# Lux Light Meter for Mobile vs Tkeeper

The clearest difference is rating: Lux Light Meter for Mobile at 4.5 against Tkeeper's 2.0. Lux Light Meter for Mobile also leads on ratings volume (236 vs 3). Tkeeper's advantage is in-app purchases (none vs 7) and ads (none vs shown). On price, update cadence, 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. Tkeeper asks for nothing beyond the download.

Lux Light Meter for Mobile holds the better App Store score, 4.5 against 2.0. That said, the two scores are not equally well evidenced: Lux Light Meter for Mobile has 236 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 18% of Lux Light Meter for Mobile's written reviews are positive against 50% of Tkeeper's, so the app with the better star average is not the one people write more warmly about.

Lux Light Meter for Mobile ships an update fortnightly, Tkeeper every 3 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Lux Light Meter for Mobile | Tkeeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (236 ratings)](https://appshunter.io/ios/app/lux-light-meter-for-mobile/id1638732220/reviews)** | [2.0 (3 ratings)](https://appshunter.io/ios/app/tkeeper/id6466933990/reviews) |
| Number of ratings | **236** | 3 |
| Positive reviews | 17.5% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 50 MB | 51 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WeBrain](https://appshunter.io/developer/1578514377) | [鲜境电子有限公司](https://appshunter.io/developer/1683983410) |

## 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 |


### Tkeeper

[App page](https://appshunter.io/ios/app/tkeeper/id6466933990)

This app connects to Bluetooth temperature and humidity data loggers to synchronize historical data. It allows configuration of device parameters for data collection and exports reports in PDF and CSV formats. Data and user information can be synchronized to cloud storage via user accounts.

**Highlights:** Connect Bluetooth data loggers, Synchronize history data, Configure device parameters, Export PDF and CSV reports, Cloud data synchronization

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

**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 Tkeeper free?

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

### Which has better reviews, Lux Light Meter for Mobile or Tkeeper?

Lux Light Meter for Mobile is rated higher. Lux Light Meter for Mobile averages 4.5 out of 5 from 236 ratings, while Tkeeper averages 2.0 from 3 ratings.

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

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

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

Lux Light Meter for Mobile ships an update fortnightly, and Tkeeper every 3 weeks. Most recently, Lux Light Meter for Mobile was updated on October 27, 2026 and Tkeeper on October 24, 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.*