Ham Solar | HAP Chart

Tool to show current HF propagation prediction.

Muhammad Zakwan · appinventor.ai_MzMd1494.HamSolar

Not rated yet 10K+ downloads v2.4.6 4.4 MB Android 2.1+ PEGI 3 · Everyone

Download APK 4.4 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.4.6 (36)
Updated: Nov 5, 2025 (11 months ago)
APK size: 4.4 MB
Requires: Android 2.1+ (API 7)
CPU support: Any (no native code)
Category: Tools (app)
Listed since: Mar 14, 2021 (at least)
Permissions: 2
Website: zmd94.com
Developer contact: [email protected]

About this APK

Ham Solar | HAP Chart is an app by Muhammad Zakwan in the Tools category, listed since at least March 2021. It has no native code, so it runs on any Android processor.

It asks for 2 permissions, none of them sensitive. It asks for the same permissions as version 2.4.5.

What's new in v2.4.6

v2.4.6 (23 July 2024) - Fix list code. - Update font typeface. - Update new app icon. - Update target API level requirement. v2.4.5 (14 November 2023) - Add follow url to Australian Space Weather Services. - Add follow url to HrdLog. - Add follow url to QRZ callsign database. - Fix HF band condition code. - Fix HAP chart map code. - Fix HrdLog QSO map code. - Fix QRX cluster code. - Fix setting code. - Remove clock component. *** Visit Url zmd94.com/solar to see full changelog.

Description

From the listing uploaded by “appupdater”.

[INTRO] Ham Solar is using code from Paul, N0NBH website. Its requires internet connection. [HAP CHART] Hourly Area Prediction (HAP) chart feature is also provided by this app. Its specifies the Maximum Usable Frequency (MUF) for HF communications between the base specified and any location on the map. The colors represent the MUF for communications between that location on the map and the base selected. Thus, if communications are required to or from Minneapolis, a HAP chart for Minneapolis should be used. The other end of the circuit is then found on the HAP chart and the color at that location gives the MUF for that circuit. HAP charts are charts based on current ionospheric conditions observed with ionosondes in the region of interest. This chart is only valid for the current hour due to the highly variable nature of the ionosphere. It is also helpful to view HAP chart propagation from the perspective of distant locations. In this manner you can determine if they are able to reach the Midwest with a usable MUF. If you love this app, please kindly to rate it and give donation to Paul. Just inform me via email if you find any problems.This app is fully designed by using MIT App Inventor 2. Regards, 9W2ZOW.

Version history

2 versions are listed, going back to v2.4.5.

v2.4.6 LATEST Nov 5, 2025 4.4 MB TRUSTED v2.4.5 Jun 4, 2024 4.2 MB TRUSTED

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Nov 5, 2025.
Certificate issued to “AppInventor for Android” This is the certificate of the Google Play version.
Same certificate as the other version checked

Store checks and file details

Developer signature verified Nov 5, 2025
Validated against Google Play Nov 5, 2025
Signed by[email protected], O=AppInventor for Android, C=US
Signing certificate (SHA-1)04:FB:2A:ED:4E:90:E5:44:85:61:DE:3E:DF:99:5E:62:7E:F7:22:E8
File MD5d89658f057c54094e13956ced14121c0
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 (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (2)

Ham Solar | HAP Chart requests 2 permissions, none of them sensitive.

Full network access android.permission.INTERNET
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch