Orthographic Projection vs Logic
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
Read full descriptionHide full description
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 !
Logic
Design, simulate, and simplify logic gate networks. Generate truth tables, minimized boolean expressions, and waveforms. This app is ideal for students and engineers to explore digital logic.
- Design logic gate networks
- Simulate network behavior
- Generate truth tables
- Minimize boolean expressions
- Create input-output waveforms
- Study boolean algebra theorems
Read full descriptionHide full description
The LogicGateDesign is a feature rich app designed by an engineer. This app allows the creative smart people like you to design, draw, analyse and simplify logic gate networks. You can draw logic gate networks and share it with others. You can generate truth table and find simplified/minimized boolean expression that represents the network. You can optimize and reverse engineer a boolean expression to draw a ladder logic diagram. It performs both forward engineering (boolean expression to logic circuit) and reverse engineering (logic circuit to boolean expression). There can be multiple groups of network and each group can have multiple outputs. Truth table is generated for all the outputs. You can simplify a boolean expression, and find the truth table and share it. Show truth table along with different types of boolean expression (simplified, Sum-of-products, Product-of-sums) The simplified expressions also gives you the number of gates required. You also get the alternate expressions for the same output with the gates required for that. You can generate a truth table, simplified boolean expression using input-output waveforms. You can generate a output waveforms, simplified boolean expression using truth table and input waveforms. You can generate a grey codes and grey code encoder wheel and share it. Do you have a truth table for your network and want to find the simplified/minimized boolean expression? This app has you covered. You can simulate your network by changing one input at a time or toggeling all inputs at once. This app generates beautiful diagrams (logic gate diagram or waveform diagram) that you can share with others or save it locally. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. There is also a page to help you study. This study tab teaches you some very important boolean algebra theorems. This is a perfect app for a creative smart individual like you. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!
Screenshots
Verdict
The clearest difference is rating: Orthographic Projection at 4.3 against Logic's 3.6. Orthographic Projection also leads on ads (none vs shown) and monetization model (free vs ad-supported). Logic's advantage is update cadence (every 5 weeks vs every 57 months) and review sentiment (21% vs 0%). On price, ratings volume, in-app purchases 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.
Orthographic Projection holds the better App Store score, 4.3 against 3.6. Both are backed by a comparable volume of ratings — 6 and 7 respectively. Written reviews complicate that: 0% of Orthographic Projection's written reviews are positive against 21% of Logic's, so the app with the better star average is not the one people write more warmly about.
Orthographic Projection ships an update every 57 months, Logic every 5 weeks. Both last shipped on October 24, 2026.
| Parameter | Orthographic Projection | Logic |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (6 ratings) — better | 3.6 (7 ratings) |
| Positive reviews | 0.0% of reviews | 21.4% of reviews — better |
| Number of ratings | 6 | 7 — better |
| Update frequency | Every 57 months | Every 5 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod, Mac, Apple TV — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 384 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Hajdu | Om Prakash Chapagain |
Customer experience
Orthographic Projection
Logic
In-app purchases
Orthographic Projection
No in-app purchases
Logic
No in-app purchases
Questions
Is Orthographic Projection free?
Is Logic free?
Which has better reviews, Orthographic Projection or Logic?
Do Orthographic Projection or Logic have ads?
Which is updated more often, Orthographic Projection or Logic?
Other comparisons















