Orthographic Projection vs MistakeBook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Orthographic Projection
Master orthographic projection with this interactive educational app. Ideal for technical students and engineers, it offers engaging ways to learn and test your skills in 1st and 3rd angle projections through fun, gamified modes. Build your knowledge and earn stars as you progress.
- Interactive orthographic projection learning
- 1st and 3rd Angle Projection modes
- Easy and Hard difficulty modes
- Spatial orientation improvement
- Symbolic drawing creation
- 32+ parts for practice
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Very useful application for technical school students and engineers. Learn or test your skills in the orthographic (orthogonal) projection through interactive way on your smartphone or tablet. This application will show you that learning can be very fun! Your knowledge will be appreciated in this application with the stars (yellow for easy mode, red for hard mode). Application features: --- No advertisements and no in-app purchases --- Application improves spatial orientation --- 1st Angle Projection --- 3rd Angle Projection --- Easy mode (rotate, mirror) --- Hard mode (rotate, mirror and mix) --- 32 parts (more soon) --- Interactive 3D model of the part --- Symbolic drawing creation of each part at the end Many successes !
MistakeBook
Log and review incorrect answers to improve learning. Organize mistakes by subject and topic, and utilize spaced repetition to reinforce weak areas. Track progress with visual charts and daily check-ins for effective test preparation.
- Log mistakes with photos and notes
- Organize by subject and custom tags
- Spaced repetition review mode
- Ebbinghaus forgetting curve schedule
- Progress charts and stats dashboard
- Data import/export backup
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Capture every wrong answer in seconds. Sort mistakes by subject, tag key topics, and build a personal error bank—no account required. Preparing for midterms, finals, or standardized tests? Spaced review quizzes follow the forgetting curve so weak spots come back at the right time. See progress charts and daily check-ins to stay on track. • Log mistakes with photos, notes, and difficulty tags • Organize by subject, chapter, and custom tags • Review mode: quiz, practice, and spaced repetition • Ebbinghaus schedule for smarter recall • Stats dashboard: mastery trends and weak areas • Import/export backup—data stays on your device Built for students who want a simple, private way to turn errors into higher scores.
Screenshots
Verdict
The clearest difference is review sentiment: MistakeBook at 100% against Orthographic Projection's 0%. MistakeBook also leads on update cadence (monthly vs every 57 months) and iOS requirement (13.0 vs 15.0). Orthographic Projection's advantage is price (Free vs $1.99) and device support (5 vs 3). On ads and in-app purchases 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
Orthographic Projection is free to download; MistakeBook costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Orthographic Projection ships an update every 57 months, MistakeBook monthly. The most recent releases landed on June 1, 2026 and September 13, 2026 respectively.
| Parameter | Orthographic Projection | MistakeBook |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.2 (5 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | — |
| Update frequency | Every 57 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod, Mac, Apple TV — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 384 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Hajdu | Xiamen City Fanyou Network Technology Co., Ltd. |
Customer experience
Orthographic Projection
MistakeBook
In-app purchases
Orthographic Projection
No in-app purchases
MistakeBook
No in-app purchases
Questions
Is Orthographic Projection free?
Is MistakeBook free?
Do Orthographic Projection or MistakeBook have ads?
Which is updated more often, Orthographic Projection or MistakeBook?
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