Comparison
Bikma and Rankscale both track brand mentions and citations in AI answers, but they meet different needs: Rankscale is a GEO tool with a low entry cost, many models and a page audit; Bikma is a platform with five analysis dimensions, EU data, a method validated with two universities and Fortop's consulting in support.
Choose Rankscale if you are looking for an inexpensive GEO tool to start tracking many models and run page audits. Choose Bikma if you want more structured, European measurement, with sources, sentiment and Fact Checking and Fortop's consulting support.
Rankscale is a platform for AI rank tracking and Generative Engine Optimization. It tracks mentions, citations and sentiment in AI-generated answers on several engines, including AI Overviews, AI Mode, Gemini, ChatGPT, Perplexity, Grok and Copilot, and on many models. It offers a Visibility Score, analysis of cited domains, a citation rate, a sentiment score and a page audit with more than 90 checks. It provides a Looker Studio connector and an API. Plans start at around €20 with a free trial, on Pro, Agency and Enterprise tiers.
Bikma covers Question Analysis, Share of Voice, External Sources, Sentiment and Fact Checking and measures daily, with a methodological framework born of research with the University of Pisa and the University of Insubria and presented at The Web Conference. The Prompt Probability Index weights prompts by their probability, so Share of Voice reflects the questions users actually ask. Data stays in the EU and prompts are in the native language. The most substantial difference, though, is support: with Bikma comes Fortop, which pairs the platform with strategic consulting.
| Bikma | Rankscale | |
|---|---|---|
| Analysis dimensions | Five: Question Analysis, Share of Voice, External Sources, Sentiment and Fact Checking (Fact Checking on the Corporate plan) | Visibility Score, cited domains, citation rate, sentiment, audit |
| Models | 2 to 4 on the directly activated plans (ChatGPT, AI Overviews, AI Mode, Gemini); all of them, including Perplexity, Copilot, Claude and Grok, on Corporate | AI Overviews, AI Mode, Gemini, ChatGPT, Perplexity, Grok, Copilot and many models |
| Method | Prompt Probability Index, validated with two universities | Proprietary Visibility Score |
| Support | Strategic consulting from Fortop | Self-service tool |
| Entry price | From €49 a month (Starter, billed annually; €59 monthly), 7-day free trial | From around €20, free trial |
Rankscale suits those who want to get into GEO with limited spend, track many models and have a self-service page audit. Bikma suits those looking for more structured, validated measurement, with five analysis dimensions, EU data and, above all, Fortop's consulting, which turns data into strategy.
Rankscale has a very low entry price and a self-service setup. Bikma offers five analysis dimensions, a university-validated method, EU data and Fortop's consulting in support: it is a more structured offer, designed for those who want to move from data to action.
Yes. Rankscale provides a sentiment score; Bikma classifies the sentiment of mentions as positive, neutral or negative and combines it with source analysis and Fact Checking.
Bikma concentrates on measuring AI visibility across five dimensions. Optimisation work on pages comes from Fortop's consulting, starting from the data the platform collects.