ExplosionMotor vs Washington's Lottery
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
Read full descriptionHide full description
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.
Washington's Lottery
Scan lottery tickets to check for wins and earn rewards. Discover current jackpots, winning numbers, and past draw histories. Customize notifications for your favorite games and promotions.
- Ticket scanner for Scratch and Draw tickets
- Check jackpot amounts
- Earn rewards points for non-winning tickets
- View winning numbers and draw histories
- Information on current Scratch games
- Customize notifications
Read full descriptionHide full description
Imagine even bigger with the Washington’s Lottery official mobile app. A built-in ticket scanner lets you scan both Scratch and Draw tickets to see if you’ve won. And, with the My Lottery 360º rewards program, you’ll earn points for every eligible non-winning ticket you scan. Must be 18 or older to purchase Washington’s Lottery tickets and to join My Lottery 360º. Visit walottery.com for details. Features: • Check the current Jackpot amounts • Built-in ticket scanner lets you scan both Scratch and Draw tickets • Enter eligible non-winning Scratch and Draw tickets to earn My Lottery 360º rewards points • Earn additional rewards points by completing daily, weekly and monthly achievements • Check out current Scratch games and get information for each game • Check jackpots, winning numbers and draw histories for your favorite Washington’s Lottery Draw games • Customize push and email notifications for your favorite games and promotions
Screenshots
Verdict
The clearest difference is review sentiment: ExplosionMotor at 100% against Washington's Lottery's 14%. ExplosionMotor also leads on rating (4.0 vs 1.7). Washington's Lottery's advantage is price (Free vs $0.99) and update cadence (every 3 months vs every 39 months). On ads, 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
Washington's Lottery is free to download; ExplosionMotor costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ExplosionMotor holds the better App Store score, 4.0 against 1.7. That said, the two scores are not equally well evidenced: Washington's Lottery has 1.3K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of ExplosionMotor's written reviews are positive against 14% of Washington's Lottery's.
ExplosionMotor ships an update every 39 months, Washington's Lottery every 3 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | ExplosionMotor | Washington's Lottery |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | 1.7 (1.3K ratings) |
| Positive reviews | 100.0% of reviews — better | 13.8% of reviews |
| Number of ratings | 1 | 1.3K — better |
| Update frequency | Every 39 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 94 MB | 38 MB |
| Age rating | 4+ | 17+ |
| Developer | NMS Narcisse Mavoha Solutions Sarl | Marcus Thomas LLC |
Customer experience
ExplosionMotor
Washington's Lottery
Bugs and requests
ExplosionMotor
Not enough reviews yet to summarise bugs or requests.
Washington's Lottery
Reported bugs
5 issues- Reward points not adding up correctly
- Ticket scanner not working, camera turns white
- Constant login issues, can't create account
- Digital gift card purchase options not working
- App crashes, freezes, and glitches frequently
Requested features
2 requests- Bring back Target, Best Buy, and Google Pay gift cards
- Add Hobby Lobby gift cards to rewards
In-app purchases
ExplosionMotor
No in-app purchases
Washington's Lottery
No in-app purchases
Questions
Is ExplosionMotor free?
Is Washington's Lottery free?
Which has better reviews, ExplosionMotor or Washington's Lottery?
Do ExplosionMotor or Washington's Lottery have ads?
Which is updated more often, ExplosionMotor or Washington's Lottery?
Other comparisons
