Magnetic Storms vs On
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Magnetic Storms
Monitor Earth's magnetic field and solar activity in near real-time. Track Kp and A indices, solar wind speed, solar flares, and proton/electron flux. Predict auroras and magnetic storms.
- Real-time magnetic field monitoring
- Solar activity tracking
- Kp and A Index data
- Solar wind speed
- Solar flare detection
- Proton and electron flux
- Aurora prediction
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The Magnetic Storms application was originally developed to allow monitoring of the Earth's magnetic field in near real time, using data from GOES satellites that constantly monitor solar activity and a set of magnetic stations distributed around the Earth. With the improvement of the application due to the huge number of users and the availability of new parameters related to the Sun and Space Weather by the space agencies, lots of other information was added and they are shown in a simple and intuitive way. The main parameters presented are the Kp Index, the A Index, the instantaneous speed of the solar wind, the number of class C, M and X solar flares observed in X-rays, in addition to the flux of protons and electrons, flux of X-rays and magnetic field measurements observed by GOES-16. With an analysis of this information it is possible to anticipate sudden changes in the Earth's magnetic field at ground level and the occurrence of aurora with some advance. An ideal application for anyone who wants to monitor solar activity and its implications on Earth, such as problems in the transmission of radio and TV waves, blackouts in electricity transformer stations, auroras, magnetic storms. It is the perfect app for anyone interested in Space Weather in general, and is available in English, Portuguese, Spanish, Italian and French. As a way of keeping the app distributed for free and constantly updated, we kindly ask you to rate the app ("stars") and write a brief description of why you use it and (we hope you) enjoy it. Criticism and suggestions are always welcome at mikebm10.appledeveloper@gmail.com. NOTE: the parameters shown in the application are obtained from the research entities responsible for their collection and processing, and depend on the availability and access to the electronic servers of these entities. Any connection speed problems with the servers or temporary unavailability of information by those institutions can affect the functioning of the application, and are beyond the control of the developers. Problems should be reported by email mikebm10.appledeveloper@gmail.com, with a description of the observed effects. Please do not assign a low rating in the evaluation of the application for possible failures in the servers, which are not our responsibility. An email message will be promptly answered and possible measures will be taken. We thank you for your understanding.
On
This tool assists amateur radio operators with managing on-air nets and check-ins. It offers real-time messaging, email integration, and detailed operator information retrieval. The app supports multiple simultaneous sessions and configurable displays for efficient communication and tracking.
- Real-time net check-in tracking
- Instant messaging (AIM) sessions
- Integrated email client
- Configurable information displays
- QRZ/QRZCQ call sign lookup
- WebSDR audio streaming
- QRZ Logbook integration
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On-Air Net Scraper "Personal" Pro is an iPhone/iPad/MacOS silicon App providing a wide range of features for Amateur Radio operators (Hams). Key features include NetLogger Amateur Radio On-Air Nets, Check-Ins and multiple Almost Instant Message (AIM) sessions in real-time data awareness. AIM pass key automatic email request with single button click resulting in immediate pass key information reply. Full integrated Email client for yet another method for Hams to carry out conversations. Multiple tabbed displays allowing user to track unlimited number of On-Air Net Check-Ins at one time. User configurable information displays to included viewing detailed Ham information within Check-In views. Near real-time AIM client text message send and receive. Searching and viewing Past NetLogger Nets and Check-Ins. Monitor mode so users can be aware of NetLogger Check-In "lurkers". Simultaneous QRZ and QRZCQ login is supported facilitating Call Sign lookup and Ham information retrieval. Easy, click to display NetLogger Nets, Check-Ins Call Sign and operator status information, not requiring QRZ/CQ accounts. Multi-screen displays to included improved 2-way and 3-way split screens provide simultaneous displays of Check-Ins, AIM, AIM and Net Scraper Message Exchange current listing data along with WebSDR viewing and listening. PERSISTENT WebSDR radio LIVE audio listenings while simultaneously viewing multiple Net Check-In views. Seamlessly integrates with On-Air Net Scraper Desktop Server WebSocket Interface supporting private Internet chat sessions between On-Air Net Scraper ME clients. JS8Call/WSJTX full participation in digital radio REAL-TIME texting when using NetBird VPN or when paired with On-Air Net Scraper's Message Exchange (ME) Server. Autoload favorite NetLogger nets. Callsign search both NetLogger Active and Past net listing, including improved automatic continuous search and displaying of matched nets. QRZ Logbook insert/update/delete. Supports On-Device authentication and Two-Factor authentication in addition to encrypted secure storage of sensitive data and app access security. JS8Call dynamic frequency adjustment.
Screenshots
Verdict
The clearest difference is ads: On at none against Magnetic Storms's shown. On also leads on update cadence (monthly vs every 12 months) and monetization model (free vs free with in-app purchases). Magnetic Storms's advantage is review sentiment (82% vs 50%) and iOS requirement (12.4 vs 15.6). On price, rating, ratings volume 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.
On the App Store both sit at effectively the same score — 4.3 for Magnetic Storms against 4.4 for On. Both are backed by a comparable volume of ratings — 19 and 13 respectively. Written reviews are what separate them: 82% of Magnetic Storms's written reviews are positive against 50% of On's.
Magnetic Storms ships an update every 12 months, On monthly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Magnetic Storms | On |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (19 ratings) | 4.4 (13 ratings) — better |
| Positive reviews | 81.5% of reviews — better | 50.0% of reviews |
| Number of ratings | 19 — better | 13 |
| Update frequency | Every 12 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.4 — better | 15.6 |
| Further details — not scored | ||
| Size | 37 MB | 30 MB |
| Age rating | 4+ | 17+ |
| Developer | Andre Molina | Christopher Robson |
Customer experience
Magnetic Storms
On
Bugs and requests
Magnetic Storms
Reported bugs
9 issues- App quits updating
- Chart not updated
- Crashes on startup
- App crashes immediately
- App crashes on first run
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- App not working after updates
- Splash screen issue
- App not starting
- App offline for a week
Requested features
6 requests- Paid version without ads
- Local weather based on location
- Email or notification alerts for major magnetic storms
- Long-term/historical data
- Dark mode option
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- More elegant graphs
On
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Magnetic Storms
No in-app purchases
On
No in-app purchases







