Dial Upstrum vs PitchMonitorPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dial Upstrum
Transform classic modem sounds into a unique musical instrument. Explore phase and pitch variations to create distinctive audio and visuals, and integrate with AUv3 hosts for advanced music production.
- Play 56k modem handshake sounds as an instrument
- Adjust phase and pitch of sounds
- Modify visuals alongside audio
- AUv3 plugin support
- Inspired by ZX Plectrum
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Boot up that beige box, hear the sweet symphony of your 56k modem screeching into life, and prepare to surf the information superhighway like it's 1999! Play the 56k DialUp handshake sounds as a musical instrument on your iPhone or iPad! Change the modem sounds (and visuals) phase and pitch to make some weird, wonderful and familiar sounds! Plugin to your favourite AUv3 host and make unique music unlike anything else. Log on. Dial in. Based on the critically acclaimed ZX Plectrum! (but with more sounds and flexibility!) What people say about ZX Plectrum: "As seen on TV" on Dara O Briain's Go 8 Bit Used by multi-Platinum band Placebo in their live events. "ZX Plectrum lets you make music Spectrum style on your iPhone" pocket-lint.com "Utterly pointless but also utterly engaging" bamm.tv "For Nostlagia lovers of a very specific demographic this will sound like heaven" calmdowntom.com "The Greatest iPad App of ALL TIME" conoroneill.net
PitchMonitorPro
This app provides real-time vocal pitch detection and analysis for singers. It offers tools for practicing with reference tracks, comparing performances, and tracking progress over time with detailed reports and history.
- Real-time pitch detection
- Audio file analysis
- Dual-track comparison
- Practice scoring
- A-B loop practice
- Practice history
- Exportable reports
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Hear yourself clearly. Practice with purpose. Track every breakthrough. Pitch Monitor Pro is the complete vocal training kit — every feature from the free version, plus deep practice tools designed for singers who want to see real progress, not just real-time pitch. SING. DETECT. COMPARE. PRACTICE. PROGRESS. Mic — Always-on pitch detection Open the app and start singing. Your pitch, frequency, and note name appear instantly. No setup. No delay. Analyze — Hear what you actually sang Import any audio file and see the full pitch curve laid out in front of you. Scrub through the timeline, spot the moments that need work, and listen back with precision. Dual — Sing with a reference. See the gap. Load a reference track, sing along, and watch your pitch line follow the original in real time. The cents meter tells you exactly how close you are — and where you drifted. PRO FEATURES Practice Report — A score for every session Finish a Dual-Track session and get an instant, multi-dimensional report: pitch accuracy, stability, and long-tone control. Each take is graded 0–100 so you can compare runs and see real improvement. Pitch Curve Comparison — Reference vs. you, side by side Overlay your performance onto the reference curve. Spot the exact bars where you went sharp, flat, or unstable — and target them next time. A-B Loop Practice — Drill the hard parts Long-press the timeline to mark any section, then loop it. Every take saves a ghost trail of your previous attempts so you can watch yourself getting closer with each pass. Practice History — Watch yourself improve Every session is saved automatically. Open the history to revisit past performances and see how your scores have evolved. Export — Share your wins Export any practice report as an image. Send it to your vocal coach, post your progress, or keep a personal log of breakthrough sessions. Built for singers, musicians, vocal coaches, and anyone serious about pitch. — Real-time pitch detection with ultra-low latency — File analysis with pre-processing for accurate results — Dual-track comparison with live cents deviation — Multi-dimensional practice scoring (pitch / stability / long tone) — A-B loop practice with ghost trail of previous takes — Full practice history with replay — Export reports as shareable images — Adjustable frequency range for any voice or instrument — Clean, distraction-free visualization
Screenshots
Verdict
Dial Upstrum and PitchMonitorPro both sit at 3.7 stars, but that hides the real split: 33% of PitchMonitorPro's written reviews are positive against 0% of Dial Upstrum's. PitchMonitorPro also leads on iOS requirement (16.6 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
Dial Upstrum costs $3.99 and PitchMonitorPro $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 3.7 for Dial Upstrum against 3.7 for PitchMonitorPro. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews are what separate them: 0% of Dial Upstrum's written reviews are positive against 33% of PitchMonitorPro's.
| Parameter | Dial Upstrum | PitchMonitorPro |
|---|---|---|
| Price | $3.99 | $3.99 |
| Rating | 3.7 (3 ratings) | 3.7 (3 ratings) |
| Positive reviews | 0.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 3 | 3 |
| Update frequency | — | Every 10 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 43 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | Dave Sapien Ltd. | Weijyun Jhou |
Customer experience
Dial Upstrum
PitchMonitorPro
In-app purchases
Dial Upstrum
No in-app purchases
PitchMonitorPro
No in-app purchases









