How InstAlert works, start to finish.
Open one of the supported sites and set the filters the way you normally search: model, price range, location, year. What matters is that you end up on a results page, not on a single listing.
Copy the URL out of your browser's address bar and tap “Add filter” in the app. We read the filters out of the link ourselves — there is nothing to fill in by hand.
If the search is far too broad (thousands of results) we refuse it and say so: a filter like that would send you dozens of alerts a minute. Add a price or location filter and try again.
As soon as you add a filter we record the listings that already exist — and send you none of them. That is the baseline: without it, a new filter would fire hundreds of alerts in its first minute. While this is happening the filter reads “nothing yet”. Alerts start from the next check onwards.
We never alert you twice about the same listing.
By default we check every 10 minutes; you can change that in Application Settings. Checking more often means faster alerts, but we cannot hammer the source sites indefinitely — which is why there is a floor.
See the frequently asked questions or write to us at giogajishvili@gmail.com.