QuestionDB vs Topicfinder in 2026: Audience question mining vs competitor-proven content topics
QuestionDB surfaces real questions from Reddit and Quora starting at $9.99 a month. Topicfinder crawls thousands of competitor domains to find content topics that are already proven to rank, starting at $39 a month.
QuestionDB
Topicfinder- QuestionDB mines questions from Reddit, Quora, Google PAA, and People Also Search. Topicfinder crawls thousands of competitor domains to surface pages that are already proven to earn traffic, an entirely different data source.
- Topicfinder generates AI-scored title variations for every topic it surfaces, flagging options that meet Google's length requirements as ready to use. QuestionDB has no title generation feature; its AI Outline Generator produces a structural brief instead.
- QuestionDB starts at $9.99/month for the Solo plan and includes a free tier with 5 searches per month. Topicfinder starts higher at $39/month but includes a free trial that requires no credit card.
- Topicfinder's Starter plan caps research at 100 competitors and 3,000 topics per day. QuestionDB caps at 100 searches per month on its Solo plan, a very different volume model since the two tools measure usage differently.
- Neither tool has an API. QuestionDB tops out at $69.99/month Enterprise; Topicfinder's published pricing tops out at $149/month Business, with Agency pricing available only by contacting the team.
- Topicfinder stores research in a shared cloud dashboard with tagging, archiving, and team workspace access from the Business plan up. QuestionDB has no team workspace or collaboration feature.
- QuestionDB adds search volume, keyword difficulty, and CPC data to its question results on paid plans. Topicfinder does not report keyword search volume at all; its results are filtered by actual competitor traffic instead.
QuestionDB and Topicfinder both help answer the same question, what should I write next, but they start from opposite ends of the evidence chain. QuestionDB starts from your audience, mining Reddit threads, Quora answers, and Google SERP features for the actual questions people are asking. Topicfinder starts from your competitors, crawling thousands of similar domains in parallel to surface pages that are already earning traffic, then scoring AI-generated titles on top of the results. QuestionDB is the cheaper entry at $9.99 a month with a genuine free tier; Topicfinder costs more at $39 a month but includes a free trial with no credit card required. Neither tool offers an API, so the pick comes down to whether your content gap is audience insight or competitive proof.
The tools at a glance
QuestionDB
Find low-competition keywords by mining questions from Reddit, Quora, SERP PAA, and People Also Search
QuestionDB treats questions as the unit of research rather than keywords. It pulls from Reddit threads, Quora answers, Google People Also Ask boxes, and People Also Search results, then lets you browse or search that combined set for topics relevant to your niche, closer to eavesdropping on real conversations than running a keyword expansion tool.
Paid plans attach search volume, keyword difficulty, and CPC data to each question, which helps you triage a long list of interesting-but-unproven questions down to the ones worth prioritizing. The AI Outline Generator then turns a selected question into a structured starting brief, and AI Content Analysis checks existing content against SERP competitors for gaps.
QuestionDB has no view into what competitors are already succeeding with; it works entirely from audience-side signals rather than proven traffic data. There is also no API and no team workspace, so it functions as a solo or small-team research tool rather than something built for collaborative content operations at volume.
| Feature | Free Free | Solo $9.99/mo | Business $29.99/mo | Enterprise $69.99/mo |
|---|---|---|---|---|
| Searches per month | 5 | 100 | 400 | 1,000 |
| Search volume data | ✗ | ✓ | ✓ | ✓ |
| Keyword difficulty | ✗ | ✓ | ✓ | ✓ |
| AI Outline Generator | ✗ | ✓ | ✓ | ✓ |
| API access | ✗ | ✗ | ✗ | ✗ |
Topicfinder
Multi-threaded competitive content research that crawls thousands of competitor pages, surfaces proven topics, and generates AI-optimized title suggestions in one tool
Topicfinder runs on one assumption: if a competitor page is already earning traffic, a similar topic on your site has a proven shot at doing the same. Feed it your domain and one competitor, and it crawls thousands of similar sites in parallel, pulling their top-performing pages directly into a single report, filtered by real traffic rather than estimated search volume.
The AI title generation layer sits on top of every surfaced topic, producing multiple variations scored by SEO potential and character length, with titles that meet Google's length requirements flagged as ready to use. Research lives in a cloud dashboard with tagging, archiving, and advanced filters, and the Business plan adds a shared team workspace for three seats.
The credit-based system is the main constraint: the Starter plan caps daily research at 100 competitors and 3,000 topics, workable for a solo operator but tight for an agency running several client sessions a day. There is no public API on any plan, so moving data anywhere else means exporting to CSV, and Agency-tier pricing requires a sales conversation rather than being published.
| Feature | Trial Free | Starter $39/mo | Business $149/mo | Agency Contact |
|---|---|---|---|---|
| Competitors searched per day | 100 | 100 | 500 | Custom |
| Topics found per day | 3,000 | 3,000 | 15,000 | Custom |
| AI title generation | ✓ | ✓ | ✓ | ✓ |
| Team workspace | ✗ | ✗ | ✓ | ✓ |
| Public API | ✗ | ✗ | ✗ | ✗ |
Head-to-head feature comparison
| Feature | QuestionDB | Topicfinder |
|---|---|---|
| Core methodology | Question mining across Reddit, Quora, and SERP features | Competitor-page crawling (find topics competitors already rank for) |
| Question mining (Reddit/Quora/PAA) | Yes (Reddit, Quora, Google PAA, People Also Search) | No |
| Competitor-page crawling | No | Yes (crawls thousands of competitor domains automatically) |
| AI title generation | No | Yes (scored by SEO potential and character length) |
| AI outline/brief generation | Yes (AI Outline Generator) | No |
| Search volume and CPC data | Yes (paid plans) | No (filtered by real traffic, not volume estimates) |
| Team workspace (multi-seat) | No | Business plan and up (3 seats) |
| Free tier / free trial | Yes (5 searches/month free) | Yes, no credit card required |
| API access | No | No |
| Starting price | Free, $9.99/mo Solo | $39/mo |
Which should you choose?
QuestionDBTopicfinderQuestionDBTopicfinderQuestionDBTopicfinderTopicfinderQuestionDB and Topicfinder both feed the same stage of content planning, deciding what to write, but they trust different evidence. QuestionDB trusts what your audience says it wants, pulled straight from Reddit and Quora conversations. Topicfinder trusts what has already worked for someone else, pulled from crawled competitor traffic. Topicfinder's output arrives closer to production-ready, with scored titles and a shared workspace for teams; QuestionDB's output arrives closer to raw insight, cheaper but requiring more editorial judgment to turn into a brief. Running both is not unreasonable for a well-resourced content team, since they rarely surface the same ideas.
Bottom line
Choose QuestionDB if your content bottleneck is not knowing what your audience actually wants explained, and the budget needs to stay under $10 a month. Choose Topicfinder if you would rather start from what a known competitor is already ranking for and want AI-scored titles ready to hand to a writer, especially if a small team needs to collaborate on the same research. Agencies with high daily research volume should budget for Topicfinder's Business or Agency tier rather than expecting the Starter plan's 100 competitors a day to cover multiple clients.
Frequently asked questions
Is QuestionDB or Topicfinder better for finding content ideas backed by real audience demand?
QuestionDB is the better fit for audience-driven ideas, since it mines actual questions from Reddit, Quora, and Google SERP features rather than working from competitor performance data. Topicfinder answers a different question, what content is already proven to earn traffic for a competitor, which is a useful complement rather than a substitute.
Does Topicfinder or QuestionDB include AI-generated titles for articles?
Topicfinder generates multiple AI title variations for every topic it surfaces and scores each one by SEO potential and character length, flagging ready-to-use options automatically. QuestionDB has no title generation feature; its AI Outline Generator produces a structural content brief instead of finished titles.
Which tool has a free way to test it, QuestionDB or Topicfinder?
Both offer a way to try before paying, but differently: QuestionDB has an ongoing free tier with 5 searches per month, while Topicfinder offers a free trial on the Starter plan with no credit card required, giving full access to 100 competitor searches a day for a limited period.
Is Topicfinder worth $39 a month compared to QuestionDB's cheaper Solo plan?
It depends on the research method you need: Topicfinder's $39/month Starter plan buys competitor-crawling at scale plus AI-scored titles, which suits teams that want proven, traffic-validated topics. QuestionDB's $9.99/month Solo plan is far cheaper but only covers question-based research with no competitor data or title generation, so it is the better deal only if audience questions are specifically what you are after.
Do QuestionDB or Topicfinder offer an API for pulling research into other tools?
Neither tool has a public API at any plan tier. QuestionDB tops out at the $69.99/month Enterprise plan and Topicfinder tops out at the $149/month Business plan, with both platforms limited to CSV or image exports for moving data elsewhere.
Can QuestionDB or Topicfinder track whether a brand is mentioned in ChatGPT or Google AI Overviews?
No, neither tool tracks AI-generated answers. QuestionDB is built around mining questions from Reddit, Quora, and Google SERP features, and Topicfinder is built around crawling competitor pages for proven traffic, so tracking brand mentions inside ChatGPT, Gemini, or AI Overviews would require a separate, purpose-built AI visibility tool.