# iSPEX vs OOS2025

The clearest difference is update cadence: OOS2025 at daily against iSPEX's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

iSPEX ships an update every 2 months, OOS2025 daily. The most recent releases landed on August 16, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | iSPEX | OOS2025 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/ispex/id584360175/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free | — |
| Size | 5 MB | 25 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DDQ](https://appshunter.io/developer/418328467) | [Copernicus.org](https://appshunter.io/developer/507132942) |

## What reviewers say

### iSPEX

[App page](https://appshunter.io/ios/app/ispex/id584360175)

This educational tool analyzes light entering a smartphone, breaking it down by spectrum and polarization. It requires a specific hardware add-on to function.

**Highlights:** Spectrum analysis, Polarization analysis, Hardware add-on integration, Educational tool

**In-app purchases:** none


### OOS2025

[App page](https://appshunter.io/ios/app/oos2025/id6745811938)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iSPEX free?

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

### Is OOS2025 free?

OOS2025 is free to download, with no in-app purchases.

### Do iSPEX or OOS2025 have ads?

Neither iSPEX nor OOS2025 shows ads.

### Which is updated more often, iSPEX or OOS2025?

iSPEX ships an update every 2 months, and OOS2025 daily. Most recently, iSPEX was updated on August 16, 2026 and OOS2025 on September 19, 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.*