Performance Vision Trainer vs Emoji Difference
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Performance Vision Trainer
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Performance Vision was born out a need to take traditional vision training to the digital age. The app is designed by a clinician scientist using both clinical and scientific protocols to train the physical, visual and neurocognitive elements involved in visual processing. Vision comprises of over 80% of your sensory input so it makes sense to train your most dominant sense. The Performance Vision app comprises of 9 activities and only takes 10 minutes a day. A licence is required to access the app and is available as a 3 month, 6 month or 12 month subscription.
Emoji Difference
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Sharpen your focus and put your observation skills to the test with Emoji Difference, a highly engaging spot-the-difference game designed for players of all ages. This addictive puzzle challenges you to identify the one unique emoji hidden within a grid of lookalikes—before the timer runs out!
Screenshots
Verdict
The clearest difference is ads: Performance Vision Trainer at none against Emoji Difference's shown. Performance Vision Trainer also leads on update cadence (every 3 weeks vs every 2 months). Emoji Difference's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Performance Vision Trainer ships an update every 3 weeks, Emoji Difference every 2 months. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.
| Parameter | Performance Vision Trainer | Emoji Difference |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 137 MB | 67 MB |
| Age rating | 9+ | 4+ |
| Developer | performance vision Limited | 现 王 |
In-app purchases
Performance Vision Trainer
No in-app purchases
Emoji Difference
No in-app purchases
