# SylvacBT vs Light Meter LM

The clearest difference is review sentiment: Light Meter LM at 40% against SylvacBT's 0%. Light Meter LM also leads on rating (4.5 vs 4.0) and ratings volume (2.6K vs 2). SylvacBT's advantage is in-app purchases (none vs 3) and iOS requirement (7.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Light Meter LM sells 3 in-app purchases, starting at $3.49 per month. SylvacBT asks for nothing beyond the download.

Light Meter LM holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Light Meter LM has 2.6K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of SylvacBT's written reviews are positive against 40% of Light Meter LM's.

## The numbers

| Metric | SylvacBT | Light Meter LM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/sylvacbt-smart/id1395805716/reviews) | **[4.5 (2.6K ratings)](https://appshunter.io/ios/app/light-meter-lm-3000/id1554264761/reviews)** |
| Number of ratings | 2 | **2.6K** |
| Positive reviews | 0.0% of reviews | **40.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 22 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sylvac](https://appshunter.io/developer/1361588438) | [Lightray Innovation GmbH](https://appshunter.io/developer/1031383431) |

## What reviewers say

### SylvacBT

[App page](https://appshunter.io/ios/app/sylvacbt-smart/id1395805716)

This app enables communication with Sylvac Bluetooth Smart instruments. It allows for data sending, requesting, and exporting in XLS, PDF, or iCloud formats. Ensure your instrument's firmware is compatible for seamless operation.

**Highlights:** Connect to Sylvac Bluetooth Smart instruments, Send and request instrument data, Export data to XLS, PDF, and iCloud, Check instrument firmware compatibility

**In-app purchases:** none


### Light Meter LM

[App page](https://appshunter.io/ios/app/light-meter-lm-3000/id1554264761)

Transform your smartphone into a professional light meter. Measure illuminance and color temperature with scientifically validated accuracy, trusted by professionals. Requires a simple diffuser for precise readings.

**Highlights:** Measure illuminance (lux/foot-candle), Measure color temperature (Kelvin), Industry-leading accuracy, Pre-calibrated for your device, Low light sensitivity, Save peak reading, Custom calibration option

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Continuous Charging | $3.49 | per month |
| Single Charge | $0.99 | one-time |
| Unlimited Battery | $19.99 | one-time |

**What reviewers like**

- 👍 Great app
- 👍 Accurate measurements
- 👍 Easy to use
- 👍 Helpful customer service
- 👍 Useful for science/research

**What reviewers complain about**

- 🐛 Requires diffuser for accurate readings
- 💰 Expensive for a light meter app
- 🔋 Battery/trial period issues
- 🔍 Inconsistent/inaccurate readings
- 🙄 Misleading/deceptive marketing

**Reported bugs**

- Diffuser not recognized even when used
- App locks up/crashes
- Constant diffuser pop-up interruptions

**Requested features**

- Ability to use rear camera
- More flexible diffuser options
- Improved accuracy without diffuser


## Frequently asked questions

### Is SylvacBT free?

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

### Is Light Meter LM free?

Light Meter LM is free to download, with in-app purchases available.

### Which has better reviews, SylvacBT or Light Meter LM?

Light Meter LM is rated higher. SylvacBT averages 4.0 out of 5 from 2 ratings, while Light Meter LM averages 4.5 from 2.6K ratings.

### Do SylvacBT or Light Meter LM have ads?

Neither SylvacBT nor Light Meter LM shows ads.

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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.*