Comparison

AI Agent Builder vs Prompt Keyboard

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

Head to head
About

AI Agent Builder

Features
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This app turns your iPhone and iPad into a complete workshop for building, customizing, and running your own AI agents. Design an agent's personality, connect it to tools, chain multi-step workflows, and chat with it in real time โ€” all without writing a single line of code. NEW IN VERSION 2.0 Template Gallery โ€” Skip the blank page. This app now includes a dedicated Templates tab with ten professionally designed, ready-to-use agents: Research Assistant, Code Reviewer, Content Writer, Data Analyst, Travel Planner, Study Tutor, and more. Add any template to your library in a single tap, or open it in the builder to customize. Redesigned Dashboard โ€” The home screen is now a dashboard. See your agent stats at a glance, jump into common actions instantly, and browse featured templates the moment this app opens. Demo Mode โ€” Explore every feature with realistic sample data, with no API key required. BUILD AGENTS YOUR WAY A 12-step guided builder walks you through every part of your agent Choose from multiple AI providers: Claude, GPT, Gemini, and Groq Add your own OpenAI-compatible providers such as Ollama, Together AI, Mistral, and DeepSeek 20 built-in tools including web search, calculator, weather, translation, email, and file operations Connect Model Context Protocol (MCP) servers for extended tool access Create sub-agents that your main agent can delegate to Design visual workflows with conditions, loops, and branching Fine-tune temperature, token limits, and streaming behavior CHAT AND ITERATE Test your agents in a live chat with real-time tool execution Export agents as JSON to back up, reuse, or share Edit any agent at any time in the builder PRIVACY FIRST Your API keys are stored locally on your device and are only ever sent to the AI provider you choose. This app does not collect or transmit your data to any third party. NOTE: This app requires your own API key from an AI provider. Groq offers a free tier, so you can get started at no extra cost. Demo Mode lets you preview this app with no key at all.

About

Prompt Keyboard

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. โ€ข Your prompts are stored locally on your device โ€ข No account is required โ€ข The keyboard does not collect what you type โ€ข The keyboard does not send your keyboard input to any server โ€ข 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

AI Agent Builder4 screens
Prompt Keyboard3 screens

Verdict

The call

The clearest difference is price: Prompt Keyboard at Free against AI Agent Builder's $2.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Prompt Keyboard is free to download; AI Agent Builder costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference ยท 5 level
AI Agent Builder versus Prompt Keyboard: the parameters behind the verdict, then further details
ParameterAI Agent BuilderPrompt Keyboard
Price$2.99Free โ€” better
Update frequencyEvery 10 daysโ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS17.0 โ€” better17.6
Further details โ€” not scored
Size6 MB11 MB
Age rating4+4+
DeveloperYuhsiu LaiHa Do Thi Thu

In-app purchases

None

AI Agent Builder

No in-app purchases

None

Prompt Keyboard

No in-app purchases

Questions

Is AI Agent Builder free?
AI Agent Builder costs $2.99, with no in-app purchases.
Is Prompt Keyboard free?
Prompt Keyboard is free to download, with no in-app purchases.
Do AI Agent Builder or Prompt Keyboard have ads?
Neither AI Agent Builder nor Prompt Keyboard shows ads.

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