# OSpectrometer vs PimaSpec

The clearest difference is in-app purchases: PimaSpec at none against OSpectrometer's 2. PimaSpec also leads on iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 10, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | OSpectrometer | PimaSpec |
| --- | --- | --- |
| 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 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 71 MB | 28 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETI](https://appshunter.io/developer/1674573382) | [PimaSens Inc.](https://appshunter.io/developer/1679893634) |

## 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 |


### PimaSpec

[App page](https://appshunter.io/ios/app/pimaspec/id6446971144)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OSpectrometer free?

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

### Is PimaSpec free?

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

### Do OSpectrometer or PimaSpec have ads?

Neither OSpectrometer nor PimaSpec shows ads.

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

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