Caverno vs HTML Viewer (013653)
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Caverno
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Caverno is a powerful chat client for locally-hosted LLMs. Connect to Ollama, LM Studio, vLLM, or any OpenAI-compatible API endpoint and start chatting ā no cloud required. KEY FEATURES ⢠Any OpenAI-Compatible Server Connect to your own LLM running on localhost or your local network. Supports any endpoint that speaks the OpenAI API format. ⢠Tool Calling (MCP Protocol) Extend your AI with real-time tools ā web search, calculator, code execution, and more. Caverno uses the Model Context Protocol to let your LLM take actions. ⢠Session Memory Your assistant remembers your preferences, constraints, and context across conversations. Memory is stored locally and fully under your control. ⢠Voice In & Out Speak your messages and have responses read aloud. Configurable speech rate and auto-read options. ⢠Image Attachments Attach photos from your library to include visual context in your conversations. ⢠Multiple Conversations Create, switch, and manage separate chat threads. All conversations are persisted locally. ⢠Assistant Modes Switch between General and Coding modes for different response styles tailored to your task. ⢠Privacy First No account required. No data sent to third parties. All conversations and memory stay on your device ā the only network connection is to the server you configure. GETTING STARTED 1. Install an OpenAI-compatible LLM server (Ollama, LM Studio, etc.) 2. Open Caverno and go to Settings 3. Enter your server URL and select a model 4. Start chatting! Caverno is designed for developers, AI enthusiasts, and anyone who wants full control over their AI assistant.
HTML Viewer (013653)
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Every HTML file you generate with AI deserves a proper home ā and a proper canvas. HTML Viewer is the studio built for the age of AI-generated code. Whether you're creating dashboards, prototypes, or data visualizations from any AI assistant or large language model, this app gives your HTML artifacts the full-fidelity rendering environment they deserve. IMPORT FROM FILES, INSTANTLY Bring in any HTML file straight from the Files app ā iCloud Drive, local storage, or any connected provider. No copy-pasting, no workarounds. Tap, import, and render. ORGANIZED THE WAY YOU WORK Build a nested folder structure and manage all your HTML files in a collapsible file tree. When it's time to focus, one tap hides the entire sidebar and expands the canvas to fill your screen. TABS AND SPLIT VIEW Open multiple HTML files at once with a clean tabbed interface, or activate split view to compare two files side by side. Perfect for reviewing iterations, design variations, or before-and-after states across your projects. YOUR FILES, YOUR DEVICE Everything stays on your device. No uploads, no remote servers, no accounts required. Your files are stored privately on-device by default. HTML Viewer is the tool that was missing from every AI-assisted workflow. Download it today and give your artifacts a studio-grade home.
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Verdict
The clearest difference is iOS requirement: HTML Viewer (013653) at 18.0 against Caverno's 26.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Caverno | HTML Viewer (013653) |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | ā |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 18.0 ā better |
| Further details ā not scored | ||
| Size | 33 MB | 3 MB |
| Age rating | 17+ | 17+ |
| Developer | Osamu Noguchi | Naoya Yamashita |
In-app purchases
Caverno
No in-app purchases
HTML Viewer (013653)
No in-app purchases
Questions
Is Caverno free?
Is HTML Viewer (013653) free?
Do Caverno or HTML Viewer (013653) have ads?
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