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Free study guides live today
Every exam between you and the next step.
Koydo organizes exam preparation around the goal it serves — seven groups covering admissions, licensure, and professional credentials, with free topic-by-topic study guides live today.
What is Koydo Exam Prep?
Koydo Exam Prep is the adult and admissions wing of the Koydo learning portfolio, built by KOYDO LLC. Instead of selling each exam as a separate product, Koydo groups exams by the goal they serve: getting into college, entering graduate school, earning a clinical license, a finance credential, a project or technology certification, a commercial driving or trade license, or finishing secondary school. One exam product is live today: CDL prep, at cdl.koydo.app. Every other exam product is coming soon, with the waitlist open. Alongside the products, free topic-by-topic study guides — reference reading with worked explanations, not apps — are available for the SAT, ACT, GRE, LSAT, MCAT, NCLEX-RN, CPA, PMP, CDL, IELTS, and TOEFL. Everything is ad-free and honest about what is live now versus on the way.
Seven groups, one goal each
Pick the goal in front of you. Each group collects every exam that serves it — what is live, what is coming, and how the preparation works.
- SAT · ACT · PSATCollege AdmissionsThe path to a college seat, organized.
- GRE · GMAT · LSAT · MCATGraduate SchoolGraduate school entry, one study path.
- NCLEX-RN · USMLENursing & MedicalClinical boards, prepared calmly.
- CPA · CFA · Series 7Accounting & FinanceProfessional finance credentials, one shelf.
- PMP · CompTIA · AWSProject & Tech CertificationsCertifications that move careers.
- CDL · Electrician · HVAC · PlumbingTrades & LicensingLicensed hands, steady work.
- Matura · Abitur · A-Levels · BaccalauréatSchool-Leaving ExamsExams that end school, worldwide.
Free study guides
Topic-by-topic reference guides with worked explanations — free reading material, not product launches.
The one live exam product today is CDL prep, at cdl.koydo.app
- CDLCommercial Driver's License
- NCLEX-RNNational Council Licensure Examination — Registered Nurse
- IELTSInternational English Language Testing System
- GREGraduate Record Examinations
- SATScholastic Assessment Test
- MCATMedical College Admission Test
- LSATLaw School Admission Test
- PMPProject Management Professional
- CPACertified Public Accountant
- TOEFLTest of English as a Foreign Language
- ACTAmerican College Testing
One membership, every exam group
Koydo exam prep is part of the Koydo portfolio. See what a membership covers across programs, apps, and prep.
Be ready before the exam date is
Join the waitlist and we will email you the moment full adaptive exam prep opens for your group.
Join the waitlist