How often does the free trial scan?
The trial (2 days of full AI visibility) runs 2 scans. The first starts the moment you click Start first scan. Each later scan runs about 24 hours after the one before, and never sooner than 20 hours, so a signup late in the evening still gets a real second day rather than a second scan minutes later.
Each scan asks the prompts you chose, up to 25, on ChatGPT, Perplexity, Claude and Google AI Overviews. When the last scan has finished, scanning pauses. Every answer stays in your workspace. Until then, the app shows when the next scan runs.
On the trial the questions are fixed once the first scan starts, so every trial scan asks the same set and the two days can be compared. Changing questions is part of a plan.
How often does a Custom plan scan?
Daily by default: one answer per tracked question, per engine, per UTC calendar day. If you want more, a Custom plan can scan hourly or at any frequency you choose; we set it at onboarding and size the plan to match. There is no cheaper weekly cadence to trade down to.
- Once each UTC day, at a fixed time, the scheduled run picks up every question your plan tracks for each brand.
- Each question goes to every engine on your plan: ChatGPT, Perplexity, Claude and Google AI Overviews, plus any add-on engine.
- Each question and engine pair gets exactly one job for that day, so a retry or a second trigger can never ask it twice or bill it twice.
- The answers, mentions and citations land in your AI Visibility report, and the app shows the last run and the next one.
Our own measurements show why the floor is daily: Perplexity changes about 27% of its answer set from one day to the next, and Claude about 9%. The figures and the reasoning are on Pricing and the engine trackers.
Can I run a scan now instead of waiting?
On a paid plan, yes. Run now asks today's questions for the brand you have selected, after a confirmation. It never runs every brand in the workspace at once.
Run now fills in the current run straight away rather than waiting for the schedule: if a question and engine already have an answer for the current run, that pair is skipped, so nothing is asked or billed twice. For more answers per day, choose an hourly or custom cadence on your plan. On the trial there is no Run now: the scans run on the schedule above.
How often can Proofsource detect day-to-day changes in AI answers?
As often as your cadence asks: once a day by default, hourly or more often if your Custom plan is set that way. A change only counts when it is larger than normal variation: every rate carries a 95% interval, and an alert fires only when the old and new intervals stop overlapping.
- Answers, mentions, sentiment and citations: every scheduled run.
- Competitor changes (a rival edits a page that matters) and New sources (a new page names you, a rival or your category): checked daily.
- Reviews: review-site ratings and mentions are read weekly.
How long until the answers appear?
The first scan is asked straight away on every engine and usually completes within a few minutes; the page fills in engine by engine as answers arrive. On the daily run, Claude's answers are collected in a batch and can land later in the day than the other engines. A failed read is recorded as a failure and retried, never counted as an answer that left you out.
