A: I'm not an expert on Accuranker but here are some differences I gathered from their site:

1. Nozzle allows for an unlimited number of competitors. --- Accuranker lets you monitor 10 competitors per domain.
2. Nozzle offers customized scheduling so you can track different keyword groups on any unique schedule that you want. --- Accuranker tracks only daily with the ability to manually refresh data more often than daily if needed.
3. Nozzle only tracks rankings on Google for now. --- Accuranker tracks rankings on 5 search engines.
4. Nozzle doesn't currently integrate with GSC or GA but that is on our roadmap. ---Accuranker currently does this.
5. Nozzle keeps visual screenshots of your SERPs forever. --- I'm unclear on what Accuranker does here.
6. Nozzle stores data for every result in the top 100 for every keyword pull so you can analyze all data from the SERPs to see things like which listings have sitelinks, price, review, and ratings schema markup, or extract all the People Also Ask questions, FAQ schema data, Related Searches, and People Also Search for data in addition to analyzing rankings for any and all SERP competitors. You can also analyze things like which companies have the most listings in local packs across your whole keyword set, which videos show up the most in Video packs, which domains and URLs own the most featured snippets, which SERPs serve up knowledge panels, etc. --- I don't believe Accuranker has this data.