Comparison

AI Agent Builder vs chat4000

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

chat4000

Read full description

chat4000 is the iPhone companion for OpenClaw, designed to feel faster, cleaner, and more polished to use every day. Use chat4000 to: โ€ข Connect to your OpenClaw setup from iPhone โ€ข Send and receive messages across your paired devices โ€ข Record and send voice messages โ€ข Receive notifications when new messages arrive โ€ข Quickly jump back into conversations with shortcuts on supported devices chat4000 gives you a more refined mobile experience for OpenClaw, with secure paired-device communication, responsive chat, and a simpler interface built for iPhone. An existing OpenClaw setup is required for full functionality.

Screenshots

AI Agent Builder4 screens
chat40003 screens

Verdict

The call

The clearest difference is price: chat4000 at Free against AI Agent Builder's $2.99. AI Agent Builder's advantage is chart position (#181 vs unranked). On update cadence, ads, in-app purchases and device support 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

chat4000 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.

UpkeepUpdate frequency

AI Agent Builder ships an update every 10 days, chat4000 fortnightly. The most recent releases landed on September 15, 2026 and July 25, 2026 respectively.

Scorecard2 real differences ยท 5 level
AI Agent Builder versus chat4000: the parameters behind the verdict, then further details
ParameterAI Agent Builderchat4000
Price$2.99Free โ€” better
Update frequencyEvery 10 days โ€” betterFortnightly
AdsNoNo
In-app purchasesNoNo
Best chart rank#181 โ€” betterโ€”
DevicesiPhone, iPadiPhone, Mac
Requires iOS17.017.0
Further details โ€” not scored
Size6 MB59 MB
Age rating4+4+
DeveloperYuhsiu LaiNeonNode

In-app purchases

None

AI Agent Builder

No in-app purchases

None

chat4000

No in-app purchases

Questions

Is AI Agent Builder free?
AI Agent Builder costs $2.99, with no in-app purchases.
Is chat4000 free?
chat4000 is free to download, with no in-app purchases.
Do AI Agent Builder or chat4000 have ads?
Neither AI Agent Builder nor chat4000 shows ads.
Which is updated more often, AI Agent Builder or chat4000?
AI Agent Builder ships an update every 10 days, and chat4000 fortnightly. Most recently, AI Agent Builder was updated on September 15, 2026 and chat4000 on July 25, 2026.

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