# Spectrometry vs iORA

The clearest difference is rating: iORA at 5.0 against Spectrometry's 4.0. iORA also leads on update cadence (every 2 months vs every 6 months) and device support (3 vs 1). Spectrometry's advantage is iOS requirement (11.0 vs 14.3). On price, review sentiment, 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.

iORA holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 12 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Spectrometry ships an update every 6 months, iORA every 2 months. The most recent releases landed on September 16, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Spectrometry | iORA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/spectrometry/id893384720/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/iora-reaction-visualizer/id1609524913/reviews)** |
| Number of ratings | 4 | **12** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 43 MB | 40 MB |
| Requires iOS | **11.0** | 14.3 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PASCO scientific](https://appshunter.io/developer/361907184) | [Daniel Ess](https://appshunter.io/developer/1609524915) |

## What reviewers say

### Spectrometry

[App page](https://appshunter.io/ios/app/spectrometry/id893384720)

This application allows students and teachers to conduct spectrometry experiments using a wireless spectrometer. It measures and analyzes absorbance, transmittance, and fluorescence, supporting full spectrum analysis and Beer's law experiments. The software offers tools for calibration, comparison, and data plotting for educational purposes.

**Highlights:** Measure absorbance, transmittance, fluorescence, Full spectrum analysis, Beer's law and kinetics experiments, Compare multiple spectra, Calibrate dark and reference spectra, Plot absorbance and transmittance, Determine unknown concentration

**In-app purchases:** none


### iORA

[App page](https://appshunter.io/ios/app/iora-reaction-visualizer/id1609524913)

Visualize chemical reactions in 3D using quantum-mechanical simulations. This free, interactive application makes complex chemistry concepts accessible and engaging for learners.

**Highlights:** 3D chemical reaction visualization, Quantum-mechanical simulations, Interactive learning, Easy to use interface, Educational tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Spectrometry free?

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

### Is iORA free?

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

### Which has better reviews, Spectrometry or iORA?

iORA is rated higher. Spectrometry averages 4.0 out of 5 from 4 ratings, while iORA averages 5.0 from 12 ratings.

### Do Spectrometry or iORA have ads?

Neither Spectrometry nor iORA shows ads.

### Which is updated more often, Spectrometry or iORA?

Spectrometry ships an update every 6 months, and iORA every 2 months. Most recently, Spectrometry was updated on September 16, 2026 and iORA on September 7, 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.*