# Lux Light Meter for Mobile vs UBio

The clearest difference is in-app purchases: UBio at none against Lux Light Meter for Mobile's 7. UBio also leads on ads (none vs shown). Lux Light Meter for Mobile's advantage is update cadence (fortnightly vs every 6 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Lux Light Meter for Mobile sells 7 in-app purchases, starting at $2.99 per 7 days. UBio asks for nothing beyond the download.

Lux Light Meter for Mobile ships an update fortnightly, UBio every 6 months. The most recent releases landed on September 23, 2026 and May 15, 2026 respectively.

## The numbers

| Metric | Lux Light Meter for Mobile | UBio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (229 ratings)](https://appshunter.io/ios/app/lux-light-meter-for-mobile/id1638732220/reviews)** | — |
| Number of ratings | **229** | — |
| Positive reviews | 17.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 9 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WeBrain](https://appshunter.io/developer/1578514377) | [UNION biometrics Co., Ltd.](https://appshunter.io/developer/937089081) |

## What reviewers say

### Lux Light Meter for Mobile

[App page](https://appshunter.io/ios/app/lux-light-meter-for-mobile/id1638732220)

This app provides accurate and easy-to-use light measurements in lux and foot candles. It's ideal for photographers, plant owners, and anyone needing to assess ambient light levels in various spaces. Features include real-time color temperature measurement and calculation of the daily light integral.

**Highlights:** Real-time color temperature measurement, Lux and foot candle measurements, Daily light integral (DLI) calculation, Average and Max values, Optimal shooting value selection, Adjustable shooting values (shutter speed, aperture, ISO)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lux Light Meter Pro | $2.99 | per 7 days |
| Light Meter 1 Week | $2.99 | per 7 days |
| Lux Light Meter | $5.99 | per month |
| Light Meter | $5.99 | per month |
| Lux Meter | $7.99 | per year |
| Light Meter Pro | $14.99 | per year |
| Light Meter for Mobile | $14.99 | per year |


### UBio

[App page](https://appshunter.io/ios/app/ubio-n-initializer/id6480284926)

**In-app purchases:** none


## Frequently asked questions

### Is Lux Light Meter for Mobile free?

Lux Light Meter for Mobile is free to download, with in-app purchases available.

### Is UBio free?

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

### Do Lux Light Meter for Mobile or UBio have ads?

Lux Light Meter for Mobile shows ads; UBio does not.

### Which is updated more often, Lux Light Meter for Mobile or UBio?

Lux Light Meter for Mobile ships an update fortnightly, and UBio every 6 months. Most recently, Lux Light Meter for Mobile was updated on September 23, 2026 and UBio on May 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*