iMSO2 vs splotRF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iMSO2
Analyze analog and digital signals on your mobile device using specialized hardware. Offers a demo mode for simulated wave display and measurements, with full functionality unlocked by purchasing the iMSO-204 mixed signal oscilloscope hardware.
- Analyze analog and digital signals
- Simulated wave display
- Cursors with measurements
- Direct signal measurements
- Analog and digital triggering
- Hardware integration
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Oscilloscope your phone, touch or tablet! iMSO2 allows you to analyze 2 analog and up to 4 digital signals using the iMSO-204 mixed signal oscilloscope hardware. Although demo mode is available for free with this download, hardware must be purchased to fully enable the product. - It's the first mixed signal oscilloscope available in the app store (50MSPS / 5MHz) - Easiest, most intuitive scope you’ll ever use - Preferred scope for the next generation of inventors Software demo mode includes: - Simulated wave display (sine, square, sawtooth, and triangular) - Cursors w/ measurements - Direct signal measurements - Analog triggering - Run / Stop / Single mode Hardware mode includes: - Analog triggering - Digital triggering - Cursors w/ measurements - Direct signal measurements - 1x or 10x probe setting - Run / STOP / Single mode Hardware works with the following devices: - iPad mini 3 - iPad mini 2 - iPad mini - iPad Air 2 - iPad Air - iPad 4 - iPad 3 - iPad 2 - iPad - iPhone 6 Plus - iPhone 6 - iPhone 5C - iPhone 5S - iPhone 5 - iPhone 4S - iPhone 4 - iPhone 3GS - iPod touch [3rd (32GB only), 4th and 5th generation)
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
Screenshots
Verdict
The clearest difference is update cadence: splotRF at every 10 days against iMSO2's every 2 months. iMSO2's advantage is iOS requirement (11.0 vs 18.0). On price, rating, ratings volume and ads 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 — 5.0 for iMSO2 against 5.0 for splotRF. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
iMSO2 ships an update every 2 months, splotRF every 10 days. Both last shipped on October 13, 2026.
| Parameter | iMSO2 | splotRF |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 | 2 |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 11.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 11 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Oscium LLC | DirectRF |
Customer experience
iMSO2
splotRF
In-app purchases
iMSO2
No in-app purchases
splotRF
No in-app purchases
