HamAlert vs Frequency Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HamAlert
Receive instant push notifications for desired amateur radio contacts. Filter alerts by various criteria like callsign, band, mode, and location. Stay updated on DX spots from multiple sources.
- Push notifications for desired stations
- Filter spots by DXCC, callsign, and location
- Support for Reverse Beacon Network, SOTAwatch, DX cluster, PSK Reporter
- Filter by band, mode, and time
- Filter by spotter callsign and DXCC
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This app is a companion to the HamAlert web site (hamalert.org) and lets you receive push notifications from HamAlert. HamAlert is a system that allows amateur radio operators to get notifications when a desired station appears on the Reverse Beacon Network, SOTAwatch, the DX cluster or PSK Reporter. Spots can be filtered by various criteria, including: • DXCC (both actual and callsign home DXCC) • Callsign • Island reference • Summit reference • Park reference • CQ zone • Continent • Band • Mode • Time and days of week • Source • Spotter callsign and DXCC
Frequency Calculator
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Frequency ,notation for ν, is a physical quantity that produces the number of repetitions of a periodic phenomenon in a unit of time (periodic motion). It is equal to the inverse of the duration of one of the recurring events, period T.
Screenshots
Verdict
The clearest difference is iOS requirement: Frequency Calculator at 13.0 against HamAlert's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
HamAlert ships an update every 4 months, Frequency Calculator every 6 months. Both last shipped on September 17, 2026.
| Parameter | HamAlert | Frequency Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (29 ratings) — better | — |
| Positive reviews | 70.0% of reviews | — |
| Number of ratings | 29 — better | — |
| Update frequency | Every 4 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Manuel Kasper | STAGE CODING, Travnik |
In-app purchases
HamAlert
No in-app purchases
Frequency Calculator
No in-app purchases
Questions
Is HamAlert free?
Is Frequency Calculator free?
Do HamAlert or Frequency Calculator have ads?
Which is updated more often, HamAlert or Frequency Calculator?
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