
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Reflection records 65,238 monthly visits with -8.4% month-over-month growth and Freemium, Free Trial pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.

An AI journaling companion that listens, responds, and remembers your story
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | reflection.app | sider.ai |
| Pricing Model | Freemium, Free Trial | Freemium |
| Monthly Visits | 65.24K (65,238) | 2.64M (2,644,740) |
| MoM Traffic Delta | -5.96K (-8.4%) | -314.2K (-10.6%) |
| Primary Market & Share | 🇺🇸 United States (21.7%) | 🇺🇸 United States (13.3%) |
| Direct Visits / mo | 35.47K | 1.7M |
| User Rating | 4.3 | 4.5 |
| Supported Platforms | Website | Website |

An AI journaling companion that listens, responds, and remembers your story
Instant Chat replies on the next line as you write, and one-tap actions like Go Deeper or Get Perspective give you a fresh angle without leaving your journal page.
Talk out loud in a real-time back-and-forth and save the transcript, or simply dictate an entry and let Reflection transcribe it.
Natural-language search across everything you have written, so you can ask about patterns, people or a specific period and get a plain-language answer.
Structured programs on gratitude, anxiety, relationships and productivity, plus journaling templates, daily reminders and nine light/dark color themes.
AI sidebar and browser agent for reading, writing and research
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 long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.

SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.

Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Science-backed meditation, sleep and mental health support in one app
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.

Free psychological tests with an AI mental coach who explains your results
Free psychological tests with an AI mental coach who explains your results
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.

A 24/7 AI mental health companion that remembers your story
A 24/7 AI mental health companion that remembers your story

Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.

An AI journal that listens, remembers, and helps you grow
An AI journal that listens, remembers, and helps you grow