emf Spectrum
Scrollable image of the electromagnetic spectrum from DC to x-rays
Duncan Watson · com.v1.emfspectrum
- Signature matches the Google Play version Details
At a glance
- Latest version
- v1.0 (9)
- Updated
- Nov 24, 2025 (10 months ago)
- APK size
- 862.8 KB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Category
- Books & Reference (app)
- Listed since
- Oct 22, 2020 (at least)
- Developer contact
- [email protected]
About this APK
emf Spectrum is an app by Duncan Watson in the Books & Reference category, listed since at least October 2020. It has no native code, so it runs on any Android processor.
Description
From the listing uploaded by “appupdater”.
Security & authenticity
Signing certificate
- Signature matches the Google Play version Checked by the source store on Nov 24, 2025.
- Certificate issued to “Duncan Watson” This is the certificate of the Google Play version.
Store checks and file details
- Developer signature verified Nov 24, 2025
- Validated against Google Play Nov 24, 2025
- Signed byCN=Duncan Watson, L=Wellington, C=64
- Signing certificate (SHA-1)99:B7:21:2D:22:A9:02:2E:A4:DF:32:FB:28:15:19:40:91:54:07:37
- File MD56b180802cae88f2358bd517dfde7bd75
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Required hardware & features
- Basic touch input android.hardware.faketouch
emf Spectrum APK: questions and answers
Can I install this APK over the version I already have?
Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.
Is the emf Spectrum APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is 6b180802cae88f2358bd517dfde7bd75.
