# Liquid Apollo vs On‑Device AI

The clearest difference is in-app purchases: Liquid Apollo at none against On‑Device AI's 4. Liquid Apollo also leads on ratings volume (639 vs 162). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. On‑Device AI sells 4 in-app purchases, starting at $3.99 per month. Liquid Apollo asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Liquid Apollo against 4.4 for On‑Device AI. Both are backed by a comparable volume of ratings — 639 and 162 respectively. Written reviews are what separate them: 68% of Liquid Apollo's written reviews are positive against 64% of On‑Device AI's.

Liquid Apollo ships an update every 11 days, On‑Device AI every 2 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Liquid Apollo | On‑Device AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (639 ratings)](https://appshunter.io/ios/app/liquid-apollo/id6448019325/reviews)** | [4.4 (162 ratings)](https://appshunter.io/ios/app/ondevice-aiprivate-workspace/id6497060890/reviews) |
| Number of ratings | **639** | 162 |
| Positive reviews | **68.5% of reviews** | 63.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 2 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 151 MB | 1.8 GB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 12+ | 17+ |
| Developer | [Liquid AI, Inc.](https://appshunter.io/developer/1772686878) | [Zijie Deng](https://appshunter.io/developer/1070117038) |

## What reviewers say

### Liquid Apollo

[App page](https://appshunter.io/ios/app/liquid-apollo/id6448019325)

Access a wide range of AI language models, both locally on your device and through cloud APIs. This app allows you to chat with open-source models, connect to your own hosted LLMs, or utilize services like OpenRouter for broad model access.

**Highlights:** Local LLM support, OpenRouter integration, Custom backend connections, Private AI chat, Access to open-source models, Connect to hosted LLMs

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Great app
- 🚀 Works well with OpenRouter
- 🚀 Excellent for running local models
- 🚀 Convenient one-time purchase
- 🚀 Clean and intuitive UI

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Glitches when editing messages
- 🐛 Inconsistent message formatting
- 🐛 Slow performance with larger conversations
- 🔒 Unable to disable app transport security

**Reported bugs**

- Unable to download Liquid Models
- Deleted locally installed models
- OpenRouter support crashes the app
- Voice list doesn't load all available voices
- Backspace lag leading to unintended text deletion

**Requested features**

- Add support for more open-source models (e.g. Gemma 3)
- Implement image generation and upload functionality
- Allow scheduling of asynchronous tasks
- Integrate with Hugging Face model repository
- Provide built-in prompt library


### On‑Device AI

[App page](https://appshunter.io/ios/app/ondevice-aiprivate-workspace/id6497060890)

Transform your device into a private AI assistant for meetings and complex tasks. Features include speaker diarization, live transcription, and specialized subagents for research, analysis, and writing. Control your AI via messaging apps, with options for 100% offline processing or cloud connectivity.

**Highlights:** Speaker Diarization for meeting transcripts, Real-time live transcription, Natural AI speech generation, Deploy specialized AI subagents, AI-powered web browser automation, Control AI via messaging apps, 100% offline processing option

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Member Subscription | $3.99 | per month |
| Pro Member Subscription | $34.99 | per year |
| Lifetime Pro Member | $49.99 | one-time |
| Lifetime Pro Member | $99.99 | one-time |

**What reviewers like**

- 🚀 Game-changing AI assistant
- 🔍 Powerful search functionality
- 👍 Customizable and versatile
- 🌐 Seamless multi-device experience
- 💡 Innovative character-based interactions

**What reviewers complain about**

- 🐛 Crashes on larger models
- 🔋 Heating issues on some devices
- 🔍 Slow and unreliable web search
- 💻 Buggy on macOS

**Reported bugs**

- Crashes on startup
- Model selection issues
- Inability to copy generated text

**Requested features**

- Automated multi-character conversations
- Character set saving and syncing
- Streamlined search integration
- UI optimization for icons
- Remote endpoint support for multi-agents


## Frequently asked questions

### Is Liquid Apollo free?

Liquid Apollo is free to download, with no in-app purchases.

### Is On‑Device AI free?

On‑Device AI is free to download, with in-app purchases available.

### Which has better reviews, Liquid Apollo or On‑Device AI?

Liquid Apollo is rated higher. Liquid Apollo averages 4.5 out of 5 from 639 ratings, while On‑Device AI averages 4.4 from 162 ratings.

### Do Liquid Apollo or On‑Device AI have ads?

Neither Liquid Apollo nor On‑Device AI shows ads.

### Which is updated more often, Liquid Apollo or On‑Device AI?

Liquid Apollo ships an update every 11 days, and On‑Device AI every 2 weeks. Most recently, Liquid Apollo was updated on September 24, 2026 and On‑Device AI on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*