Nanda Sense
what fell reaction game
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Fully offline, zero data collection, zero ads.
Crop photos from your iPhone album into falling shapes - up to 10 saved, with Color or Mono silhouette toggle.
A high-speed reaction game where shapes flash from top to bottom - your job is to identify what just fell. Fall time from 0.35 to 1.5 seconds, 3 to 6 multiple-choice options. Color is misleading: identify by shape alone.
[Fully Offline, Zero Data Collection, Zero Ads]
Everything runs on-device. No network traffic, no data collection, no advertising, no third-party SDKs. The app works without an internet connection - safe to hand to kids without worry.
[The Signature Feature: Your Own Drops]
Crop any photo from your iPhone album into a personal falling shape. Pets, favorite characters, logos, household objects - anything can become a drop. Up to 10 photos can be stored, each toggleable between Color and Mono silhouette. Mono drops fall as a tinted shape just like the built-in 13 shapes, removing color and texture cues to sharply raise the difficulty.
[13 Built-in Shapes]
Circle, triangle, square, diamond, star, pentagon, cross, hexagon, octagon, heart, ring, semicircle, crescent. Each spawns with a random rotation and one of three colors - but color is never a clue.
[4 Difficulty Levels]
- Easy: 1.50s / 3 choices (intro)
- Normal: 0.80s / 3 choices
- Hard: 0.35s / 5 choices
- Custom: 0.15-2.00s fall time + 3-6 choices, fully adjustable
[Session-Based Play]
Set 1-10 rounds per session. The summary screen shows your correct count and accuracy. A 100% run triggers a "Perfect!" celebration. The last three sessions are saved as history.
[Polish]
- 120Hz ProMotion-ready for the smoothest fall rendering
- Two visual themes: Cyber (neon, dark) and Soft (pastel, cream)
- Portrait + Landscape (landscape shortens the fall path - harder)
- Bilingual How-To-Play guide with JP/EN toggle
For anyone who wants to sharpen reflexes, kill a few minutes with a quick game, or build a personal reaction game from their own iPhone album.
Requires iOS 16+. Works without an internet connection.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Refreshed the design with a neon arcade style to match the new app icon.
- Unified the look of the Home, quiz, results, and photo management screens.
- Improved the initial loading speed of photo management for smoother access to saved photos.
The developer, seiji honda, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- seiji honda
- Size
- 8.3 MB
- Category
- Casual
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Photo Drops Unlock $0.49
- Copyright
- © Seiji Honda
