# Timber Tree Height Estimator vs OnDutyControl

The clearest difference is price: OnDutyControl at Free against Timber Tree Height Estimator's $1.99. OnDutyControl also leads on update cadence (every 2 months vs every 6 months). Timber Tree Height Estimator's advantage is iOS requirement (7.0 vs 11.0). On ads, in-app purchases and device support there is nothing between them.

OnDutyControl is free to download; Timber Tree Height Estimator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Timber Tree Height Estimator ships an update every 6 months, OnDutyControl every 2 months. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Timber Tree Height Estimator | OnDutyControl |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.0 (7 ratings)](https://appshunter.io/ios/app/timber-tree-height-estimator/id921705279/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 7 MB | 11 MB |
| Requires iOS | **7.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Crop Applications, LLC.](https://appshunter.io/developer/563015362) | [Digitalisiere Jetzt 42 GmbH](https://appshunter.io/developer/1480100999) |

## What reviewers say

### Timber Tree Height Estimator

[App page](https://appshunter.io/ios/app/timber-tree-height-estimator/id921705279)

Estimate the height of trees and other objects using your device's GPS and camera. It calculates height based on your distance and the angle to the top of the object, also showing a potential fall zone on a map.

**Highlights:** Estimate tree height, Estimate any object's height, Map visualization of fall zone, GPS positioning, Angle measurement, Adjustable location settings

**Features:** macOS Compatibility

**In-app purchases:** none


### OnDutyControl

[App page](https://appshunter.io/ios/app/ondutycontrol/id1480101000)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Timber Tree Height Estimator free?

Timber Tree Height Estimator costs $1.99, with no in-app purchases.

### Is OnDutyControl free?

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

### Do Timber Tree Height Estimator or OnDutyControl have ads?

Neither Timber Tree Height Estimator nor OnDutyControl shows ads.

### Which is updated more often, Timber Tree Height Estimator or OnDutyControl?

Timber Tree Height Estimator ships an update every 6 months, and OnDutyControl every 2 months. Most recently, Timber Tree Height Estimator was updated on October 8, 2026 and OnDutyControl 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.*