Echo v3.0.1
APK · 408.7 KB · version code 20 · Android 8.0+ · uploaded Jul 22, 2026
- Signature matches the Google Play version Details
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File information
- Version
- v3.0.1 (20)
- Uploaded
- Jul 22, 2026
- Size
- 408.7 KB
- Requires
- Android 8.0+ (API 26)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- b01eee84bde452698f2ab21bd84bfff6
- Signing certificate (SHA-1)
- 94:91:21:A5:B8:99:13:D4:BF:DF:EF:D1:10:A4:9C:E6:46:71:52:CB
- Signed by
- CN=Project Neon, O=Project Neon, L=London, C=GB
- File name
- uk-co-projectneon-echo-20-75759201-b01eee84bde452698f2ab21bd84bfff6.apk
- Package
- uk.co.projectneon.echo
- Downloads (all versions)
- 5M+
- Age rating
- PEGI 3 · Everyone
What's new in v3.0.1
Saving externally is fixed at last! A thousand apologies to anyone caught out by this, but saving externally has been restored and now allows you to select where the exported audio file should be saved.
More fixes to follow. We'd love your feedback: [email protected]
Permissions (2)
This version requests 2 permissions, 1 of them sensitive.
- Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
- Internal broadcast protection (app-defined) uk.co.projectneon.echo.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jul 22, 2026.
- Certificate issued to “Project Neon” This is the certificate of the Google Play version.
- Same certificate as the 2 other versions checked
Store checks
- Developer signature verified Jul 22, 2026
- Validated against Google Play Jul 22, 2026
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself.
How to install Echo on Android 8.0+
You'll need about 817.5 KB of free space.
- Download the APK — tap Download APK above (408.7 KB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap uk-co-projectneon-echo-20-75759201-b01eee84bde452698f2ab21bd84bfff6.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be b01eee84bde452698f2ab21bd84bfff6. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open Echo — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 8.0+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.