Comparison

OpenCat vs 暗礁助手

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

Head to head
About

OpenCat

Access multiple AI models for chat, writing, translation, and search. Offers system-wide translation, content rendering, and local model support for offline use. Pro features include an AI keyboard for seamless integration into any app.

Highlights
  • Multiple AI model options (local, API, cloud)
  • System-wide AI translation
  • Content rendering (LaTeX, Markdown, code)
  • Cross-platform (Mac, iPhone, iPad)
  • Local models for offline use
  • AI Keyboard for in-app AI assistance
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

暗礁助手

Features
Read full description

在 iPhone 和 Apple Watch 上轻松使用 AI 对话服务,并支持深度思考。 暗礁助手让您能够在任何网络环境下使用 AI 对话服务,并能够自动为您的对话生成标题并保存。界面简洁易用。 在 Apple Watch 上也能够像在其他设备上一样使用暗礁助手,让您随时随地获得答案,或者和 AI 聊天。 Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 条款与条件:https://darock.top/gassist/ti

Screenshots

OpenCat4 screens
暗礁助手3 screens

Verdict

The call

The clearest difference is rating: 暗礁助手 at 5.0 against OpenCat's 4.6. OpenCat's advantage is ratings volume (855 vs 1) and review sentiment (65% vs 43%). On price, ads, in-app purchases 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 and 暗礁助手 sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

暗礁助手 holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: OpenCat has 855 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 43% of 暗礁助手's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

OpenCat ships an update weekly, 暗礁助手 monthly. The most recent releases landed on November 12, 2026 and November 4, 2026 respectively.

Scorecard4 real differences · 6 level
OpenCat versus 暗礁助手: the parameters behind the verdict, then further details
ParameterOpenCat暗礁助手
PriceFreeFree
Rating4.6 (855 ratings)5.0 (1 ratings) — better
Positive reviews64.6% of reviews — better42.9% of reviews
Number of ratings855 — better1
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, MaciPhone, iPad, Apple Watch
Requires iOS17.017.0
Further details — not scored
Size96 MB28 MB
Age rating17+12+
DeveloperEarly Moon, LLC浩源 陈

Customer experience

OpenCat

All ratings855 ratings
Positive91.1%
Neutral2.2%
Negative6.7%
Written reviews195 reviews
Positive64.6%
Neutral11.3%
Negative24.1%

暗礁助手

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive42.9%
Neutral14.3%
Negative42.9%

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)

暗礁助手

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
3 purchases

暗礁助手

Subscriptions3
  • 暗礁助手 Pro$0.991 Month
  • 暗礁助手 Max$0.991 Month
  • 暗礁助手 Ultra$2.991 Month

Questions

Is OpenCat free?
OpenCat is free to download, with in-app purchases available.
Is 暗礁助手 free?
暗礁助手 is free to download, with in-app purchases available.
Which has better reviews, OpenCat or 暗礁助手?
暗礁助手 is rated higher. OpenCat averages 4.6 out of 5 from 855 ratings, while 暗礁助手 averages 5.0 from 1 ratings.
Do OpenCat or 暗礁助手 have ads?
Neither OpenCat nor 暗礁助手 shows ads.
Which is updated more often, OpenCat or 暗礁助手?
OpenCat ships an update weekly, and 暗礁助手 monthly. Most recently, OpenCat was updated on November 12, 2026 and 暗礁助手 on November 4, 2026.

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