Brain Waves vs R
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Brain Waves
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You hand an ordinary deck of playing cards to a spectator for examination. They may shuffle the cards if they wish. You then slowly go through the face-down cards and ask the spectator to say βStopβ five times, selecting five random cards. (This is a completely free selection.) You hand the iPhone to the spectator and ask them to open the Brain Waves app. You reveal four of the cards one by one, and the spectator enters them into the app by selecting the suit and rank using the picker. Once the cards have been entered, you tell the spectator that you need to concentrate so the iPhone can pick up your brain waves. Next, you ask the spectator to shake the iPhone. After a shake, the back of a single playing card appears in the app. You ask the spectator to tap the card, and it flips over. You then reveal that this card is the same as the fifth card the spectator selected! The app includes a detailed explanation of how the effect works and how it can be performed. Optimized for system-wide light and dark mode (see screenshots).
R
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A revolutionary concept of real-time PK touch. PK touches, instant accomplice... Let yourself be carried away by this new concept with infinite possibilities. R-Touch is a groundbreaking application that offers an unmatched user experience in controlling the vibrations of your phone, a borrowed phone, and much more.
Screenshots
Verdict
The clearest difference is price: R at Free against Brain Waves's $17.99. R also leads on update cadence (every 2 months vs every 27 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
R is free to download; Brain Waves costs $17.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Brain Waves ships an update every 27 months, R every 2 months. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.
| Parameter | Brain Waves | R |
|---|---|---|
| Price | $17.99 | Free β better |
| Update frequency | Every 27 months | Every 2 months β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 10 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Breitling | Benjamin Vianney |
In-app purchases
Brain Waves
No in-app purchases
R
No in-app purchases








