Open Chat Inference vs NanthAi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Open Chat Inference
Connect to your favorite AI providers from a single, fast interface. This client app allows you to use your own API keys from services like Anthropic and OpenAI. Enjoy a clean, distraction-free chat experience with persistent history and secure key storage.
- Connect multiple AI providers
- Persistent conversation history
- Secure API key storage
- Distraction-free interface
- Dark and light themes
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Open Chat is a native AI chat client that connects to the AI providers you already use. Bring your own API keys from Anthropic, OpenAI, and chat from a single, fast interface. Features: - Connect multiple AI providers in one app - Persistent conversation history - API keys stored securely in your device's keychain - Clean, distraction-free chat interface - Dark and light themes Open Chat is a client application. You'll need your own API keys from supported AI providers to use it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
NanthAi
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The AI you need at the price you want. Write, research, create and get work done with hundreds of AI models in one app. CHOOSE HOW YOU RUN YOUR AI Connect OpenRouter to access 300+ models, including OpenAI's GPT models, Claude, Gemini, Llama and Mistral. Pay for what you use, with no markup from NanthAI. Or connect Codex and Pi on your Mac with NanthAI Runtime and Pro. Use your existing provider accounts or local models configured through Pi, and work from your iPhone or iPad. PUT YOUR AI MODELS TO WORK TOGETHER Bring models and Personas into the same conversation. Have one draft, another critique, and others build on the ideas. Cloud and Mac participants can collaborate in one thread. EXPLORE EVERY DIRECTION Branch from any message to try another approach without losing the original. Organise chats into folders and continue across your devices. YOUR MODELS, YOUR SETTINGS Filter models by capability and price. Adjust creativity, response length and reasoning effort where supported. PRO TOOLKIT • £4.99 ONCE Core chat is free. A single purchase adds: • PERSONAS — Create AI specialists with custom instructions, models and tools. • AUTONOMOUS DISCUSSIONS — Let AI participants debate, brainstorm and develop ideas together. • MEMORY — Carry useful facts and preferences between conversations. Review, edit and pin what matters. • DOCUMENTS & KNOWLEDGE — Upload files, ask questions and explore answers with quote-backed citations. • CREATION & ANALYSIS — Make Word documents, Excel spreadsheets and PowerPoint presentations. Analyse data and build charts. • IMAGES, VIDEO & AUDIO — Generate images, video, music and speech with supported models. • DEEP RESEARCH — Explore the web and academic papers to produce structured reports with sources. • INTEGRATIONS — Work with Microsoft 365, Notion, Slack, Cloze and Apple Calendar through natural-language requests. • SCHEDULED JOBS — Automate recurring briefings, research and other AI tasks. • IDEASCAPES — Arrange conversations on a visual canvas to see how ideas connect. • MAC RUNTIME — Send work to Codex or Pi on your Mac, follow progress and bring published results into your chats. NanthaI has no recurring subscription. AI-provider usage and third-party subscriptions are charged separately. Mac runtime requires an awake and connected Mac, NanthAI Runtime, and separately configured Codex or Pi. BUILT FOR DAILY USE Full iPad support, keyboard shortcuts, dark mode and seven languages. Continue your conversations on Android and the web.
Screenshots
Verdict
The clearest difference is in-app purchases: Open Chat Inference at none against NanthAi's 1. Open Chat Inference also leads on iOS requirement (14.0 vs 26.0). On price, ads 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. NanthAi sells 1 one-off in-app purchase. Open Chat Inference asks for nothing beyond the download.
| Parameter | Open Chat Inference | NanthAi |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Every 4 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 14 MB | 44 MB |
| Age rating | 17+ | 17+ |
| Developer | Weiss Solutions LLC | FERDINANDO VALSECCHI |
In-app purchases
Open Chat Inference
No in-app purchases
NanthAi
- NanthAi:Edge Pro$4.99









