Comparison

OpenCat vs ChatMate+

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

Head to head
About

OpenCat

This AI utility tool offers seamless integration of advanced AI models into your daily routine on Mac, iPhone, and iPad. It features a user-friendly interface, keyboard extensions for in-app AI access, and Siri/shortcut integration for automation. Supports a wide range of popular AI models and offers team deployment options.

Highlights
  • Support for latest popular AI models
  • Keyboard extensions for in-app AI
  • Realistic voice synthesis
  • Siri and shortcut integration
  • Team deployment with Docker
  • Customizable AI parameters
  • Markdown content rendering
Features
Read full description

Bring AI into every part of your workflow: chat, writing, translation, and search. · Multiple model options — local models, API Key, Cloud subscription, Apple Intelligence · MCP — supports MCP and tool calls · Web search — available on OpenCat Cloud and select providers · System-wide translation — select text in any app for instant AI translation · Content rendering — supports LaTeX formulas, Markdown, and code highlighting · Cross-platform — natively built for Mac, iPhone, and iPad · Data privacy — stored locally, synced across devices via iCloud [Pro Features] · AI Keyboard — invoke AI right in the text field of any app to polish or reply in one step · OpenCat Cloud subscription provides access to all major models [A Variety of Models] · OpenCat Cloud — fast access to leading models · Local models — one-tap download of open-source models for offline use, accelerated by Apple silicon · BYOK — use your own API Key, including Coding Plan · System models — supports Apple Foundation Models [OpenCat Cloud — Ready to Use, No Setup] · No sign-up, zero configuration, all major models supported · 50+ models — ChatGPT, Claude, Gemini, Grok, DeepSeek, GLM, MiniMax, Kimi, Qwen, Doubao, and more, all in one place · Online search supported [System-Level AI Translation] Set OpenCat as your default translation app to translate selected text directly in Safari, Mail, Notes, and any other app. Powered by large language models, translations are natural and fluent — far superior to traditional translation engines. [Local Models, Offline Inference] · One-tap download — popular open-source models like Llama, Qwen, and Gemma · Apple silicon acceleration — built on Apple's official MLX framework, fully leveraging GPU performance for fast, energy-efficient inference · Fully offline — works without internet, conversation data never leaves your device [Use Your Own API Key] · 25+ providers supported — OpenAI, Claude, Gemini, DeepSeek, Kimi, Qwen, Doubao, ERNIE, and more [Contact Us] Email: support@dreamoon.ai Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy & Third-party AI Service Privacy Policy https://opencat.app/privacy

About

ChatMate+

This AI-powered chat application enhances conversations and productivity. It acts as a writing assistant, coding helper, counselor, teacher, and translator, offering intelligent replies and creative inspiration.

Highlights
  • Intelligent AI chat
  • Writing enhancement
  • Code debugging and optimization
  • Psychological counseling
  • Knowledge answers and teaching
  • Creative writing inspiration
  • Multi-language translation
Read full description

ChatMate is a chat application based on Open AI GPT-3 technology that provides intelligent replies based on your chat content, making your conversations more convenient and efficient. ChatMate is versatile and can meet various needs. For example, it can serve as a writing assistant to enhance your writing efficiency and quality. As a software engineer, it can help you solve development problems such as syntax errors, code optimization, and debugging. It can also serve as a counselor to listen to your thoughts and provide professional psychological counseling and support. As a teacher, it can provide knowledge answers and teaching suggestions, making your learning more efficient and enjoyable. As a novelist, it can provide creative inspiration and writing advice to make your novel more vivid and appealing. It can also serve as a language translator to accurately translate multiple languages. Additionally, ChatMate can also play various roles, such as a doctor, financial analyst, SEO expert, debater, nutritionist, stylist, chef, fitness coach, makeup artist, yoga instructor, babysitter, emotional analyst, astrologer, dream interpreter, career consultant, terminal interpreter, philosopher, etc. Download ChatMate now and configure your Open AI API Key to start a new intelligent chat experience! If you have any suggestions, please rate and leave a message or send an email to leo@chat-mate.app for feedback. This will help us continuously optimize the product and improve the user experience.

Screenshots

OpenCat4 screens
ChatMate+4 screens

Verdict

The call

The clearest difference is rating: OpenCat at 4.6 against ChatMate+'s 4.0. OpenCat also leads on ratings volume (851 vs 1). ChatMate+'s advantage is review sentiment (100% vs 65%) and in-app purchases (none vs 4). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OpenCat sells 4 in-app purchases, starting at $3.99 per month. ChatMate+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OpenCat holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: OpenCat has 851 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 65% of OpenCat's written reviews are positive against 100% of ChatMate+'s, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard6 real differences · 4 level
OpenCat versus ChatMate+: the parameters behind the verdict, then further details
ParameterOpenCatChatMate+
PriceFreeFree
Rating4.6 (851 ratings) — better4.0 (1 ratings)
Positive reviews64.6% of reviews100.0% of reviews — better
Number of ratings851 — better1
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.014.0 — better
Further details — not scored
Size96 MB20 MB
Age rating17+17+
DeveloperEarly Moon, LLC佩佩 杨

Customer experience

OpenCat

All ratings846 ratings
Positive91.3%
Neutral2.1%
Negative6.6%
Written reviews195 reviews
Positive64.6%
Neutral11.3%
Negative24.1%

ChatMate+

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

OpenCat

Reported bugs

6 issues
  • Streaming response disruptions
  • Disappearing API key input fields
  • Inconsistent Markdown rendering
  • Keyboard extension not working as expected
  • Sync issues between devices
Show 1 more
  • Crashes and freezes when handling large inputs

Requested features

7 requests
  • Support for more AI models (e.g., Ollama, Groq)
  • Markdown rendering for chat responses
  • Ability to upload images and files
  • Customizable keyboard extensions
  • Background task support for long-running queries
Show 2 more
  • Prompt library and sharing functionality
  • Integration with other productivity apps (e.g., Shortcuts)

ChatMate+

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

OpenCat

Subscriptions2
  • Cloud AI3 Days trial$3.991 Month
  • Cloud AI$24.991 Year
One-time2
  • Tokens Package$5.99
  • OpenCat Pro$9.99
None

ChatMate+

No in-app purchases

Questions

Is OpenCat free?
OpenCat is free to download, with in-app purchases available.
Is ChatMate+ free?
ChatMate+ is free to download, with no in-app purchases.
Which has better reviews, OpenCat or ChatMate+?
OpenCat is rated higher. OpenCat averages 4.6 out of 5 from 851 ratings, while ChatMate+ averages 4.0 from 1 ratings.
Do OpenCat or ChatMate+ have ads?
Neither OpenCat nor ChatMate+ shows ads.
Which is updated more often, OpenCat or ChatMate+?
OpenCat ships an update weekly, and ChatMate+ weekly. Most recently, OpenCat was updated on October 30, 2026 and ChatMate+ on October 25, 2026.

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