ExplosionMotor vs Coloring Your ZOO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ExplosionMotor
Learn the principles of internal combustion engines with this tutorial application. It provides an English-language guide to understanding how these motors function.
- Internal combustion engine principles
- Tutorial application
- English language
- Educational content
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Discover what happens inside a 4-stroke engine. 4-Stroke Engine is an educational app designed to make the basic principles of internal combustion engines easy to understand. Learn the four stages of the engine cycle: • Intake • Compression • Power • Exhaust The theory section explains the key concepts step by step, helping you understand how the piston, valves, combustion process, and other engine components work together. Educational videos complement the theory and provide a visual way to understand the different stages of the 4-stroke cycle. Whether you are a student, an automotive apprentice, a teacher, or simply curious about how engines work, the app provides an accessible introduction to the fundamentals of 4-stroke engines. Learn at your own pace, connect theory with visual explanations, and discover how combustion is transformed into mechanical motion. • Engine Simulator Drag the RPM slider and watch the piston, connecting rod and crankshaft move in real time. Hear the engine note rise and fall, and follow live RPM, stroke and temperature gauges. • Parts Explorer — Tap any part of the engine to discover what it does: spark plug, piston, connecting rod, crankshaft and more. • Quiz — Test your knowledge of the Intake, Compression, Power and Exhaust strokes and beat your best score.
Coloring Your ZOO
This app offers a fun drawing and coloring experience for all ages. It features a variety of high-quality pictures to color, a blank page for freehand drawing, and a realistic painting simulation. It's a great way to express creativity and relieve stress digitally.
- Funny drawings to color
- Blank paper for drawing
- Video replay of coloring process
- Easy zoom functionality
- Realistic painting experience
- Hours of fun
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ZOO is a funny drawing and coloring app for all ages! You can enjoy high quality pictures to color and a blank paper page in which you can draw whatever you like! ••• FEATURES • Funny drawings! • Video replay • Easy zoom • A lot of pictures • Hours of fun ••• COLORS ARE WAITING! This app will give you a realistic painting experience. The pictures are not too easy nor too difficult. Enjoy! ••• START DRAWING NOW - WITH ZOO! Coloring and drawing is a great way to express your emotions, relieve stress and sharpen creativity. Thanks to the wonderful world of technology nowadays, you can turn your device into a great coloring book without making a mess at home or wasting papers. Try it out! Download this app now and see how much you will love it! ••• FREE APP This is the free version of Coloring Your ZOO MAX. Some pictures are locked. You can easily unlock all of the features via an in-app purchase. If you would prefer an app without in-app purchases, please consider downloading the paid version: Coloring Your ZOO MAX.
Screenshots
Verdict
The clearest difference is price: Coloring Your ZOO at Free against ExplosionMotor's $0.99. Coloring Your ZOO also leads on rating (4.5 vs 4.0) and update cadence (every 2 months vs every 39 months). ExplosionMotor's advantage is in-app purchases (none vs 3). On review sentiment, 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
Coloring Your ZOO is free to download; ExplosionMotor costs $0.99 up front. Coloring Your ZOO sells 3 one-off in-app purchases. ExplosionMotor asks for nothing beyond the download.
Coloring Your ZOO holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Coloring Your ZOO has 36 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of ExplosionMotor's written reviews are positive against 98% of Coloring Your ZOO's, so the app with the better star average is not the one people write more warmly about.
ExplosionMotor ships an update every 39 months, Coloring Your ZOO every 2 months. The most recent releases landed on October 28, 2026 and October 21, 2026 respectively.
| Parameter | ExplosionMotor | Coloring Your ZOO |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) | 4.5 (36 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 97.7% of reviews |
| Number of ratings | 1 | 36 — better |
| Update frequency | Every 39 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple TV — better |
| Requires iOS | 15.6 | 6.0 — better |
| Further details — not scored | ||
| Size | 94 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | NMS Narcisse Mavoha Solutions Sarl | Stas Gurevich |
Customer experience
ExplosionMotor
Coloring Your ZOO
In-app purchases
ExplosionMotor
No in-app purchases
Coloring Your ZOO
- 5 Keys$0.99
- 25 Keys$1.99
- MEGA PACK$2.99
Questions
Is ExplosionMotor free?
Is Coloring Your ZOO free?
Which has better reviews, ExplosionMotor or Coloring Your ZOO?
Do ExplosionMotor or Coloring Your ZOO have ads?
Which is updated more often, ExplosionMotor or Coloring Your ZOO?
Other comparisons
