# phyphox vs Discovery Tool Our Voice

The clearest difference is rating: phyphox at 4.6 against Discovery Tool Our Voice's 4.0. phyphox also leads on ratings volume (276 vs 3). On price, update cadence, ads and in-app purchases there is nothing between them.

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

phyphox holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: phyphox has 276 ratings behind it against 3, so its average is the more settled of the two.

phyphox ships an update every 3 months, Discovery Tool Our Voice every 2 months. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | phyphox | Discovery Tool Our Voice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (276 ratings)](https://appshunter.io/ios/app/phyphox/id1127319693/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/discovery-tool-our-voice/id1171935766/reviews) |
| Number of ratings | **276** | 3 |
| Positive reviews | 78.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 19 MB | 56 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) | [Stanford University](https://appshunter.io/developer/292922032) |

## 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


### Discovery Tool Our Voice

[App page](https://appshunter.io/ios/app/discovery-tool-our-voice/id1171935766)

Empower communities to collect and analyze local environmental data. Share findings with decision-makers to advocate for changes that promote health equity.

**Highlights:** Community data gathering, Data analysis tools, Decision-maker reporting, Environmental advocacy, Health equity focus

**In-app purchases:** none


## Frequently asked questions

### Is phyphox free?

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

### Is Discovery Tool Our Voice free?

Discovery Tool Our Voice is free to download, with no in-app purchases.

### Which has better reviews, phyphox or Discovery Tool Our Voice?

phyphox is rated higher. phyphox averages 4.6 out of 5 from 276 ratings, while Discovery Tool Our Voice averages 4.0 from 3 ratings.

### Do phyphox or Discovery Tool Our Voice have ads?

Neither phyphox nor Discovery Tool Our Voice shows ads.

### Which is updated more often, phyphox or Discovery Tool Our Voice?

phyphox ships an update every 3 months, and Discovery Tool Our Voice every 2 months. Most recently, phyphox was updated on October 17, 2026 and Discovery Tool Our Voice on October 14, 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.*