# Spectrolite vs Physics Labs

The clearest difference is in-app purchases: Physics Labs at none against Spectrolite's 1. Physics Labs also leads on update cadence (every 2 weeks vs every 8 months) and review sentiment (100% vs 83%). Spectrolite's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Spectrolite sells 1 one-off in-app purchase. Physics Labs asks for nothing beyond the download.

Spectrolite ships an update every 8 months, Physics Labs every 2 weeks. The most recent releases landed on September 23, 2026 and June 9, 2026 respectively.

## The numbers

| Metric | Spectrolite | Physics Labs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (51 ratings)](https://appshunter.io/ios/app/spectrolite/id1480240180/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 1 MB | 32 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Waxing Wave](https://appshunter.io/developer/392942046) | [Huseyin Aykut Uludag](https://appshunter.io/developer/1469165629) |

## What reviewers say

### Spectrolite

[App page](https://appshunter.io/ios/app/spectrolite/id1480240180)

This app visualizes sound in real-time using various spectrogram types. Explore detailed audio data with intuitive touch controls and adjustable parameters. An optional purchase unlocks advanced measurement tools.

**Highlights:** Real-time spectrogram visualization, Constant-Q, linear, and mel frequency scales, Full human hearing frequency range, Intuitive touch panning and zooming, Adjustable gain, Q, and other parameters, Pro version: grids, scales, spectrum view, tap-to-measure

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | one-time |


### Physics Labs

[App page](https://appshunter.io/ios/app/physics-labs/id6472849584)

This app uses your device's sensors to measure various physical quantities like acceleration, magnetic fields, and sound levels. View data in coordinates or scalar magnitude, and export it to Excel for analysis. It's a digital lab for your phone.

**Highlights:** Measure acceleration, magnetic fields, and sound levels, View data in X, Y, Z coordinates or scalar magnitude, Export sensor data to Excel for analysis, Eliminate gravity from acceleration measurements, Measure atmospheric pressure

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Spectrolite free?

Spectrolite is free to download, with in-app purchases available.

### Is Physics Labs free?

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

### Do Spectrolite or Physics Labs have ads?

Physics Labs shows ads; Spectrolite does not.

### Which is updated more often, Spectrolite or Physics Labs?

Spectrolite ships an update every 8 months, and Physics Labs every 2 weeks. Most recently, Spectrolite was updated on September 23, 2026 and Physics Labs on June 9, 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.*