Ahrefs vs QuestionDB

Ahrefs is a web and API platform for SEO research, including keyword research, rank tracking, site audits, backlink analysis and competitor research. It also provides content tools, AI assistants and MCP access. Content Explorer can find web mentions and link prospects, while AI Content Helper supports content improvement. The free plan provides site data and fixes with limited access to Site Explorer and Site Audit. Paid plans start with Starter at $29 a month. Lite costs $129 a month and includes five projects, 750 tracked keywords, 100,000 monthly crawl credits and one user; its Site Audit allowance has a 25,000-page project maximum. Annual payment saves up to 17%. Enterprise costs $1,499 a month and requires an annual commitment; it includes SSO, two-factor authentication, ISO27001 certification, access management, audit logs and unlimited additional users. Ahrefs says its web index contains 170 trillion pages, tracks 41.9 billion keywords and filters 28.7 billion keywords; AhrefsBot crawls 8 billion pages daily. Founded in 2010, the company is headquartered in Singapore. Multilingual support is available five days a week.

QuestionDB is a web-based database of questions and SEO tools for developing content ideas. It finds questions and conversations from Reddit and Quora, and lists real-time data sources including People Also Ask, People Also Search, SERP, Reddit, and Quora. Keyword tools provide difficulty, competition level, CPC, and search volume metrics. Results can be viewed in Table, Card, or Tree formats, then exported as CSV or a tree image. Its homepage lists AI Outline & Meta, AI Content Analysis, and an AI Keyword Extractor. The free plan is free for 5 searches per month. Solo costs $9.99 a month, billed monthly, for 100 searches; Business costs $29.99 a month, billed monthly, for 400 searches; Enterprise costs $69.99 a month, billed monthly, for 1,000 searches. Paid plan details include search volume, keyword difficulty, CPC, and CSV and image export. The site provides a contact form. Its privacy policy says personal information is not sold, traded, or rented, while noting it may be shared with service providers and in specified legal or business circumstances.