There is an explanation of the SRS periods in this other thread:
Does anyone have any insight into the Memrise SRS algorithms for reviewed words?
I was looking for a basic idea of how often (and how long) reviewed words will get showsn for review.
(e.g. 4 hrs, 1 day, 2 day, 7 days, 21 days etc…)
As I’m planning on doing a longish course that will require 6-9 months, I wanted to make sure that the Memrise algorithm would last the duration. (I had seen some mention about it only stretching over 180 days but I didn’t understand what the impact would be.)
But be aware that there was a recent announcement to say they are trialling some possible changes in the ‘official’ Memrise courses:
This is a heads up to let you know that in the coming days and weeks, we will be running some experiments relating to how we schedule reviews on Memrise official courses. This does not affect Decks.
During the experiment, some of you might experience changes in the timings between reviews on words that you have learnt. We are testing new ways of scheduling reviews in order to help you learn as effectively and efficiently as possible.
Please let me know if you have any questions.
When you have words/items due for review, you will see a watering can icon with a number next to it against the relevant course on your dashboard. Hope this helps.