# Slice vs Lumen

The clearest difference is price: Slice at Free against Lumen's $9.99. Slice also leads on iOS requirement (15.0 vs 17.0). Lumen's advantage is update cadence (fortnightly vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

Slice is free to download; Lumen costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Slice ships an update every 2 months, Lumen fortnightly. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Slice | Lumen |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 288 MB | 166 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Roy Rodenhauser](https://appshunter.io/developer/1818681968) | [Marco Tini](https://appshunter.io/developer/544232459) |

## What reviewers say

### Slice

[App page](https://appshunter.io/ios/app/slice-ar/id6746819867)

**In-app purchases:** none


### Lumen

[App page](https://appshunter.io/ios/app/lumen-dicom-viewer/id6776353922)

**In-app purchases:** none


## Frequently asked questions

### Is Slice free?

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

### Is Lumen free?

Lumen costs $9.99, with no in-app purchases.

### Do Slice or Lumen have ads?

Neither Slice nor Lumen shows ads.

### Which is updated more often, Slice or Lumen?

Slice ships an update every 2 months, and Lumen fortnightly. Most recently, Slice was updated on October 11, 2026 and Lumen on October 12, 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.*