# Glow Lamp vs Flash Sync

Glow Lamp and Flash Sync both sit at 4.4 stars, but that hides the real split: 76% of Glow Lamp's written reviews are positive against 50% of Flash Sync's. Flash Sync's advantage is update cadence (every 5 weeks vs every 4 months) and ratings volume (161 vs 36). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Glow Lamp sells 1 one-off in-app purchase and Flash Sync sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.4 for Glow Lamp against 4.5 for Flash Sync. Both are backed by a comparable volume of ratings — 36 and 161 respectively. Written reviews are what separate them: 76% of Glow Lamp's written reviews are positive against 50% of Flash Sync's.

Glow Lamp ships an update every 4 months, Flash Sync every 5 weeks. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Glow Lamp | Flash Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (36 ratings)](https://appshunter.io/ios/app/glow-lamp/id967821302/reviews) | **[4.5 (161 ratings)](https://appshunter.io/ios/app/flash-sync-light-show-strobe/id1021930682/reviews)** |
| Number of ratings | 36 | **161** |
| Positive reviews | **76.3% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 16 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Kaufman](https://appshunter.io/developer/967821301) | [Sounak Sarkar](https://appshunter.io/developer/938584928) |

## 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 |


### Flash Sync

[App page](https://appshunter.io/ios/app/flash-sync-light-show-strobe/id1021930682)

Transform any space into a vibrant party atmosphere. This app synchronizes your device's flashlight with the beats of any audio file, creating a dynamic light show. It also offers screen blinking for devices without a flashlight and advanced features through a premium subscription.

**Highlights:** Flashlight sync with audio beats, Screen blinking for non-flashlight devices, Play any audio file, Microphone input, Five different visual modes, Sync multiple devices, External speaker support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $0.99 | per month |
| Premium Yearly | $5.99 | per year |
| Remove advertisements | $0.99 | one-time |


## Frequently asked questions

### Is Glow Lamp free?

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

### Is Flash Sync free?

Flash Sync is free to download, with in-app purchases available.

### Which has better reviews, Glow Lamp or Flash Sync?

Flash Sync is rated higher. Glow Lamp averages 4.4 out of 5 from 36 ratings, while Flash Sync averages 4.5 from 161 ratings.

### Do Glow Lamp or Flash Sync have ads?

Both Glow Lamp and Flash Sync show ads.

### Which is updated more often, Glow Lamp or Flash Sync?

Glow Lamp ships an update every 4 months, and Flash Sync every 5 weeks. Most recently, Glow Lamp was updated on October 16, 2026 and Flash Sync on October 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.*