PSK31 vs IWM Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PSK31
Decode and view ham radio PSK31 transmissions directly on your iPad. Tune into specific signals with a tap and see the decoded text, all without needing a separate computer. Features a waterfall display to visualize the audio spectrum.
- Monitor PSK31 transmissions
- View decoded text
- Waterfall display of audio spectrum
- Tap to tune into signals
- No computer required
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Want to monitor PSK31 transmissions, without using a bulky computer? PSK31 lets you view ham radio PSK31 transmissions on your iPad. Just set your iPad next to your radio, tune in a PSK31 frequency, and watch the decoded text. There's a waterfall display of the audio spectrum, showing all of the PSK31 transmission. Tap on a signal, and PSK31 tunes into that transmission. Get your copy of PSK31 right now, and start decoding and displaying PSK31 transmissions in minutes.
IWM Mobile
Engage with a global ministry through this app. Listen to podcasts, access the latest content, contribute financially, participate in discussions, and submit prayer requests. Build a stronger faith and connect with an international community.
- Listen to podcast episodes
- Access latest content
- Make donations
- Join discussions
- Offer prayer intentions
- Connect with global ministry
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Connect with us through the IWM Mobile app for Immanuel World Ministries! Listen to our latest podcast episodes and stay up to date with our latest content, give, join in discussions, offer prayer intentions, and connect with our worldwide ministry. We serve a total of 68 nations on 6 continents. IWM Mobile exists to help you build a stronger faith. Join our online community today!
Screenshots
Verdict
The clearest difference is review sentiment: IWM Mobile at 100% against PSK31's 52%. IWM Mobile also leads on price (Free vs $2.99) and rating (5.0 vs 3.6). PSK31's advantage is ratings volume (15 vs 1) and iOS requirement (6.0 vs 15.1). On 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
IWM Mobile is free to download; PSK31 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
IWM Mobile holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: PSK31 has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 52% of PSK31's written reviews are positive against 100% of IWM Mobile's.
PSK31 ships an update every 18 months, IWM Mobile every 3 weeks. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.
| Parameter | PSK31 | IWM Mobile |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.6 (15 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 52.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 15 — better | 1 |
| Update frequency | Every 18 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 6.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 1 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Black Cat Systems | Edward Sanchez |
Customer experience
PSK31
IWM Mobile
In-app purchases
PSK31
No in-app purchases
IWM Mobile
No in-app purchases
