# LIGHTmetric ONE App vs Spectroscope

The clearest difference is price: LIGHTmetric ONE App at Free against Spectroscope's $14.99. Spectroscope's advantage is update cadence (every 5 days vs every 5 months) and chart position (#180 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

LIGHTmetric ONE App is free to download; Spectroscope costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LIGHTmetric ONE App ships an update every 5 months, Spectroscope every 5 days. The most recent releases landed on October 19, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | LIGHTmetric ONE App | Spectroscope |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Best chart rank | — | **#180** |
| Size | 5 MB | 25 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Gigahertz Optik GmbH](https://appshunter.io/developer/1745074329) | [LEONARDO TAZZINI](https://appshunter.io/developer/1751785749) |

## What reviewers say

### LIGHTmetric ONE App

[App page](https://appshunter.io/ios/app/lightmetric-one-app/id6502341060)

**Features:** macOS Compatibility

**In-app purchases:** none


### Spectroscope

[App page](https://appshunter.io/ios/app/spectroscope/id6741684078)

**Currently charting:** #180 Top Paid · Utilities (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is LIGHTmetric ONE App free?

LIGHTmetric ONE App is free to download, with no in-app purchases.

### Is Spectroscope free?

Spectroscope costs $14.99, with no in-app purchases.

### Do LIGHTmetric ONE App or Spectroscope have ads?

Neither LIGHTmetric ONE App nor Spectroscope shows ads.

### Which is updated more often, LIGHTmetric ONE App or Spectroscope?

LIGHTmetric ONE App ships an update every 5 months, and Spectroscope every 5 days. Most recently, LIGHTmetric ONE App was updated on October 19, 2026 and Spectroscope on October 8, 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.*