# Glow Lamp vs BlackLight Summit

The clearest difference is in-app purchases: BlackLight Summit at none against Glow Lamp's 1. BlackLight Summit also leads on ads (none vs shown). Glow Lamp's advantage is update cadence (every 4 months vs every 12 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Glow Lamp sells 1 one-off in-app purchase. BlackLight Summit asks for nothing beyond the download.

Glow Lamp ships an update every 4 months, BlackLight Summit every 12 months. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Glow Lamp | BlackLight Summit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (36 ratings)](https://appshunter.io/ios/app/glow-lamp/id967821302/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 76.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 months** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 81 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Kaufman](https://appshunter.io/developer/967821301) | [University of Maryland](https://appshunter.io/developer/375852766) |

## What reviewers say

### Glow Lamp

[App page](https://appshunter.io/ios/app/glow-lamp/id967821302)

Transform your device into a dynamic mood lamp using a water bottle. Create relaxing ambient light with shifting colors and customizable effects, reminiscent of a modern lava lamp.

**Highlights:** Device-based mood lamp, Uses water bottle for light diffusion, Shifting color circles, Adjustable color speeds, Orbital accent circles, Customizable light effects

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### BlackLight Summit

[App page](https://appshunter.io/ios/app/blacklight-summit/id1606231887)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Glow Lamp free?

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

### Is BlackLight Summit free?

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

### Do Glow Lamp or BlackLight Summit have ads?

Glow Lamp shows ads; BlackLight Summit does not.

### Which is updated more often, Glow Lamp or BlackLight Summit?

Glow Lamp ships an update every 4 months, and BlackLight Summit every 12 months. Most recently, Glow Lamp was updated on October 16, 2026 and BlackLight Summit on October 25, 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.*