Both tools optimise content against competitor data. The difference sits in Turkish and in billing: YouContent360 writes a separate measurement layer for Turkish and charges in Turkish lira. Surfer is ahead on AI search visibility tracking and on its integration ecosystem. Every row below cites an open source.
Last verified:
| Criterion | YouContent360 | Surfer SEO |
|---|---|---|
| Currency and invoicing | Subscriptions are charged in Turkish lira; corporate invoices are issued in Türkiye against a TCKN/VKN, with 20% VAT shown separately. | All plans are priced in USD — Discovery $49/mo, Standard $99/mo, Pro $182/mo. The pricing page states no option for lira billing or for invoicing against a Turkish tax ID. Source: surferseo.com (2026-09-06) |
| Turkish readability measurement | Readability is scored with the Ateşman formula, and syllables are counted from vowels the way Turkish works rather than through an English syllable library. | The public help centre states no Turkish-specific readability formula (checked 2026-09-06). Source: docs.surferseo.com (2026-09-06) |
| Turkish morphology support | Passive voice is detected from Turkish suffix patterns and flagged above a 15% ratio; term matching runs through İ→i and I→ı normalisation first. | The public help centre states no Turkish passive-voice detection or İ/I normalisation (checked 2026-09-06). Source: docs.surferseo.com (2026-09-06) |
| Turkish marketplace SERP filter | Sahibinden, n11, Hepsiburada, Trendyol and GittiGidiyor results are dropped before scraping, so the analysis reads content pages only. | The public documentation states no SERP filter specific to Turkish marketplace domains (checked 2026-09-06). Source: docs.surferseo.com (2026-09-06) |
| Post-generation fabricated-attribution check | A deterministic layer runs after generation and removes statistics attributed to named institutions that do not appear in the facts you supplied. | The free tools include an AI Humanizer and an AI Detector; no post-generation layer that checks institutional attributions against your sources is documented. Source: surferseo.com (2026-09-06) |
| Trial terms | 14 days with no credit card; the trial includes 5 article generations, 10,000 content credits and 1 project. | The pricing page lists plans as monthly and annual subscriptions; no card-free free trial is stated on that page. Source: surferseo.com (2026-09-06) |
| AI search visibility tracking | The product covers the analysis, generation and review flow; it offers no AI search visibility or rank tracking. | AI Tracker monitors visibility across ChatGPT, Gemini, Perplexity and Google AI Overviews, and a separate AI Search Analytics plan is sold at $158/mo. Source: surferseo.com (2026-09-06) |
| Integrations and extension ecosystem | Export covers five formats: raw HTML, clean HTML, plain text, DOCX and Markdown. There is no direct CMS publishing and no browser extension. | A Google Docs integration, a Chrome extension called Keyword Surfer and a public API are offered. Source: surferseo.com (2026-09-06) |
It makes sense when most of your output is Turkish and your finance team needs a lira invoice. Readability is scored with Ateşman and passive voice is read from Turkish suffixes, while billing stays in lira. If you publish mainly in English or need rank tracking, Surfer remains the better fit.
Flesch-based formulas count syllables using English assumptions. In Turkish a syllable equals a vowel, so the same text scores differently in the two tools. YouContent360 uses the Ateşman formula together with a vowel-based syllable counter, which puts the score into a meaningful range for Turkish text.
Every row is written by reading the source page linked in the table, and the last verification date sits at the top of this page. When the competitor changes a price or a feature, the affected row is re-read and updated. A claim we cannot verify is never added, and limited scope is stated plainly.