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Difficulty moves with each answer, so study time concentrates on the sections that are actually costing points instead of walking the whole syllabus again.

Deep enough that a student drilling a weak area keeps meeting fresh items rather than memorising a fixed bank by sight.

Not a pre-recorded explanation of a different question. Koydo's tutor works through the item in front of your teenager and takes the follow-up — included on every paid plan.

Self-paced throughout. A week lost to illness or a school trip costs you nothing and needs no rescheduling.

AP preparation, the full K-12 curriculum, 50+ study languages and educational games — test prep is not a separate product here.

A younger sibling working through algebra and an older one sitting the SAT share one subscription and one parent view.



Koydo does not offer a pass, score, improvement, or learning-outcome guarantee for any app, subscription, or institutional program. Refund eligibility is governed only by Koydo's published refund policy and is never conditional on an academic result.
A book cannot notice that your teenager keeps missing the same inference question type. Koydo re-pitches the next item from the last answer and puts a tutor behind the ones that go wrong.
Yes — the SAT preparation follows the current digital format, including adaptive section behaviour. The SAT prep page shows what is covered today.
No. SAT, PSAT and AP preparation are part of the subscription; the pricing page shows the current tiers and what each one includes.
