Comparison

Jotron EPIRB vs SP2ALERT

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Jotron EPIRB

This utility configures and reads programming data from Jotron Tron AIS EPIRBs using NFC. Full programming requires a separate license, typically granted to Jotron customers who complete specific training. It offers the same functionality as the desktop software.

Highlights
  • Configure Jotron Tron AIS EPIRBs
  • Read programmed beacon data
  • NFC reader integration
  • Desktop software alternative
  • License required for full programming
Read full description

Jotron EPIRB is a tool to configure the Jotron Tron AIS EPIRBs. It will also allow read back of already programmed beacons. For full programming functionality, a separate license is required. This license is granted automatically to direct Jotron customers who have completed the Jotron Tron AIS EPIRB training course. To ease programming of beacons, familiarize yourself with the location of the NFC reader on your phone and place it as close as possible to the NFC location on the beacon. This tool does the same job as the TronLink EPIRB desktop programming software.

About

SP2ALERT

Features
Read full description

SP2ALERT is an alert app for amateur radio operators that delivers real-time push notifications for new POTA (Parks on the Air) and SOTA (Summits on the Air) spots. ■ POTA / SOTA Spot Alerts Automatically detects new spots and sends push notifications — even when the app is in the background. ■ Three Alert Modes (foreground only) • CW Vibration — vibrates in Morse code pattern (adjustable WPM and amplitude) • CW Tone — plays Morse code through the speaker (300–1500 Hz pitch) • Voice — reads spot information aloud (phonetic alphabet supported) ■ Flexible Filtering • Filter by band and mode (all bands from 160m to 13cm supported) • Filter by POTA program (JP, K, VK, etc.) or SOTA association • Include/exclude specific callsigns, park references, or summit references • Save and switch between multiple named presets ■ Hunt / Chase Management • Import POTA Hunt and SOTA Chase history via CSV • Alert only for unworked parks and summits • Multi-location activations (same operator at multiple parks) are always alerted even if one park is already hunted ■ Notification Controls • Configurable polling interval • Alert time window (e.g. 7:00–22:59 only) • Re-alert interval • Alert expiry timer • Additional alert on frequency/mode change ■ English / Japanese Localization The UI automatically switches between English and Japanese based on your device language setting. 【iOS Limitations】 Background operation is limited to notification banners and sounds. CW tone, voice, and vibration alerts only work while the app is in the foreground. Background polling timing is controlled by iOS and may be delayed beyond the configured interval.

Screenshots

Jotron EPIRB4 screens
SP2ALERT4 screens

Verdict

The call

The clearest difference is update cadence: SP2ALERT at every 2 days against Jotron EPIRB's every 8 months. Jotron EPIRB's advantage is iOS requirement (14.0 vs 16.0). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Jotron EPIRB ships an update every 8 months, SP2ALERT every 2 days. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 7 level
Jotron EPIRB versus SP2ALERT: the parameters behind the verdict, then further details
ParameterJotron EPIRBSP2ALERT
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 8 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better16.0
Further details — not scored
Size47 MB6 MB
Age rating4+4+
DeveloperJotron ASJIRO UENO

In-app purchases

None

Jotron EPIRB

No in-app purchases

None

SP2ALERT

No in-app purchases

Questions

Is Jotron EPIRB free?
Jotron EPIRB is free to download, with no in-app purchases.
Is SP2ALERT free?
SP2ALERT is free to download, with no in-app purchases.
Do Jotron EPIRB or SP2ALERT have ads?
Neither Jotron EPIRB nor SP2ALERT shows ads.
Which is updated more often, Jotron EPIRB or SP2ALERT?
Jotron EPIRB ships an update every 8 months, and SP2ALERT every 2 days. Most recently, Jotron EPIRB was updated on October 3, 2026 and SP2ALERT on October 12, 2026.

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