# Bat Synth — A bat echolocation simulator

> A bat echolocation simulator (iPhone/iPad app by Phil Atkin.)

- Source: https://appshunter.io/ios/app/bat-synth/id6785821306 (this page in markdown: same URL + `.md`)
- Developer: [Phil Atkin](https://appshunter.io/developer/1751268739)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.6 · 1 MB
- Languages: American English
- Released: 2026-07-15
- Data updated: 2026-08-14
- User reviews in markdown: https://appshunter.io/ios/app/bat-synth/id6785821306/reviews.md

## What is Bat Synth?

Bat Synth is a tool for bat educators and trainers. By attaching a 384kHz USB-C DAC and ultrasonic amplifier / speaker (such as Bat Signal : https://www.pcbway.com/project/shareproject/Bat_Synth_2_b06cbf4c.html) to your phone you can create authentic-sounding bat echolocation calls, inaudible to humans, but which can then be revealed using a bat detector, or the Bat Detector iPhone app. 

In addition to bat calls a test tone generator is included, which can be used as part of bat education by illustrating how certain sounds can only be heard by young people, and other sounds cannot be heard by anyone at all as they are too high-pitched, and can only be revealed by a bat detector.

Included bat calls are : 

Simulated bat passes : 
Common Pipistrelle featuring echolocation calls, social calls and feeding buzz
Soprano Pipistrelle  featuring echolocation calls, social calls and feeding buzz

Echolocation calls only : 
Noctule
Serotine
Barbastelle
Brown Long-Eared Bat
Bechstein's Bat
Daubenton's Bat
Greater Horseshoe Bat
Lesser Horseshoe Bat 

The app operates by synthesizing a 5 second fragment of the bat call which is then looped. These fragments are stored as .wav files within the app in Files->On my Phone->Bat Synth so can be retrieved and analysed.


## Version history (last 3 releases)

### 1.2 — 2026-07-25

Along with the 10 predefined UK bat species you can now add up to 16 user-defined bat species, specified as bat calls with various parameters which are synthesized into realistic-sounding passes. Bat calls can feature a dominant 2nd harmonic (octave) to simulate leaf-nosed resonating bats, and calls can alternate to simulate e.g. Noctule and Barbastelle bats with tick/tock chip/chop call patterns.

### 1.1 — 2026-07-18

Improved UI (border colour of UI elements shows what is currently active), rebalanced levels of bat calls, 4-component PIPPYG social calls.

Modified selection of test frequencies to support Middle C and soprano High C.

Now if already synthesizing bats, just scrolling to another bats immediately synthesizes that bat - no need to press the GO button again.

### 1.0 — 2026-07-15

No release notes.

## More apps by Phil Atkin

- [Mellotronics Streetlytron '63](https://appshunter.io/ios/app/mellotronics-streetlytron-63/id1394220877)
- [St Just in Roseland Organ](https://appshunter.io/ios/app/st-just-in-roseland-organ/id1394221644)
- [Mellotronics Streetlytron Pro](https://appshunter.io/ios/app/mellotronics-streetlytron-pro/id1447100877)
- [Sopranotron 2](https://appshunter.io/ios/app/sopranotron-2/id1447101182)
- [Pipe Organ](https://appshunter.io/ios/app/pipe-organ/id1485889911)
- [Player Organ](https://appshunter.io/ios/app/player-organ/id1503483457)

All apps by Phil Atkin: https://appshunter.io/developer/1751268739

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*