How do their growth rates compare?

Explain Selected has a month-over-month growth rate of —; SciSpace has +8.6%.

How does pricing compare?

Explain Selected: Free. Free. The extension is offered at no cost in the Chrome Web Store, with no in-app purchases listed. SciSpace: Freemium. Freemium. A free tier with limited usage sits alongside paid Premium (~$12/month billed annually), Advanced (~$70/month) and Max (~$160/month) plans; monthly billing is higher. Enterprise pricing is custom. All plans advertise a 24-hour money-back guarantee, and annual billing carries a discount.

What are alternatives to Explain Selected and SciSpace?

Other tools in related categories include ChatGPT, Semantic Scholar, Consensus, Language Reactor, Elicit.

Head-to-Head Benchmark

Explain Selected vs SciSpace

Explain Selected records 0 monthly visits with — month-over-month growth and Free pricing. SciSpace records 4,464,111 monthly visits with +8.6% growth and Freemium pricing.

Explain SelectedFree

Highlight any text, get the right definition and a plain-language explanation

Monthly Visits

0

MoM Velocity

—

Top Market

🌐 Global

View Explain Selected Analysis

chromewebstore.google.com

SciSpaceFreemiumTraffic Leader

AI research platform for reading, understanding and writing scientific papers

Monthly Visits

4.46M

MoM Velocity

+8.6%

Top Market

🇺🇸 United States

View SciSpace Analysis scispace.com

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	Explain Selected	SciSpace
Official Domain	chromewebstore.google.com	scispace.com
Pricing Model	Free	Freemium
Monthly Visits	0 (0)	4.46M (4,464,111)

MoM Traffic Delta	0 (—)	+355.38K (+8.6%)

Primary Market & Share	🌐 Global (—)	🇺🇸 United States (13.2%)

Direct Visits / mo	0	1.32M

User Rating	3.8	4.6

Supported Platforms	Browser Extension	Website

Explain Selected

Highlight any text, get the right definition and a plain-language explanation

Context-aware definitions

ChatGPT infers which sense of a word fits the sentence you highlighted, instead of dumping every dictionary entry at once.

Merriam-Webster definitions and audio

Matching dictionary entries and audio pronunciation are pulled in so you can hear as well as read the word.

One-click purple circle

Select text and click the purple circle that appears — no popup windows, no copy-pasting into a separate tab.

Personal saved list

Add words you want to remember to a personal list so you can review them later.

Strengths & Pros

+Resolves ambiguous words by using the surrounding sentence rather than guessing
+Combines AI explanations with established Merriam-Webster definitions and audio
+Works inline on any web page with a single click and no context switching
+Saving and sharing selections make it useful for building vocabulary over time

Limitations

Frequently Asked Questions: Explain Selected vs SciSpace

Explain Selected has 0 monthly visits, while SciSpace has 4,464,111. Traffic estimates describe audience size, not product quality.

More Head-to-Head Matchups

ChatGPT vs Explain Selected

6.05B visits/mo

ChatGPT vs SciSpace

6.05B visits/mo

Explain Selected vs Semantic Scholar

8.2M visits/mo

SciSpace vs Semantic Scholar

12.66M visits/mo

Consensus vs Explain Selected

6.01M visits/mo

Consensus vs SciSpace

10.48M visits/mo

Best Alternatives to Explain Selected & SciSpace (12)

SciSpace

AI research platform for reading, understanding and writing scientific papers

Chat with PDF

Open or upload a paper and ask questions, get plain-language explanations of highlighted passages, and pull out methods, results and limitations conversationally.

Literature Review and paper search

Search a large scholarly index spanning Google Scholar, PubMed and arXiv, then generate structured literature reviews and related-work sections from what you find.

Writing, paraphrasing and citations

An AI Writer for drafts, a paraphraser for academic tone, and a citation generator that formats references in popular styles.

Extract Data and AI Detector

Turn tables and results in a paper into structured data, and check whether a manuscript reads as AI-generated with a built-in detector.

Strengths & Pros

+Combines paper discovery, reading, writing and citation tools in one place instead of five separate subscriptions
+Conversational explanations of difficult passages are genuinely useful for non-native English readers and cross-disciplinary work
+Covers widely used scholarly sources such as Google Scholar, PubMed and arXiv
+Free tier plus a Chrome extension make it easy to evaluate before paying

Limitations

–Credit-based limits can be confusing, and heavy users report hitting caps on the cheaper plans
–Model access varies by tier, so the cheapest paid plan does not get the strongest reasoning models
–AI-generated reviews and paraphrases still need careful human checking for accuracy and citation integrity

01

ChatGPT

6B/mo

SpecialistOffers broad general reasoning and document upload capabilities, but lacks specialized academic indexing and citation databases.

AI ChatbotFreemium+2.2%

02

Semantic Scholar

8.2M/mo

Free / Open-sourceProvides a massive free index of scholarly literature with citation graphs, but lacks built-in interactive paper reading assistants.

AI Research ToolFree+5.8%

Semantic Scholar search interface showing AI TLDR summaries and citation context for a scientific paper

03

Consensus

6M/mo

Provides evidence-based answers extracted directly from peer-reviewed papers, though less of an all-in-one reading workspace.

AI Search EngineFreemium49% direct

Consensus search results with a Consensus Meter showing scientific agreement on a research question

#3

04

Language Reactor

1.9M/mo

Learn languages from Netflix, YouTube, and real-world texts with dual subtitles and AI

AI Language LearningFreemium+0.6%

05

Elicit

1.8M/mo

Stronger automated data extraction and systematic review synthesis, but less focused on interactive PDF annotation than SciSpace.

AI Research ToolFreemium+3.1%

06

Jenni

1.5M/mo

SpecialistFocuses heavily on assisted academic drafting and autocomplete, whereas SciSpace centers more on reading and analysis.

AI Writing AssistantsFreemium+5.2%

07

Scite

842K/mo

Excels at tracking citation contexts and how papers cite each other, but has less robust general PDF chat features.

AI Research ToolFree Trial, Contact for Pricing+1.1%

08

Paperguide

372K/mo

Streamlines literature searches and reference management like SciSpace, but with a distinct citation workflow.

AI Research ToolFreemium33% direct

Paperguide interface showing AI Search results with source-linked evidence and a systematic review screening table

09

CastReader

56K/mo

Read aloud webpages, PDFs, Kindle books and AI answers with synced highlighting

AI Text-to-SpeechFreemium+9.8%

CastReader browser extension reading a webpage aloud with the current word highlighted and Read & Explain annotations on screen

10

ResearchPal

55.2K/mo

Searches academic sources and generates literature reviews, but lacks some of SciSpace's advanced collaborative workspace features.

AI Research ToolFreemium41% direct

ResearchPal agent panel answering an academic question with linked citations and paper cards

11

Voice Out

39.7K/mo

Turn any webpage, PDF, Doc or ebook into natural-sounding speech in 60+ languages

AI Text-to-SpeechFreemium71% direct

Voice Out browser extension showing a webpage being read aloud with speed controls and a voice picker

12

SciSummary

38.9K/mo

SpecialistCondenses papers into structured summaries quickly, but lacks SciSpace's full interactive research workspace and citation management.

AI Article SummarizerFreemium, Free Trial, Paid23% direct

SciSummary homepage showing AI summarization of scientific articles and research papers

#1

Visit

ChatGPT

6B/mo+2.2%

Official

SpecialistOffers broad general reasoning and document upload capabilities, but lacks specialized academic indexing and citation databases.

AI Chatbot73% direct

Freemium

#2

Visit

Semantic Scholar

8.2M/mo+5.8%

Official

Free / Open-sourceProvides a massive free index of scholarly literature with citation graphs, but lacks built-in interactive paper reading assistants.

AI Research Tool23% direct

Free

Visit

Consensus

6M/mo

Official

Provides evidence-based answers extracted directly from peer-reviewed papers, though less of an all-in-one reading workspace.

AI Search Engine49% direct

Freemium

Visit

Language Reactor

1.9M/mo+0.6%