# phyphox vs FizziQ Junior

The clearest difference is review sentiment: phyphox at 79% against FizziQ Junior's 50%. FizziQ Junior's advantage is update cadence (every 6 weeks vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

phyphox ships an update every 3 months, FizziQ Junior every 6 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | phyphox | FizziQ Junior |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (282 ratings)](https://appshunter.io/ios/app/phyphox/id1127319693/reviews)** | — |
| Number of ratings | **282** | — |
| Positive reviews | **78.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 19 MB | 84 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RWTH Aachen University](https://appshunter.io/developer/371466796) | [Christophe Chazot](https://appshunter.io/developer/1516870598) |

## What reviewers say

### phyphox

[App page](https://appshunter.io/ios/app/phyphox/id1127319693)

Unlock your phone's sensors for scientific exploration. Conduct pre-built experiments or create your own using accelerometers, magnetometers, and more. Analyze and export data in various formats for further study.

**Highlights:** Pre-defined experiments, Data export (CSV, TSV, Excel), Web-based remote control, Custom experiment editor, Access to phone sensors, Advanced analysis functions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Access to phone sensors
- 🔬 Useful for physics experiments
- 📊 Data logging and export
- 🆓 Free and no ads
- 🤔 Sparks curiosity

**What reviewers complain about**

- 🐛 Bugs and crashes
- 📉 Inconsistent performance
- 🔒 App locks/minimizes recording
- ❓ Units not always clear
- ⚠️ Potential for device damage

**Reported bugs**

- App crashes on older devices
- Barometer not working on iOS 17.4
- Network error: Generic error
- Sound measurement curve disappears
- App crashes frequently

**Requested features**

- Add infrasound detector
- More units of measurement (G-force, PSI, feet)
- NFC/RFID support
- In-app bug report feature
- Allow other sensors via USB-C


### FizziQ Junior

[App page](https://appshunter.io/ios/app/fizziq-junior/id1645549884)

This free digital science notebook helps upper primary and lower secondary students develop scientific reasoning through hands-on experimentation. It utilizes device sensors, camera, and touch functions for engaging classroom investigations.

**Highlights:** Digital science notebook, Hands-on experimentation, Utilizes device sensors, Classroom investigation tools, Develops scientific reasoning, Supports upper primary/lower secondary students

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is phyphox free?

phyphox is free to download, with no in-app purchases.

### Is FizziQ Junior free?

FizziQ Junior is free to download, with no in-app purchases.

### Do phyphox or FizziQ Junior have ads?

Neither phyphox nor FizziQ Junior shows ads.

### Which is updated more often, phyphox or FizziQ Junior?

phyphox ships an update every 3 months, and FizziQ Junior every 6 weeks. Most recently, phyphox was updated on November 2, 2026 and FizziQ Junior on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*