CDL Prep vs Safety at CSD Innovations
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CDL Prep
Prepare for your Commercial Drivers License exams with a comprehensive question bank covering general knowledge and various endorsements. Features practice and exam modes with instant feedback and answer randomization.
- Over 500 practice questions
- Exam Mode with timed tests
- Practice Mode with instant feedback
- Answer randomization
- Covers General Knowledge and endorsements
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CDL Prep is the best way to prepare for the Commercial Drivers License General Knowledge, and various endorsement exams. CDL Prep contains questions on the following topics: General Commercial, Air Brakes, Combinations, Hazmat, Passenger, Tanks, School Bus, and Doubles/Triples. Features: 1. Over 500 questions to practice with. 2. Exam Mode - 60 minutes to answer 50 randomly chosen questions, or 40 minutes to answer 20 to 30 questions on endorsement topics. At the end, review your score and any incorrect answers. 3. Practice Mode - Answer questions and receive instant feedback if you answered incorrectly. 4. Answer Randomization - Answers to questions will not always be in the same position. Please send any feedback or request to: CDLPrepApp@gmail.com. Thank you for reading, and good luck on your exams!
Safety at CSD Innovations
This app streamlines behavior-based safety coaching and evaluations. It guides trainers through a thorough process, expedites documentation, and allows focus on coaching quality.
- Behavior-based safety coaching
- Evaluation guidance
- Expedited documentation
- Improved coaching quality
- Trainer focus
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Technology to improve the quality of behavior based safety coaching and evaluations, guide the trainer or evaluator through a specific and thorough process, expedites the detailed documentation, while allowing the trainer or evaluator to focus on the quality of the evaluation and coaching.
Screenshots
Verdict
The clearest difference is ads: Safety at CSD Innovations at none against CDL Prep's shown. Safety at CSD Innovations also leads on update cadence (every 2 weeks vs every 2 months) and rating (5.0 vs 4.7). CDL Prep's advantage is ratings volume (7.1K vs 4) and chart position (#88 vs unranked). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Safety at CSD Innovations holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: CDL Prep has 7.1K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 81% of CDL Prep's written reviews are positive against 100% of Safety at CSD Innovations's.
CDL Prep ships an update every 2 months, Safety at CSD Innovations every 2 weeks. The most recent releases landed on November 12, 2026 and November 3, 2026 respectively.
| Parameter | CDL Prep | Safety at CSD Innovations |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (7.1K ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 80.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 7.1K — better | 4 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Best chart rank | #88 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 7 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeffrey Diaz | Certified Safe Driver |
Customer experience
CDL Prep
Safety at CSD Innovations
Bugs and requests
CDL Prep
Reported bugs
2 issues- Back button issues
- Incorrect answers in app
Requested features
3 requests- Ad-free version
- Ability to report incorrect questions
- Include state-specific requirements
Safety at CSD Innovations
Not enough reviews yet to summarise bugs or requests.
In-app purchases
CDL Prep
No in-app purchases
Safety at CSD Innovations
No in-app purchases
Questions
Is CDL Prep free?
Is Safety at CSD Innovations free?
Which has better reviews, CDL Prep or Safety at CSD Innovations?
Do CDL Prep or Safety at CSD Innovations have ads?
Which is updated more often, CDL Prep or Safety at CSD Innovations?
Other comparisons
