Liner: AI search assistant

Research assistant for source-backed answers

Liner: AI search assistant is a productivity app for people who want help researching questions rather than a general-purpose chat window. It focuses on finding information, organising it into readable answers, and connecting claims with sources. The app brings several AI models into one research workflow, including GPT-4, Gemini and Claude, according to the supplied product information.

What it can handle

• Web research: Ask questions and receive answers built around referenced information, with an emphasis on factual queries.
• Video summaries: Use YouTube material as a source and pull out key points, including timestamped sections for moving through longer videos.
• File analysis: Upload documents and look for particular details without reading every page manually.
• Image-based questions: Use a photo to ask about an object, problem or piece of information in front of you.

Who it suits

Liner is aimed at students, researchers and professionals who regularly compare sources, review documents or extract information from videos. It is more useful for a question-and-evidence workflow than for open-ended creative writing. The option to move between text, images, videos and files also makes it a practical fit for mixed research tasks on a phone.

Listing snapshot

The app is published by Liner and sits in the Productivity category. It has a 4.16 rating from 4,403 reviews and records 500,000+ installs. Those figures indicate established use, but they do not replace checking how well a particular answer is sourced or whether the result matches your question. The supplied details do not include permission or advertising test results, so no claim is made about those checks here.