Hand Washing Trainer vs HERO2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hand Washing Trainer
This interactive game teaches children proper handwashing techniques using the World Health Organization's guidelines. It features realistic 3D hand anatomy simulations and provides visual feedback to ensure all areas are cleaned, promoting healthier habits and reducing infections.
- WHO handwashing steps
- Realistic 3D hand anatomy
- UV inspection feedback
- 27 song options
- Interactive game mechanics
- Healthier habit promotion
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The Hand Washing Trainer is an innovative interactive app that was created to help children learn the art and science of proper handwashing. It uses touchscreen game mechanics to teach players the World Health Organization’s (W.H.O.) handwashing steps for hand hygiene. Its ultimate goal: healthier habits, decreased infections and keeping everyone healthier. Choose from 27 different songs, learn the W.H.O. handwashing steps, and get scrubbing! The app incorporates high fidelity simulation of handwashing technique with accurate depictions of hand anatomy which have been traditionally very hard to portray. Exercising this skill on an accurate 3D model in the game allows for players’ behavior to translate into real-life practice. If you are reading this description, you probably already care about better hand hygiene. The Hand Washing Trainer does three things exceedingly well: (1) it provides realistic training in the W.H.O. handwashing steps; (2) it provides critical visual feedback on what areas of the hands were missed by virtual ultraviolet inspection; (3) it results in real-world improvement of handwashing at the sink. Developed with funding from the National Institutes of Health, the Hand Washing Trainer is the result of over 3 years of iterative design, with over 400 builds and over 5,000 games played. Over 2,000 students and their teachers have played the game. Learn proper handwashing skills to stay healthy: because you won't wash what you don't see. By playing the Hand Washing Trainer, players learn how to properly wash their hands like professionals do. This knowledge translates into better handwashing skills at the sink. Ultimate goal: healthier habits, decreased infections and keeping everyone healthier. Handwashing is cheap and effective protection against a host of infectious diseases, including RSV, common cold, influenza, COVID-19, polio, norovirus and other gastrointestinal and respiratory diseases, but only if done effectively, at the appropriate time, and consistently. This skill is especially important for school-age children, and those who tend to come into contact with more people, and/or are more prone to acquiring infections. Proper hand washing decreases the rate of infection both for individuals as well as the community.
HERO2
This app encourages sustainable travel by rewarding users for walking, biking, or taking public transit. Earn points to unlock local deals, track your progress, and compete with friends. Build a travel profile and see your positive impact.
- Earn rewards for walking, biking, and transit
- Unlock local deals and perks
- Track miles, savings, and CO2 avoided
- Build a travel profile
- Compete on leaderboards with friends
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Turn walks, bike rides, and transit trips into Power, redeemable for perks at local spots near you. From quick errands to longer trips across town, HERO2 turns everyday travel into savings, streaks, and measurable impact. 1. Move. Walk, bike, or ride transit. 2. Earn. Collect Power for eligible trips. Unlock deals and perks from local merchants. 3. Share. Compare your travel breakdown – miles, savings, trip types, and CO₂ avoided. Climb leaderboards with friends and your community. Runs on background location to detect trips automatically. No logging, no check-ins. Move sustainably. Earn Rewards. Move different.
Screenshots
Verdict
The clearest difference is in-app purchases: HERO2 at none against Hand Washing Trainer's 1. HERO2 also leads on update cadence (fortnightly vs every 6 months). Hand Washing Trainer's advantage is ratings volume (18 vs 2) and iOS requirement (12.0 vs 15.0). On price, rating, ads and monetization model 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. Hand Washing Trainer sells 1 one-off in-app purchase. HERO2 asks for nothing beyond the download.
HERO2 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Hand Washing Trainer has 18 ratings behind it against 2, so its average is the more settled of the two.
Hand Washing Trainer ships an update every 6 months, HERO2 fortnightly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Hand Washing Trainer | HERO2 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (18 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 18 — better | 2 |
| Update frequency | Every 6 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 436 MB | 33 MB |
| Age rating | 4+ | 12+ |
| Developer | Indelible Learning, Inc. | Genius at Large, Inc |
Customer experience
Hand Washing Trainer
HERO2
In-app purchases
Hand Washing Trainer
- Trainer Pro$7.99
HERO2
No in-app purchases









