splotRF vs SWISS KNFE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
splotRF
Visualize and analyze touchstone S-parameter data with interactive plots. Supports multiple file overlays, stability calculations, and various matrix conversions. Export data in vector graphics formats.
- Plot .snp format S-parameter data
- Stability circles and µ/µ' analysis
- Overlay multiple trace data
- View data as a table
- S/Y/Z matrix conversion
- Smith Chart, Polar, and Rectangular plots
- Export to PDF
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Key Features: • plots .snp format s-parameter touchstone data • stability circles for load and source • µ and µ' for load and source stability • interactive data markers • overlay multiple trace data on a single plot • overlay trace data from multiple files • view data as a table list • arbitrary number of ports (.s1p, .s2p, s3p…snp support) • S/Y/Z matrix conversion • mA/RI/dB formatting • interpolation over frequency • exports vector graphics to .pdf • plotting display properties and configuration are saved within file comments • automated grid layout • Smith Chart, Polar and Rectangular plots • reads and plots .zip archives containing s-parameter data
SWISS KNFE
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SwissKnife – The Ultimate Sensor Cockpit Turn your Phone into a real-time dashboard: All essential data, beautifully visualized, always available—even offline. Features: • GPS: See your precise location • Street & City Info: Instantly see where you are • Compass: Find north and your heading, fast & accurate • Altitude: Get real-time elevation • Weather: Local temperature and icon, based on device sensors • Flashlight Control: Instantly turn your light on/off • Noise Meter: Check real-time dB around you • Level (Wasserwaage): Classic bubble-level for perfect alignment—top & side views • Velocity: Real-time speed using GPS • Privacy First: No data leaves your device. No storage. No ads. Why SwissKnife? • Works 100% offline—no internet needed • Minimalist, cockpit-inspired design • Instant sensor readings, no waiting • No accounts, no tracking, no data collection • For explorers, DIYers, pros, and the curious Your Phone, now a cockpit. Try SwissKnife—download free and Sensor the world!
Screenshots
Verdict
The clearest difference is update cadence: splotRF at every 10 days against SWISS KNFE's every 9 months. splotRF also leads on device support (3 vs 1) and iOS requirement (18.0 vs 26.2). On price, 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.
splotRF ships an update every 10 days, SWISS KNFE every 9 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | splotRF | SWISS KNFE |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 10 days — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 18.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 6 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | DirectRF | Matthias Ebneter |
In-app purchases
splotRF
No in-app purchases
SWISS KNFE
No in-app purchases
