Save My Exams sells one thing and sells it well: revision written to a specification by people who have marked that specification. Notes, topic questions, past papers, flashcards and mock exams across GCSE, IGCSE, A-Level, IB and AP, spanning AQA, Edexcel, OCR, WJEC, Cambridge, Oxford AQA and CCEA — more than 150,000 resources, used by roughly 2.5 million students a month. A free account gets you through the door with limited access to the notes, and a subscription opens the rest, billed monthly, quarterly or annually.
The limitation is structural rather than a fault. Everything on the site was written before you arrived, for the average candidate on your specification. It cannot see the handout your teacher wrote, the thirty pages you filled in class, the textbook edition your school actually bought, or the recording of the lesson where the thing finally made sense. And if your course is not one they publish for — a BTEC unit, a coursework project, a university module, a professional qualification — there is nothing there for you at all, and there is not going to be.
There is also nothing adaptive about it. You read the note, you attempt the questions, and you decide for yourself what deserves another look. No schedule pulls your weak topics forward, there is no audio version for the days you cannot face reading, and there is no official app — the phone app carrying the name in the App Store is published by an unrelated third-party developer, which is worth knowing before you install it.
Scholarly does the other half of the job. Point it at what you hold — lesson notes, slides, a chapter photographed on your phone, a recording — and it returns cards on a review schedule, a quiz, a condensed guide, a mind map, an audio overview or a narrated lecture, each one traceable to the page it came from. It cannot tell you how a board marks a six-marker; only an examiner can. So the honest recommendation is not to swap one for the other. Read their notes to learn what the board wants, build your revision out of your own class material, and test yourself against their questions.