Liner: AI Search with Sources

Contains adsIn-app purchases
3.9
4.25K reviews
500K+
Downloads
Content rating
Parental guidance
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About this app

Get reliable information with Liner AI Search Engine.
Liner is the AI search engine trusted by 10 million+ students and researchers worldwide. Built for academic research, Liner delivers accurate, source-backed answers you can trust.


[Why Liner?]

1. Credible Answers with References: Get answers from verifiable academic sources, including peer-reviewed papers.
2. Line-by-line citations: Every line of an answer includes a citation, so you always know where the information comes from.
3. AI Summaries: Simplify complex research papers, articles, and videos with clear AI-powered summaries and key takeaways.
4. Follow-up Questions: Explore deeper with smart follow-up queries, just like having your own AI copilot for research.

Try Liner on your desktop for deeper research workflows. All your data is synced across devices.

Upgrade to Liner Pro to access advanced AI models and powerful tools like Deep Research and file uploads.


[What's New]

1. Scholar mode
- Get answers only from trusted academic sources. Perfect for assignments, essays, and literature reviews.

2. One-click citation
- Instantly generate citations in APA, MLA, or Chicago style.

3. Upload an image
Take a photo of printed materials and ask questions about the content.


Liner is loved by 10,000,000+ students and researchers across 50+ countries.
Download Liner today and start your smarter research journey.
If you love Liner, please rate us on the App Store!
Updated on
Jul 29, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, Personal info and 3 others
This app may collect these data types
Location, Personal info and 6 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.9
4.01K reviews
Vihara Pasandul
July 28, 2025
I appreciate the AI's responses, but the app has several issues. It occasionally freezes, experiences lag, and has a slow touch response. (My device is mid-range, so I'm unsure how it performs on lower-spec devices.) If these issues are resolved, I will update my review accordingly.
1 person found this review helpful
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Liner
July 29, 2025
Thank you for your feedback. If you have any specific moments when the app froze or lagged (e.g. after certain actions), feel free to share them with us — that would help us troubleshoot more effectively.
Alita Bella
July 16, 2025
Liner is fantastic for streamlining my research! The ability to highlight web pages and PDFs directly has made my information gathering so much more efficient. I particularly love how easy it is to organize my highlights into folders."
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Daniel Calantes
August 29, 2024
The mobile version is disappointing. The desktop version is more than I ever needed. HOWEVER, the longer your prompt is on the mobile app, the longer the lags become and it gets to a point where it either crashes or just freezes. That is my main frustration with the mobile experience. Not sure why that happens but just so you know. Something needs to be fixed there.
2 people found this review helpful
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What’s new

[Scholar mode]

- Get answers only from trusted academic sources. Perfect for assignments, essays, and literature reviews.

[One-click citation]

- Instantly generate citations in APA, MLA, or Chicago style.

[Upload an image]

- Take a photo of printed materials and ask questions about the content.

Liner is loved by 10,000,000+ students and researchers across 50+ countries.

Download Liner today and start your smarter research journey.

If you love Liner, please rate us on the App Store!