Both tools help you find keyword opportunities. They handle everything after that differently. Here's an honest breakdown — including when Semrush is the better choice.
This isn't a slight discount. It's a fundamentally different price point for a different audience.
The real difference between these tools isn't what they measure. It's what you do after you open them.
Log in → run Keyword Gap report → filter by difficulty, volume, intent → pick one keyword → research SERP → write a brief → write or commission the article → add schema → publish. That's the real Semrush workflow for a solo founder. It takes hours, and it requires knowing what to look for at each step.
3–5 hours per article, assuming you know SEO well enough to make good decisions at each step.
Monday morning, your dashboard has 4–12 pre-filtered keyword gaps with a "Generate draft" button next to each. Click one. Read the draft. Spend 20 minutes adding your specific voice, examples, and opinions. Copy to your CMS. Publish. That's the full workflow — every week, automatically.
20–30 minutes per article. No SEO background required — the research, filtering, and brief are already done.
Semrush is the right tool if you have an SEO person who can turn data into action, if you need PPC and backlink data, or if you're running multiple client sites. WriteGap is the right tool if you're a solo founder who wants one great article per week without hiring an SEO agency or spending your Tuesdays in spreadsheets.
Most solo SaaS founders who sign up for Semrush don't use it consistently. WriteGap is designed around the constraint that you have 20 minutes, not 20 hours.
For most solo SaaS founders: yes, for the content use case. Semrush's keyword gap analysis, keyword difficulty scores, and competitor research are the parts founders actually use — and WriteGap covers all of that automatically. What WriteGap doesn't cover: PPC research, backlink auditing, technical site audits, and rank tracking across your full domain. If you use those features regularly, you need Semrush (or a specialist tool for each).
Semrush has an AI writing assistant in its ContentShake product (separate subscription, starting at ~€60/month). It generates content based on a keyword you provide. The difference: you still have to pick the keyword, judge the opportunity, and start the process yourself. WriteGap delivers the curated keyword list every Monday and chains directly into the draft — no manual steps between "brief" and "article".
WriteGap uses DataForSEO, which sources volume and difficulty data from the same provider underlying many SEO tools. For the use case of finding which keyword gaps to target each week, the data quality is comparable. If you need sub-1% accuracy for large-scale PPC campaigns or competitive market mapping, Semrush's proprietary data is more comprehensive.
WriteGap automatically detects your competitors from your product description, but you can override them. Add, remove, or swap any competitor in Settings — the next Monday brief will use your updated list. You're not locked into the auto-detected set.
Basic (€14.99/mo) if you're publishing in one language and want to see how it works before committing. Growth (€29.99/mo) if you're targeting multiple markets or want 12 gaps per week instead of 4. Both plans have the same 7-day money-back guarantee.
If you're a solo founder who wants to publish one great article per week without an SEO background — WriteGap was built for you. From €14.99/month.
7-day money-back guarantee · Cancel anytime · No SEO expertise required