Prisms vs JJ Sensei
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Prisms
Engage in a 3D spatial puzzle adventure as a scientist's intern. Roll, attach shapes, and orient your cube to solve challenges involving gates, teleporters, and invisible floors. Explore numerous experiments, with optional content available for purchase.
- 3D spatial puzzle gameplay
- Cube manipulation with shape attachment
- Teleporter and invisible flooring mechanics
- 20 free experiments
- Optional 20 bonus experiments
- Mastering 3 shapes: circle, square, triangle
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/// ABOUT PRISMS /// Prisms is a free 3D spatial puzzle game. You play the role of a newly hired intern of Dr. Cubit’s. Dr. Cubit is an underfunded, genius, zany scientist on the leading edge of cube-based research. As his intern, you can earn his satisfaction by assisting with scientific research in the form of rolling around cubes, attaching different shapes to your cube, then orienting your cube correctly to match up with shaped gates. During your internship, you will encounter 3 different shapes. The circle and square can be placed in any direction, while the triangle must be oriented correctly. You may also encounter teleporters and flooring that’s only temporarily visible, requiring additional spatial reasoning. There are 20 exciting experiments available for free and 5 crazy bonus experiments available by performing tests to Dr. Cubit’s standards. If you choose to fund Dr. Cubit’s research for $4.99, you can run 20 more challenging experiments and 5 more bonus experiments (not for the weak-minded)! /// PRISMS FACTS /// - Learn about Dr. Cubit and his friendly robot PRISMO over 20 challenging spatial puzzle levels. - Unlock the hidden challenges of 5 bonus levels by solving the puzzles more optimally. - Master the prism and learn to manipulate all 3 shapes. - No ads, no timers, no recurring microtransactions, no selling your data. This isn't some sort of dystopian spyware, this is REAL SCIENCE! - Optional $4.99 purchase to unlock 20 more levels with several new mechanics and 5 additional bonus levels for a total of 50 levels. - Visualize and complete successful experiments with invisible flooring. - Unleash the potential of the cube, teleporting to new areas. /// MORE LINKS /// LEARN MORE: https://prisms.app PRESS: https://press.prisms.app COMPANY WEBSITE: https://productionsofdust.com DISCORD: https://discord.gg/37hwP3J TWITTER: https://twitter.com/dustygames FACEBOOK: https://www.facebook.com/DustProductionsLLC/ REDDIT: https://www.reddit.com/user/dustyhunsaker/
JJ Sensei
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JJ Sensei turns learning Japanese kana into a fast, satisfying puzzle game. Blocks fall Tetris-style — match each one to the right hiragana or katakana before it lands. The more you play, the more the kana stick, through active recall instead of boring flashcards. FEATURES • Learn all hiragana and katakana as you play • Six modes: Hiragana, Katakana, All Kana, Grid Rush, Verb Lab, and Master • Combo scoring that rewards speed and accuracy • Game Center leaderboards and achievements • Clean, distraction-free design — offline-friendly, no ads, no tracking HOW TO PLAY 1. A kana block appears with a reading prompt 2. Match it to the correct character before it lands 3. Keep your streak alive to build high-scoring combos Free to play. Optional Premium unlocks unlimited lives and every level — available monthly, yearly, or as a one-time lifetime purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.xco-ai.com/jjsensei
Screenshots
Verdict
The clearest difference is update cadence: JJ Sensei at every 4 days against Prisms's every 17 months. Prisms's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.6). On price, ads and in-app purchases 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. Prisms sells 1 one-off in-app purchase and JJ Sensei sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Prisms ships an update every 17 months, JJ Sensei every 4 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Prisms | JJ Sensei |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (19 ratings) — better | — |
| Positive reviews | 88.9% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 17 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 158 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Dust Productions, LLC | Chun Hei Mak |
In-app purchases
Prisms
- Fund Dr. Cubit's Research$4.99
JJ Sensei
- Premium Monthly$1.991 Month
- Premium Yearly$9.991 Year
- Premium Lifetime$19.99








