WriteAfy vs Invoke
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WriteAfy
Access powerful AI models locally or through cloud APIs. This tool offers flexible integration with GPT-4, OpenAI, Grok, and local LLMs for diverse tasks like coding, drafting, and research.
- Private local LLM support with Ollama
- OpenAI and Grok API integration
- Built-in text-only GPT-4 model
- Bing-powered real-time searches
- Image generation capabilities
- Seamless model switching
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WriteAfy (formerly ChatAPI) — Your all-in-one AI assistant featuring a free built-in text-only AI model, plus support for OpenAI, Grok, Claude, and Ollama. KEY FEATURES • Flexible AI Access: Get started with the free built-in AI model, connect supported cloud AI providers, or run private local LLMs using Ollama on your own computer or server. • Powerful & Versatile: Switch between supported AI models for writing, coding, brainstorming, research, and more. • Privacy & Control: Choose between locally hosted AI models and cloud-based AI services to fit your needs. SUBSCRIPTION OPTIONS • Monthly: Unlock premium app features, supported AI integrations, and Ollama connectivity. • Yearly: Enjoy the same premium features with annual savings. DOWNLOAD WRITEAFY TODAY — YOUR AI, YOUR WAY! Start exploring AI for free! Connect your favorite AI providers, run your own local models, and bring writing, coding, and creativity together in one powerful app. Download WriteAfy now and take control of your AI experience! PRIVACY POLICY https://sites.google.com/view/gpt-lite/privacy TERMS OF USE https://sites.google.com/view/gpt-lite/terms SUPPORT https://sites.google.com/view/gpt-lite/support DISCLAIMER WriteAfy (ChatAPI-AI) was formerly known as ChatAPI. All previous references to ChatAPI refer to WriteAfy. Third-party AI services are provided independently and may require separate accounts, API credentials, or usage fees.
Invoke
This app allows you to chat with your own locally hosted AI models, offering a private and secure experience. It connects to Ollama or LM Studio servers on your local network, requiring some technical setup for a fully offline AI conversation.
- Connects to local LLM servers
- Offline and privacy-focused
- Supports Ollama and LM Studio
- Real-time message streaming
- Chat history management
- Dark Mode support
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Note: This app is intended for users who are able to set up a local LLM server (Ollama or LM Studio) within their own LAN environment. Some technical setup is required. Chat with your local LLM! Seamlessly connect to Ollama or LM Studio for a fully offline, privacy-focused AI chat experience! This iOS app connects to a locally hosted Large Language Model (LLM) server and enables seamless, natural conversations. Compatible with Ollama and LM Studio via HTTP, it provides real-time message streaming and intuitive chat history management. The app operates entirely within a local network—no internet connection required—making it ideal for those who prioritize privacy and security. Key Features: - Easy connection to local LLM servers (Ollama / LM Studio) - Natural chat UI with bubble-style layout - Auto-saving and browsing chat history - Server and model selection via settings screen - Supports Dark Mode
Screenshots
Verdict
The clearest difference is rating: WriteAfy at 4.2 against Invoke's 3.3. WriteAfy also leads on review sentiment (75% vs 58%). Invoke's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, ratings volume, update cadence and device support 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
Both are free to download. WriteAfy sells 3 in-app purchases, starting at $3.99 per month. Invoke asks for nothing beyond the download.
WriteAfy holds the better App Store score, 4.2 against 3.3. Both are backed by a comparable volume of ratings — 5 and 10 respectively. Written reviews point the same way: 75% of WriteAfy's written reviews are positive against 58% of Invoke's.
WriteAfy ships an update every 8 days, Invoke weekly. Both last shipped on November 14, 2026.
| Parameter | WriteAfy | Invoke |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) — better | 3.3 (10 ratings) |
| Positive reviews | 75.0% of reviews — better | 58.3% of reviews |
| Number of ratings | 5 | 10 — better |
| Update frequency | Every 8 days | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 49 MB | 3 MB |
| Age rating | 17+ | 4+ |
| Developer | Andres Nunez Soto | kazuhiko sugimoto |
Customer experience
WriteAfy
Invoke
In-app purchases
WriteAfy
- Unlimited Access (Monthly)7 Days trial$3.991 Month
- Unlimited Access (Yearly)$44.991 Year
- Pro Supporter Yearly$69.991 Year
Invoke
No in-app purchases
