# OSpectrometer vs AquaHorti

The clearest difference is in-app purchases: AquaHorti at none against OSpectrometer's 2. OSpectrometer's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OSpectrometer sells 2 in-app purchases, starting at $2.99 per month. AquaHorti asks for nothing beyond the download.

OSpectrometer ships an update every 2 weeks, AquaHorti every 2 months. Both last shipped on September 10, 2026.

## The numbers

| Metric | OSpectrometer | AquaHorti |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (4 ratings)](https://appshunter.io/ios/app/ospectrometer/id6446124449/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 71 MB | 61 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETI](https://appshunter.io/developer/1674573382) | [健成 李](https://appshunter.io/developer/1055522601) |

## What reviewers say

### OSpectrometer

[App page](https://appshunter.io/ios/app/ospectrometer/id6446124449)

This app uses your device's camera and screen to perform basic optical spectroscopy. Analyze the visible light spectrum of objects, map light wavelengths to RGB values, and save or share your findings. It functions offline without external hardware.

**Highlights:** Visible light spectrum analysis, RGB color value mapping, Wavelength selection and scanning, Front camera reflection sensing, Save and share results, Offline functionality

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| month | $2.99 | per month |
| year | $9.99 | per year |


### AquaHorti

[App page](https://appshunter.io/ios/app/aquahorti/id6482231770)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OSpectrometer free?

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

### Is AquaHorti free?

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

### Do OSpectrometer or AquaHorti have ads?

Neither OSpectrometer nor AquaHorti shows ads.

### Which is updated more often, OSpectrometer or AquaHorti?

OSpectrometer ships an update every 2 weeks, and AquaHorti every 2 months. Most recently, OSpectrometer was updated on September 10, 2026 and AquaHorti on September 10, 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.*