account is required • The keyboard does not collect what you type • The keyboard does not send your keyboard input to any server • Full Access is only used to read your saved prompts from this app Prompt Keyboard is made for creators, developers, students, marketers, writers, founders, support teams, and anyone who uses AI tools every day. Save better prompts. Build better templates. Paste faster anywhere.

Screenshots

Cerebro4 screens
Prompt Keyboard3 screens

Verdict

The call

The clearest difference is in-app purchases: Prompt Keyboard at none against Cerebro's 2. Prompt Keyboard also leads on iOS requirement (17.6 vs 26.0). On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Cerebro sells 2 in-app purchases, starting at $9.99 per month. Prompt Keyboard asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Cerebro against 5.0 for Prompt Keyboard. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scorecard3 real differences · 6 level
Cerebro versus Prompt Keyboard: the parameters behind the verdict, then further details
ParameterCerebroPrompt Keyboard
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhoneiPhone
Requires iOS26.017.6 — better
Further details — not scored
Size87 MB11 MB
Age rating12+4+
DeveloperHenry PL, LLCHa Do Thi Thu

In-app purchases

2 purchases

Cerebro

Subscriptions2
  • Cerebro Pro3 Days trial$9.991 Month
  • Cerebro Pro3 Days trial$79.991 Year
None

Prompt Keyboard

No in-app purchases

Questions

Is Cerebro free?
Cerebro is free to download, with in-app purchases available.
Is Prompt Keyboard free?
Prompt Keyboard is free to download, with no in-app purchases.
Which has better reviews, Cerebro or Prompt Keyboard?
Cerebro and Prompt Keyboard are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Cerebro or Prompt Keyboard have ads?
Neither Cerebro nor Prompt Keyboard shows ads.

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