# iLlumination US vs Prelim360

The clearest difference is iOS requirement: Prelim360 at 15.6 against iLlumination US's 17.6. On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 19, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | iLlumination US | Prelim360 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (42 ratings)](https://appshunter.io/ios/app/illumination-us-flashlight/id385896092/reviews)** | — |
| Number of ratings | **42** | — |
| Positive reviews | 52.1% of reviews | — |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | — |
| Size | 23 MB | 43 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erik Storli](https://appshunter.io/developer/312277396) | [Alcazar, LLC](https://appshunter.io/developer/1475483623) |

## What reviewers say

### iLlumination US

[App page](https://appshunter.io/ios/app/illumination-us-flashlight/id385896092)

This universal flashlight app transforms your device into a powerful illumination tool. It offers LED and screen-based lighting, adjustable brightness, strobe effects, and Morse code functionality. Customize your light with color and contrast options for various needs.

**Highlights:** LED and screen flashlight, Adjustable strobe modes, Morse code functionality, Color picker for screen light, Adjustable screen contrast, Screen lock feature

**Features:** macOS Compatibility

**In-app purchases:** none


### Prelim360

[App page](https://appshunter.io/ios/app/prelim360/id6745491276)

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

**In-app purchases:** none


## Frequently asked questions

### Is iLlumination US free?

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

### Is Prelim360 free?

Prelim360 is free to download, with no in-app purchases.

### Which is updated more often, iLlumination US or Prelim360?

iLlumination US ships an update every 2 months, and Prelim360 every 2 months. Most recently, iLlumination US was updated on September 19, 2026 and Prelim360 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.*