# AquaInverts vs Bat Detector

The clearest difference is update cadence: AquaInverts at every 2 weeks against Bat Detector's monthly. AquaInverts also leads on iOS requirement (11.0 vs 17.0). 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.

AquaInverts ships an update every 2 weeks, Bat Detector monthly. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | AquaInverts | Bat Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/bat-detector/id6504186190/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 57.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | — | Free |
| Size | 193 MB | 159 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Aquaweb Ltd](https://appshunter.io/developer/850440451) | [Phil Atkin](https://appshunter.io/developer/1751268739) |

## What reviewers say

### AquaInverts

[App page](https://appshunter.io/ios/app/aquainverts/id1575932890)

**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 AquaInverts free?

AquaInverts 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 AquaInverts or Bat Detector have ads?

Neither AquaInverts nor Bat Detector shows ads.

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

AquaInverts ships an update every 2 weeks, and Bat Detector monthly. Most recently, AquaInverts was updated on October 27, 2026 and Bat Detector on October 30, 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.*