MotionGen vs EnginPrep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MotionGen
This app synthesizes and simulates planar four-bar linkages, solving motion generation problems for multiple positions. It allows users to design and simulate single degree of freedom linkages for robots and machines, incorporating various pivot and line constraints.
- Synthesizes planar four-bar linkages
- Simulates linkage motion
- Solves N-position motion generation problems
- Incorporates pivot and line constraints
- Designs single degree of freedom linkages
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MotionGen synthesizes and simulates planar four-bar linkages. - It solves the motion generation problem for N-position problems. - Incorporates fixed- and moving-pivot and line constraints for 3 and 4 position problems. - Use MotionGen to design and simulate single degree of freedom linkages for your robot or machine.
EnginPrep
Prepare for the FE Civil and Mechanical exams with daily practice problems and comprehensive review lessons. Track your progress, identify weak spots, and take timed mock exams. Sync your learning across devices with a single account.
- Daily FE practice problems
- Worked solutions for all problems
- Topic-specific content review
- Timed mock exams
- Weak spot identification drills
- Progress tracking and syncing
- Cross-device compatibility
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Pass the FE exam with EnginPrep, the FE prep platform built by an engineer who’s been through it. Practice on your phone, review on your laptop, and keep every bit of progress with one account on enginprep.com and this app. Start free, no sign-up required: three new FE problems every day with complete worked solutions, for both Civil and Mechanical. FREE DAILY PROBLEM SET A fresh set of three exam-style problems each day, the same set on the website and in the app. Work them, check your answer, and read the full solution. FULL ACCESS INCLUDES Quick Practice Choose your topics and work through hundreds of problems written to the NCEES exam specification. Every problem has a step-by-step solution, and figures zoom so you can read every dimension. Content Review A lesson for every topic on the Civil and Mechanical FE specs, with practice problems you can regenerate for new numbers until the method sticks. Exam Mode Timed mock exams that mirror the real FE: topic weighting from the NCEES spec, a full-length 110-question exam or a shorter session, breaks, and no feedback until you finish. Then a score breakdown by topic so you know exactly where you stand. Weak Spot Drills The app tracks your accuracy by topic and builds a drill from your lowest-scoring areas. Spend your study time where it counts. Progress Tracking See accuracy by topic, sessions over time, and your daily streak — synced with the website so you can study anywhere. ONE ACCOUNT, EVERYWHERE Your EnginPrep subscription covers enginprep.com and this app. Start a session on your phone during a commute and finish the review on your laptop that night. Built for the FE Civil and FE Mechanical exams. Works on iPhone and iPad, light and dark mode. Questions? Email team@enginpeers.com.
Screenshots
Verdict
The clearest difference is rating: EnginPrep at 4.4 against MotionGen's 3.3. EnginPrep also leads on ratings volume (192 vs 16) and review sentiment (62% vs 50%). MotionGen's advantage is in-app purchases (none vs 1) and iOS requirement (7.0 vs 16.4). On price, ads and device support 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. EnginPrep sells 1 one-off in-app purchase. MotionGen asks for nothing beyond the download.
EnginPrep holds the better App Store score, 4.4 against 3.3. That said, the two scores are not equally well evidenced: EnginPrep has 192 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 50% of MotionGen's written reviews are positive against 62% of EnginPrep's.
| Parameter | MotionGen | EnginPrep |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (16 ratings) | 4.4 (192 ratings) — better |
| Positive reviews | 50.0% of reviews | 61.5% of reviews — better |
| Number of ratings | 16 | 192 — better |
| Update frequency | — | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 7.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 9 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Mechanismic Inc. | EnginPeers LLC |
Customer experience
MotionGen
EnginPrep
In-app purchases
MotionGen
No in-app purchases
EnginPrep
- Premium Content$4.99








