# Koydo CDL Prep — Practice Tests & Study Guide > Practice Tests & Study Guide (iPhone/iPad app by Robert Waltos.) - Source: https://appshunter.io/ios/app/koydo-cdl-prep/id6763954374 (this page in markdown: same URL + `.md`) - Developer: [Robert Waltos](https://appshunter.io/developer/1886570775) - Category: Education, Productivity - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 16.0 · 169 MB - Languages: American English - Released: 2026-05-12 - Data updated: 2026-08-10 - User reviews in markdown: https://appshunter.io/ios/app/koydo-cdl-prep/id6763954374/reviews.md ## What is Koydo CDL Prep? Practice for the CDL knowledge exam with one focused app for the sections that matter on test day. Koydo CDL Prep helps future commercial drivers study the FMCSA and state DMV knowledge areas with state onboarding, section practice, mock exams, starred review, recently-wrong review, Progress Points, reminders, and parked-study voice prompts. WHAT'S INSIDE • 1,250 sourced state-rules prompts across all 50 states • 1,577 total English CDL practice rows across core sections, pre-trip, and state rules • Section-by-section practice for General Knowledge, Air Brakes, Combination Vehicles, Hazmat, Doubles/Triples, Tanker, Passenger, School Bus, and Pre-Trip Inspection • 8-question placement to recommend the best starting section • Full mock exam with 80% pass threshold and readiness certificate • Starred and recently-wrong review modes • Progress Points, streaks, levels, and standalone opt-in CDL leaderboard • Parked-study mode with optional speech input, for parked breaks only • Clean CDL-specific account, subscription, and legal flow in the app IMPORTANT Koydo is an independent adult study app. It is not affiliated with FMCSA, any DMV, or any state licensing authority. Always confirm requirements against your official state CDL manual. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://koydo.app/privacy Support: https://koydo.app/support ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Koydo CDL Annual | $34.99 | per year | | Koydo CDL Monthly | $14.99 | per month | | Koydo CDL 6-Month | $24.99 | per 6 months | ## Version history (last 5 releases) ### 1.0.11 — 2026-08-09 Improves sign-in reliability and security, with additional release safeguards. ### 1.0.10 — 2026-07-20 Reliability improvements for subscriptions and purchases, plus performance and stability fixes for a smoother study experience. Good luck on your CDL exam! ### 1.0.9 — 2026-07-12 This update makes studying faster and cleaner across the app: - Redesigned CDL Premium page so plans and pricing are easier to compare - Cleaner, edge-to-edge layouts on every screen for more content per glance - Simpler state selection when you set up your exam - Streamlined 8-question placement quiz - Tidier ELDT Theory Study Companion with curriculum paths front and center ### 1.0.8 — 2026-07-07 A refreshed look throughout the app: cleaner, less cluttered screens that use more of your screen, one-tap sign-in with Google/Apple, and new bespoke artwork for the ELDT Theory Study Companion. Bug fixes and polish throughout. ### 1.0.7 — 2026-06-05 • New Flashcards tab — quick-recall decks (Essentials, Handbook, State Tips, Study Guide) • Dark mode (Settings ▸ Appearance) • Faster, smoother navigation and reliability fixes • Added State-specific rules study content • Refined study & practice layouts ## More apps by Robert Waltos - [Koydo Matura 2026](https://appshunter.io/ios/app/koydo-matura-2026/id6761746389) - [Renata Cleans Dallas](https://appshunter.io/ios/app/renata-cleans-dallas/id6773935133) All apps by Robert Waltos: https://appshunter.io/developer/1886570775 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-10.*