Comparison

ChatX vs fullmoon

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ChatX

This AI chat client leverages advanced language models to help you generate content and boost efficiency. It offers features like prompt collections, quick phrases, and image generation, all accessible through high-speed API servers. Manage your conversations and settings across multiple devices with ease.

Highlights
  • Multiple advanced AI models
  • High-speed API servers
  • Prompt collections
  • Image generation
  • iCloud multi-device sync
  • Quick phrases and shortcuts
Features
Read full description

ChatX is a powerful AI chat client powered by the most advanced 4o、5、5mini、o3、DeepSeek V3/R1、Claude model. With our high-speed API servers, you can use AI to generate any content anytime, anywhere, to boost your work and life efficiency. 【Key Features】 - Words Mode: Spend only for what you use, never waste a word - Prompt Collections: Easily start every conversation, advanced prompts available - Quick-switch New Conversations: Flexibly control context lines - Quick Phrases: Boost your dialogues with a single click to send - High-speed API servers: Experience ultimate speed, boundless access, and customization support - API Key Mode: Check your monthly usage - Token Calculator: Real-time financial calculations, know your consumption details - Image Generation: Official Beta interface for creating images with text - Shortcuts: URL Scheme & Siri 【Chat Experience Enhanced】 - AI Parameters: Model, creative temperature, dialogue memory, conversation length - TTS Auto Speech: Auto language detection, speed of reading settings - Chat Control: Pause and resume generation - Chat Management: Icon settings, pinning, order adjustment - Message Enhancement: Select text, resend, rewrite, share - Casual Chatting: Start a conversation anytime, anywhere - Others: Haptic feedback, chat font size - Compression history summary - Quickly open chat from the Control Center 【Advanced Features】 - Support newest Gemini model - iCloud Multi-device Auto Sync: Sync your chat lists and settings - macOS & iPad Keyboard Support: Use shortcut keys to send messages - Lock Screen Widgets: Quick lock screen launch - URL Schemes: Call shortcut commands - Non-Stream Responses API Encourage us with five stars, More powerful features will be developed. Also, feedback are welcome to tell us on Twitter:@AppChatX / The6XStudio@gmail.com

About

fullmoon

This app provides a private and offline way to interact with local large language models. It runs models directly on your device, optimized for Apple silicon, and is available across multiple Apple platforms. Personalize your experience and integrate with other apps via Shortcuts.

Highlights
  • Private LLM chat
  • Fully offline operation
  • On-device model execution
  • Cross-platform Apple support
  • Customizable themes and fonts
  • Shortcut integration
Read full description

the simplest way to use private LLMs: works fully offline and private when you don’t have internet. runs models on-device optimized for Apple silicon. works on every platform: iOS, iPadOS, macOS, visionOS personalize: adjust the theme, fonts, and system prompt in the app. Shortcut: chat with fullmoon or get an output from a local model to use with other actions. free, open source, private.

Screenshots

ChatX4 screens
fullmoon4 screens

Verdict

The call

The clearest difference is in-app purchases: fullmoon at none against ChatX's 6. ChatX's advantage is review sentiment (88% vs 78%) and ratings volume (481 vs 100). On price, rating, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ChatX sells 6 one-off in-app purchases. fullmoon asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ChatX holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 481 and 100 respectively. Written reviews point the same way: 88% of ChatX's written reviews are positive against 78% of fullmoon's.

UpkeepUpdate frequency

ChatX ships an update fortnightly, fullmoon every 10 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 5 level
ChatX versus fullmoon: the parameters behind the verdict, then further details
ParameterChatXfullmoon
PriceFreeFree
Rating4.6 (481 ratings) — better4.4 (100 ratings)
Positive reviews88.1% of reviews — better77.8% of reviews
Number of ratings481 — better100
Update frequencyFortnightlyEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, MaciPhone, iPad, Mac, Vision Pro
Requires iOS15.0 — better17.6
Further details — not scored
Size28 MB30 MB
Age rating4+17+
Developer6X Studio LLCMainframe Computer, Inc.

Customer experience

ChatX

All ratings481 ratings
Positive90.4%
Neutral1.5%
Negative8.1%
Written reviews252 reviews
Positive88.1%
Neutral2.4%
Negative9.5%

fullmoon

All ratings100 ratings
Positive86.0%
Neutral3.0%
Negative11.0%
Written reviews81 reviews
Positive77.8%
Neutral4.9%
Negative17.3%

User reviews

ChatX

From 481 App Store ratings

What we love

  • 👍 Great app, quality
  • 👍 Useful and powerful client
  • 👍 Excellent replacement for ChatGPT
  • 👍 Nice features
  • 👍 Very solid AI chat app with many features

Room to improve

  • 🐛 Text-to-Speech voices could use improvement
  • 🐛 AI image generation needs an upgrade
  • 🐛 UI size for chats can be unpredictable
  • 🔒 Words limit is not nice
  • 🐛 Difficulty identifying uncensored models

fullmoon

From 100 App Store ratings

What we love

  • 🚀 Fast and efficient
  • 🔒 Offline usage
  • 👍 Clean and polished interface
  • 👍 Works on older devices
  • 👍 Friendly for less tech-savvy users

Room to improve

  • 🐛 Compatibility issues
  • 🐛 Downloading/installing models can be slow
  • 🐛 Responses can be inaccurate or incomplete
  • 🐛 App crashes when using certain features

Bugs and requests

ChatX

Reported bugs

4 issues
  • Inconsistent iCloud sync for chat settings
  • Occasional crashes
  • Compatibility issues with older devices
  • Login screen freezes

Requested features

7 requests
  • Safari extension
  • Keyboard extension
  • Support for Azure OpenAI API
  • Markdown support
  • Local model import and loading
Show 2 more
  • More AI models (e.g., DALL-E, Claude)
  • Customization options for UI size and color

fullmoon

Reported bugs

2 issues
  • Incompatibility with iPhone SE2 and iPad Pro Gen3 despite supporting Metal 3
  • Deepseek models not working on some devices

Requested features

6 requests
  • Add support for saving/copying full chat conversations
  • Expand functionality through Shortcuts integration
  • Provide more advanced language models
  • Allow users to remove/delete downloaded models
  • Add support for attaching files and images
Show 1 more
  • Implement voice mode and customizable AI models

In-app purchases

6 purchases

ChatX

One-time6
  • Pro (Lifetime)Free
  • Add Words Pack 1$0.99
  • Add Words Pack 2$3.99
Show 3 more
  • Pro$4.99
  • Add Words Pack 3$7.99
  • Add Words Pack 4$17.99
None

fullmoon

No in-app purchases

Questions

Is ChatX free?
ChatX is free to download, with in-app purchases available.
Is fullmoon free?
fullmoon is free to download, with no in-app purchases.
Which has better reviews, ChatX or fullmoon?
ChatX is rated higher. ChatX averages 4.6 out of 5 from 481 ratings, while fullmoon averages 4.4 from 100 ratings.
Do ChatX or fullmoon have ads?
Neither ChatX nor fullmoon shows ads.
Which is updated more often, ChatX or fullmoon?
ChatX ships an update fortnightly, and fullmoon every 10 days. Most recently, ChatX was updated on October 17, 2026 and fullmoon on October 16, 2026.

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