Liner
8.1#3 in ai research assistantsFrom $14.99 a monthFree planAndroidiOSWebAPI
VisitLiner vs SciSpace
What both publish
| Fact | Liner | SciSpace |
|---|---|---|
| Browser extension | The Chrome extension can search, summarize, highlight, and bookmark webpages, PDFs, and YouTube videos. | The Chrome extension summarizes highlighted PDF text, chats with PDFs, saves papers to the library and generates citations. |
| Company facts | LinkedIn lists Liner as privately held, founded in 2015, headquartered in San Francisco, and employing 51–200 people. | LinkedIn lists SciSpace as privately held, founded in 2016, headquartered in Bangalore and employing 11–50 people. |
| Headquarters | Seoul, Republic of Korea | Milpitas, California, USA |
| Notable news | Liner announced Actions MCP on September 29, 2026, describing a single connection to roughly 1,100 external applications. | SciSpace announced on LinkedIn in October 2026 that Advanced and Max plans receive unlimited agent usage. |
| Rating on Apple App Store | 4.4 out of 5 from 1.4K ratings | 2.6 out of 5 from 11 ratings. |
| Rating on Chrome Web Store | 4.4 out of 5 from 6K ratings | 4.4 out of 5 from 144 ratings. |
| Rating on Trustpilot | 3.0 out of 5 from 3 reviews | 4.3 out of 5 from 405 reviews. |
Liner plans
- FreeFree
- Pro annual$14.99 a month
- Pro$17.99 a month
- Team$26.99 a month
- Max annual$29.99 a month
- Max$35.99 a month
SciSpace plans
- BasicFree
- Team$12 a month
- Premium$12 a month
- Researcher$20 a month
- Advanced$70 a month
- Researcher annual$96 a year
Pick Liner if…
Liner suits professionals who need cited AI search, academic research tools, or AI-assisted drafting and document export. Its file-based research tools and team workspace may fit users working with collections of sources or collaborators.
Pick SciSpace if…
SciSpace suits students, researchers, and writers who need tools for finding papers, reviewing PDFs, or drafting scientific writing. Its browser extension and iOS app offer additional ways to work with literature.