# PhobiaBlocker vs Sider

PhobiaBlocker records 0 monthly visits with — month-over-month growth and Free pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.

| Metric | [PhobiaBlocker](https://openaitools.app/tool/phobiablocker) | [Sider](https://openaitools.app/tool/sider) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/phobiablocker/dglbodgngpkmgceoiihoaopibimkihnb | https://sider.ai |
| Categories | AI Image Recognition, AI Image Detector, AI Models, AI Detector | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader |
| Pricing Model | Free | Freemium |
| Monthly Visits | 0 | 2,644,740 |
| MoM Growth Rate | — | -10.6% |
| Primary Market | Global | United States |
| Direct Visits | 0 | 1,699,535 |
| Review Score | 3.2 | 4.5 |
| Saved Count | 0 | 31 |
| Supported Platforms | Browser Extension | Website |

## PhobiaBlocker

PhobiaBlocker is a Chrome extension built for people who want to browse the web without unexpectedly running into images that trigger a phobia. You pick the objects you want hidden from a long list of real-world categories derived from ImageNet classes, and the extension uses machine learning models running locally on your machine to detect and block matching images as pages load. Because the analysis happens on your own computer, no browsing data is sent to an external endpoint.

Beyond automatic blocking, PhobiaBlocker gives you fine-grained manual controls. You can block or unblock a specific image from the right-click menu, block every image on a site, or write regex rules that automatically trust or block images based on their src attribute. Trusted website lists and a local decision cache help keep browsing fast, and a quick option lets you block spider-like and insect-like images in one click.

The extension supports a speed-versus-accuracy tradeoff, risk management settings, and both dark and light themes. It is designed around privacy by default: images are analysed locally, caches can be disabled, and the developer states that no data is collected or sold to third parties.

**Pricing & Plans:** Free to install and use from the Chrome Web Store. No paid tiers or subscriptions are advertised.

- **Automatic on-device image blocking:** Machine learning models running locally detect and block images of the real-world objects you choose, without sending browsing data anywhere.
- **Manual block and unblock:** Right-click any image to block or restore it instantly, or block every image across a site when you need a stronger filter.
- **Regex trust and block rules:** Add rules that automatically trust or block images whose src matches a pattern, with blocking taking priority.
- **Customisable accuracy and risk settings:** Tune the speed-versus-accuracy tradeoff and risk management of the automatic blocker, and pause it while keeping manual blocking active.
- **Privacy-first local cache:** Images are analysed on your computer and only stored as non-cryptographic hashes in a local cache that can be disabled in the options.

**Strengths:** Analysis runs locally on your device, so browsing data is not uploaded; Flexible control through automatic blocking, manual right-click actions and regex rules; Adjustable speed/accuracy tradeoff and dark mode; Free with no account required

**Limitations:** Only real-world ImageNet object classes are supported, so abstract phobias like heights or gore cannot be blocked; Does not analyse canvas elements or CSS background-image content; Images may briefly flicker before they are temporarily blocked in rare cases

[Profile (Markdown)](https://openaitools.app/tool/phobiablocker.md)

## Sider

Sider's premise is that you should not have to leave the page you are reading to use an AI assistant. Its sidebar overlays the browser, detects the content in view, and responds with chat, summaries, translations or explanations using frontier models from multiple providers. The result is a lightweight research and reading workflow: highlight a paragraph, ask for a simpler explanation, translate a PDF and keep the original in sight.

Recent versions push Sider beyond chat. Sider Hand is a browser agent that works across real websites and uses your logged-in sessions to carry out multi-step jobs such as comparing prices while shopping, filling forms, doing cross-site research or triaging a Gmail inbox. Sider Code goes the other way, letting you instruct changes to a website's appearance or behaviour in plain language and preserving the customisation for next time. A Create module generates images, videos, slides and documents from the same panel.

Pricing moves from a limited free tier to credit-based paid plans aimed at heavier users. Lower plans suit occasional chat, summarisation and translation, while higher tiers add a dedicated cloud computer that keeps the browser agent running around the clock and a larger monthly credit allowance. Sider ships as browser extensions for Chrome and Edge plus desktop and mobile apps for macOS, Windows, iOS and Android, and is used by a very large installed base.

**Pricing & Plans:** Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans.

- **AI sidebar on any page:** A persistent panel that reads the page you are on and answers follow-ups with GPT, Claude or Gemini without copying content into another tab.
- **Summarise and chat with documents:** Summarise long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
- **Translation and read-aloud:** Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
- **Sider Hand browser agent:** Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.
- **Sider Code page customisation:** Describe a change in plain words and have Sider restyle or simplify any website, remembering the modification for future visits.

**Strengths:** Works inside the browser you already use, with no context switching; Access to multiple frontier models from one subscription; Strong reading toolkit: PDF chat, YouTube summaries, translation and read-aloud; Increasingly capable agent features for multi-step browser tasks

**Limitations:** Useful credits run out quickly on the free and lower tiers; Model availability and quota rules change over time, so expectations must be checked per plan; Some agent and code features depend on a cloud machine and heavier plans

[Profile (Markdown)](https://openaitools.app/tool/sider.md)

## Frequently Asked Questions

### How do PhobiaBlocker and Sider compare in monthly traffic?

PhobiaBlocker has 0 monthly visits, while Sider has 2,644,740. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

PhobiaBlocker has a month-over-month growth rate of —; Sider has -10.6%.

### How does pricing compare?

PhobiaBlocker: Free. Free to install and use from the Chrome Web Store. No paid tiers or subscriptions are advertised. Sider: Freemium. Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) |
| 2 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) |
| 3 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools. | [.md](https://openaitools.app/tool/monica-ai.md) |
| 4 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features. | [.md](https://openaitools.app/tool/merlin-ai.md) |
| 5 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider. | [.md](https://openaitools.app/tool/harpa-ai.md) |
| 6 | [Quetta Browser](https://openaitools.app/tool/quetta-browser) | 226,049 | +54.2% | Free | Privacy-first mobile browser with built-in ad blocking and video downloads | [.md](https://openaitools.app/tool/quetta-browser.md) |
| 7 | [Glarity](https://openaitools.app/tool/glarity-summarize-google-and-youtube) | 188,823 | -49.6% | Freemium | Summarize YouTube, Google, and any page with AI — free in your browser | [.md](https://openaitools.app/tool/glarity-summarize-google-and-youtube.md) |
| 8 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider. | [.md](https://openaitools.app/tool/kome-ai.md) |
| 9 | [Voilà — AI Assistant, Chat and Writer](https://openaitools.app/tool/voil-chatgpt-browser-assistant) | 152,170 | -4.8% | Freemium | Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools. | [.md](https://openaitools.app/tool/voil-chatgpt-browser-assistant.md) |
| 10 | [OctoEverywhere](https://openaitools.app/tool/octoeverywhere) | 147,672 | -5.6% | Freemium | Free cloud remote access and AI print-failure detection for 3D printers | [.md](https://openaitools.app/tool/octoeverywhere.md) |

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Source: https://openaitools.app/compare/phobiablocker-vs-sider

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)