# Animal Sensor vs LEHMANN Transponder

The clearest difference is update cadence: Animal Sensor at every 4 months against LEHMANN Transponder's every 10 months. Animal Sensor also leads on iOS requirement (12.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Animal Sensor ships an update every 4 months, LEHMANN Transponder every 10 months. The most recent releases landed on October 19, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Animal Sensor | LEHMANN Transponder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Size | 34 MB | 3 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Biocontrol](https://appshunter.io/developer/1586087157) | [Lehmann Vertriebsges. mbH & Co. KG](https://appshunter.io/developer/980603055) |

## What reviewers say

### Animal Sensor

[App page](https://appshunter.io/ios/app/animal-sensor/id1609202056)

**Features:** macOS Compatibility

**In-app purchases:** none


### LEHMANN Transponder

[App page](https://appshunter.io/ios/app/lehmann-transponder/id1637886496)

**In-app purchases:** none


## Frequently asked questions

### Is Animal Sensor free?

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

### Is LEHMANN Transponder free?

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

### Do Animal Sensor or LEHMANN Transponder have ads?

Neither Animal Sensor nor LEHMANN Transponder shows ads.

### Which is updated more often, Animal Sensor or LEHMANN Transponder?

Animal Sensor ships an update every 4 months, and LEHMANN Transponder every 10 months. Most recently, Animal Sensor was updated on October 19, 2026 and LEHMANN Transponder on October 4, 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.*