# Light Meter LM vs Tree Height Meter

The clearest difference is rating: Light Meter LM at 4.5 against Tree Height Meter's 1.0. Light Meter LM also leads on ads (none vs shown) and ratings volume (2.6K vs 1). Tree Height Meter's advantage is in-app purchases (none vs 3) and update cadence (every 3 days vs monthly). On price and iOS requirement there is nothing between them.

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

Light Meter LM holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Light Meter LM has 2.6K ratings behind it against 1, so its average is the more settled of the two.

Light Meter LM ships an update monthly, Tree Height Meter every 3 days. The most recent releases landed on October 20, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Light Meter LM | Tree Height Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.6K ratings)](https://appshunter.io/ios/app/light-meter-lm-3000/id1554264761/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/tree-height-meter/id6784830694/reviews) |
| Number of ratings | **2.6K** | 1 |
| Positive reviews | 40.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 22 MB | 49 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Lightray Innovation GmbH](https://appshunter.io/developer/1031383431) | [heekyung moon](https://appshunter.io/developer/6779193748) |

## What reviewers say

### 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


### Tree Height Meter

[App page](https://appshunter.io/ios/app/tree-height-meter/id6784830694)

Estimate the height of trees, poles, and buildings using your phone's camera and trigonometry. Offers two measurement methods and can also calculate distance and area. Useful for professionals and curious individuals alike.

**Highlights:** Estimates tree, pole, and building heights, Two-point and eye-height measurement methods, Live elevation-angle readout, Distance and area calculation, Timber volume estimation, Exportable measurement history

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

**In-app purchases:** none


## Frequently asked questions

### Is Light Meter LM free?

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

### Is Tree Height Meter free?

Tree Height Meter is free to download, with no in-app purchases.

### Which has better reviews, Light Meter LM or Tree Height Meter?

Light Meter LM is rated higher. Light Meter LM averages 4.5 out of 5 from 2.6K ratings, while Tree Height Meter averages 1.0 from 1 ratings.

### Do Light Meter LM or Tree Height Meter have ads?

Tree Height Meter shows ads; Light Meter LM does not.

### Which is updated more often, Light Meter LM or Tree Height Meter?

Light Meter LM ships an update monthly, and Tree Height Meter every 3 days. Most recently, Light Meter LM was updated on October 20, 2026 and Tree Height Meter on October 12, 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.*