ETOS LLM Studio vs Simple Pace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ETOS LLM Studio
This AI client offers advanced features for managing local knowledge bases and virtual personas. It provides deep integration with Apple Watch, supports multiple AI models, and allows for extensive customization of AI interactions. The app aims to be a powerful, all-around assistant for users seeking more than a basic chat interface.
- Native iOS and watchOS integration
- Multi-model engine support (OpenAI, Anthropic, Google)
- Local RAG memory with SQLite vector database
- Customizable Worldbook Engine for role-playing
- Proactive intelligence cards via Daily Pulse
- Siri Shortcuts and URL Scheme integration
- Dual-engine Text-to-Speech
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Welcome to ETOS LLM Studio—a native AI client born out of a boring high school classroom that has ultimately evolved into a hardcore geek powerhouse. Here, AI is no longer a dull chatbox, but an all-around assistant seamlessly integrated into your digital life. Whether you want to awaken top-tier intelligence on your wrist at any moment, or build your exclusive local knowledge base and virtual personas on your phone, ETOS delivers an uncompromising, ultimate experience. [Core Highlights] Native Dual-Platform, A Universe on Your Wrist Deeply optimized for iOS and watchOS, refusing the compromises of watered-down versions. We have entirely rebuilt the chat interaction on Apple Watch, supporting streaming output, voice input, and complex concurrency, while achieving seamless real-time synchronization of configs, sessions, and tools across both platforms. Multi-Model Engine & Absolute Control Native support for mainstream providers like OpenAI, Anthropic (Claude), and Google (Gemini). We give the power back to you: customize request headers, dynamically configure model parameters, or even directly modify the raw JSON request body, satisfying a geek's desire for absolute API control. Memory Accumulation & Worldbook Engine Local RAG Memory: Your data belongs to you. Built with a fully local SQLite vector database supporting text chunking and embeddings, giving your AI genuine long-term memory. Worldbook Engine: Supports highly customizable character backgrounds, conditional triggers, and system prompt injections. Fully compatible with mainstream Worldbook formats, ready to unlock deep role-playing and immersive conversations anytime. Daily Pulse Break the passive "Q&A" deadlock. Every morning, the system synthesizes your long-term memory, recent conversations, and external signals to proactively generate high-value intelligence cards. These seamlessly transform into to-dos and chat prompts, forming a perfect positive feedback loop. Boundless Extension & Automation Fully integrated with MCP (Model Context Protocol), supporting remote tool calling and capability negotiation. Deeply integrated with Siri Shortcuts and connected with the local file system via URL Schemes, extending the AI's reach to every corner of your device. Supports dual-engine (System / Cloud) TTS (Text-to-Speech) reading, giving your AI a real voice. [About the Developer & Open Source Commitment] I am a high school student with a deep passion for computer technology. The original intention behind developing this app was simply that I was tired of the expensive and crippled AI software on the market. So, I decided to take matters into my own hands and build the ultimate client for my daily-use Mac and Apple Watch. Due to the extremely high Apple Developer annual fee, the App Store version charges a symbolic fee. Consider it a crowdfunding effort to help me pay off the debt, while you buy the convenience of not having to compile and tinker with it yourself. But technology should be shared; open source is my bottom line. The complete source code of ETOS LLM Studio (over 88,000 lines) is fully open-sourced on GitHub under the GPLv3 license. If you are also a geek who loves tinkering, you are completely free to pull the code, compile, and install it yourself for free. No matter how you found your way here, welcome to the world of ETOS. Are you ready to start the next conversation with your AI?
Simple Pace
This app helps runners calculate and plan their workout and race paces. It's designed for runners of all levels, from beginners training for a 5K to experienced athletes aiming for a marathon personal best.
- Workout pace planning
- Race pace calculation
- 5K to marathon training support
- User-friendly interface
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Whether you're training for your first 5K or chasing a marathon PR, Simple Pace helps you plan your workout and race paces.
Screenshots
Verdict
The clearest difference is update cadence: Simple Pace at every 5 days against ETOS LLM Studio's every 3 weeks. Simple Pace also leads on price ($0.99 vs $2.99). On rating, ratings volume, ads and in-app purchases 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
ETOS LLM Studio costs $2.99 and Simple Pace $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for ETOS LLM Studio against 5.0 for Simple Pace. Both are backed by a comparable volume of ratings — 2 and 4 respectively.
ETOS LLM Studio ships an update every 3 weeks, Simple Pace every 5 days. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.
| Parameter | ETOS LLM Studio | Simple Pace |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 5.0 (2 ratings) | 5.0 (4 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 152 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | 琳 李 | Kevin Marsden |
Customer experience
ETOS LLM Studio
Simple Pace
In-app purchases
ETOS LLM Studio
No in-app purchases
Simple Pace
No in-app purchases









