Comparison

PBuilder vs AI Agent Builder

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

Head to head
About

PBuilder

Features
Read full description

PromptBuilder brings AI prompt creation, image generation, and image editing into one streamlined creative workflow. When you are not sure what to write, guided questions help organize your idea into a clearer prompt for AI image and video tools. Review prompts for different models, generate images in the app, and continue with template-based image or photo editing. Key features β€’ Create prompts for AI image generation β€’ Plan prompts for AI video generation β€’ Organize ideas with guided chat β€’ Review prompt output for multiple AI models β€’ Generate images inside the app β€’ Edit images and photos with templates β€’ Save history and resume previous work β€’ Follow a clear credit-aware generation flow Great for β€’ Writing stronger AI image prompts faster β€’ Creating AI art and social media visuals β€’ Planning detailed video-generation prompts β€’ Moving from prompt creation to image editing in one app β€’ Comparing prompt styles across AI models Turn your idea into a structured prompt and generated image with less friction using PromptBuilder.

About

AI Agent Builder

Features
Read full description

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 β€” all without writing a single line of code. NEW IN VERSION 2.0 Template Gallery β€” 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 β€” 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 β€” 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.

Screenshots

PBuilder4 screens
AI Agent Builder4 screens

Verdict

The call

The clearest difference is price: PBuilder at Free against AI Agent Builder's $2.99. PBuilder also leads on update cadence (every 4 days vs every 10 days). AI Agent Builder's advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

PBuilder is free to download; AI Agent Builder costs $2.99 up front. PBuilder sells 3 in-app purchases, starting at $5.99 per month. AI Agent Builder asks for nothing beyond the download.

UpkeepUpdate frequency

PBuilder ships an update every 4 days, AI Agent Builder every 10 days. The most recent releases landed on September 27, 2026 and September 15, 2026 respectively.

Scorecard5 real differences Β· 2 level
PBuilder versus AI Agent Builder: the parameters behind the verdict, then further details
ParameterPBuilderAI Agent Builder
PriceFree β€” better$2.99
Update frequencyEvery 4 days β€” betterEvery 10 days
AdsYesNo β€” better
In-app purchasesYesNo β€” better
Best chart rankβ€”#140 β€” better
DevicesiPhoneiPhone, iPad β€” better
Requires iOS17.617.0 β€” better
Further details β€” not scored
Size38 MB6 MB
Age rating17+4+
DeveloperBySho2Yuhsiu Lai

In-app purchases

3 purchases

PBuilder

Subscriptions3
  • Light Plan$5.991 Month
  • Basic Plan$9.991 Month
  • PremiumPlan$14.991 Month
None

AI Agent Builder

No in-app purchases

Questions

Is PBuilder free?
PBuilder is free to download, with in-app purchases available.
Is AI Agent Builder free?
AI Agent Builder costs $2.99, with no in-app purchases.
Do PBuilder or AI Agent Builder have ads?
PBuilder shows ads; AI Agent Builder does not.
Which is updated more often, PBuilder or AI Agent Builder?
PBuilder ships an update every 4 days, and AI Agent Builder every 10 days. Most recently, PBuilder was updated on September 27, 2026 and AI Agent Builder on September 15, 2026.

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