# BatLib vs Bat Detector

The clearest difference is update cadence: Bat Detector at monthly against BatLib's every 26 months. 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.

BatLib ships an update every 26 months, Bat Detector monthly. The most recent releases landed on December 13, 2025 and September 2, 2026 respectively.

## The numbers

| Metric | BatLib | Bat Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bat-detector/id6504186190/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Monthly** |
| Monetization | — | Free |
| Size | 38 MB | 136 MB |
| Requires iOS | 15.0 | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Elekon AG](https://appshunter.io/developer/1591447845) | [Phil Atkin](https://appshunter.io/developer/1751268739) |

## What reviewers say

### BatLib

[App page](https://appshunter.io/ios/app/batlib/id6469684050)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bat Detector

[App page](https://appshunter.io/ios/app/bat-detector/id6504186190)

Listen to and record the ultrasonic sounds of bats using your iPhone or iPad. This app reveals bat acoustics through heterodyne detection and 16x time expansion, making their calls audible and musical. It also offers full-spectrum recordings triggered by bat sounds.

**Highlights:** Heterodyne bat detection without manual tuning, 16x time expansion for audible bat sounds, Full-spectrum recordings triggered by bat sounds, Real-time sound demodulation, Preserves harmonic relationships in bat calls, Supports European and global microbats

**In-app purchases:** none


## Frequently asked questions

### Is BatLib free?

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

### Is Bat Detector free?

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

### Do BatLib or Bat Detector have ads?

Neither BatLib nor Bat Detector shows ads.

### Which is updated more often, BatLib or Bat Detector?

BatLib ships an update every 26 months, and Bat Detector monthly. Most recently, BatLib was updated on December 13, 2025 and Bat Detector on September 2, 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.*