klang² vs Laser Microscopy Quiz
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
klang²
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20 sound squares turn your ears upside down. Which bird sings? Which composer sounds? Can you put proverbs together and recognize foreign languages? Place your smartphone with the klang² app open in the middle of the table, place a sound square on the reader and listen carefully: Off you go with your acoustic game collection! ATTENTION: This app only works together with 20 sound squares, which are available via klang2.com.
Laser Microscopy Quiz
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Laser Microscopy Quiz is a fun app, developed by employees, partners and friends of TOPTICA Photonics. You can win nothing but knowledge and the joy of the game. You do not need to buy anything. There are 3 levels per game: Level 1 can typically be answered by people with a general interest in Optics/Physics/Science and a sense of humor. Level 2 can typically be answered by people who paid attention during their physics classes at university. Level 3 can typically be answered by experts in the field of microscopy technologies. Currently there are 300+ questions in the library. If you want to suggest your own quantum-related question, please submit it via this web form or via „Submit a question“ in this app. Do not forget the three wrong answers, they are as important as the correct one. A reference in the comments section is welcome. The highscore table will be reset at the beginning of each quarter. This is also when we will add new questions to the library.
Screenshots
Verdict
The clearest difference is in-app purchases: Laser Microscopy Quiz at none against klang²'s 10. klang²'s advantage is update cadence (every 2 months vs every 5 months). On price, ads, device support and iOS requirement 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. klang² sells 10 one-off in-app purchases. Laser Microscopy Quiz asks for nothing beyond the download.
klang² ships an update every 2 months, Laser Microscopy Quiz every 5 months. The most recent releases landed on October 18, 2026 and September 19, 2026 respectively.
| Parameter | klang² | Laser Microscopy Quiz |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 14.2 — better |
| Further details — not scored | ||
| Size | 89 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | Oberlin & Rennertz GmbH | Toptica Photonics AG |
In-app purchases
klang²
- Klang2 Pro Option 0Free
- Klang2 Pro Option 1$0.99
- Bundesländer und Hauptstädte$0.99
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- Klang2 Pro Option 2$1.99
- Klang2 Pro Option 3$3.99
- Volkslieder Premium$3.99
- Tierisch Menschlich$3.99
- Klang2 Pro Option 4$7.99
- Klang2 Pro Option 5$11.99
- Klang2 Pro Option 6$16.99
Laser Microscopy Quiz
No in-app purchases
Questions
Is klang² free?
Is Laser Microscopy Quiz free?
Do klang² or Laser Microscopy Quiz have ads?
Which is updated more often, klang² or Laser Microscopy Quiz?
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