Level Tool vs Ivory Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Level Tool
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Use the level, compass and calibrated screen ruler for free. Check surfaces and slopes with two level modes. The screen protractor is also free. Each Pro tool can be unlocked separately with a one-time purchase. Pro • Camera level • AR tape measure • Magnetic scanner • Camera angle • Quick Rectangle Measurement journal Keep measurements, notes and photo reports together on this device. Pro adds virtual laser guides, AR distances and magnetic field readings. Save measurements and photos to project journals and share PDF reports with Pro. Virtual camera guides. The phone does not project a laser beam. Approximate measurement. Use a physical ruler when exact dimensions matter. Measurements and photos stay in this app on your device. Export only what you choose to share. Read your direction relative to magnetic north. Live bearing · no GPS needed. Some tools require compatible hardware. Terms of Use: https://levelpro.pages.dev/terms-of-use
Ivory Pro
This professional-grade tuning suite offers unparalleled acoustic precision for piano technicians and musicians. It features specialized piano profiles, client management, and advanced inharmonicity-aware stretch tuning for accurate pitch adjustments.
- Custom hybrid DSP engine
- Sub-cent frequency accuracy
- Specialized piano profiles
- Client & Profile Manager
- Inharmonicity-aware stretch tuning
- Pitch Raise Wizard
- Historic temperaments
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IVORY PRO - The Professional-Grade Piano Tuner for the Apple Ecosystem **Engineered for Ultimate Acoustic Precision** Ivory Pro is a masterclass tuning suite for piano technicians and professional musicians. Leveraging a custom hybrid DSP engine, Ivory Pro delivers sub-cent frequency accuracy across the complete 88-key piano range (A0 to C8). Experience the power of professional bench-tuning equipment on your iPhone, iPad, or Mac. **Specialized Piano Profiles** Built-in physical models optimized for specific architectures: • **Concert Grand:** Smooth, highly-damped response for slow-decaying strings. • **Upright:** Balanced physics for shorter strings. • **Electric Piano:** Lightning-fast detection for Rhodes/Wurlitzer tines. • **Spinet:** High-damping for highly-inharmonic configurations. • **Custom Mode:** Fully adjust DSP smoothing, needle response, damping, and noise gates. **Client & Profile Manager** Organize your work with an integrated database. Save custom profiles for specific clients and instruments. Profiles store names, notes, A4 references, DSP settings, and historic temperaments—restoring the exact environment per client. **Inharmonicity-Aware Stretch Tuning** Pianos cannot be tuned to perfect equal temperament due to string stiffness. Ivory Pro integrates a real-time Railsback stretch tuning engine. Use the **Inharmonicity Profile Wizard** to measure the actual string physics of your piano, generating a custom, mathematically perfect stretch curve based on professional octave-harmonic matching (6:3, 4:2, 2:1 rules). **Smart Pitch Raise & Tuning History** The built-in Pitch Raise Wizard automatically calculates tension deficits to generate a perfectly tailored overpull profile. Document your work with complete Tuning History snapshots, graphing pitch drift over time to track long-term structural stability. **Historic Temperaments** Explore historic temperaments with mathematically precise offsets for Werckmeister III, Kirnberger III, and Meantone (1/4 Comma). **Professional Visualizers** • **Strobe Tuning:** The ultimate standard for precision. A dynamic, multi-band concentric strobe ring visually rotates based on phase offset, providing sub-cent accuracy at a glance. • **Harmonic Spectrum Analyzer:** A 60fps FFT plot renders the live spectrum of your strings, letting you visually spot false beats and analyze overtone strength. **State-of-the-Art Hybrid DSP Engine** • **Low-End Power:** Custom sub-harmonic filters track bottom keys (A0–B0) without octave errors. • **Treble Brilliance:** High-resolution FFT and parabolic interpolation guarantee sub-cent tracking on the top octave. • **Advanced Thresholds:** Customize Treble Sensitivity and Bass Inharmonicity Tolerance. **USB & External Microphone Support** • Plug-and-play detection for any class-compliant USB audio interface. • Live display of device name, sample rate, and channels. • Automatic software gain boost and multi-channel downmix. **Premium Mechanical Metronome** • Real-time physical pendulum swing animation. • High-fidelity wooden, electronic, and pitched click sounds. • Support for complex time signatures, tap-tempo, and live polyrhythms. • Build Setlists for seamless transitions during gigs or practice. **"Midnight Onyx" Interface** • Designed for dark concert halls and piano interiors. • Vibrant glassmorphic controls with responsive needle physics. • Tactile haptic feedback lets you "feel" perfect pitch. **Universal & Offline Privacy** • **Universal Purchase:** Buy once, unlock full features across Mac, iPhone, and iPad. • **100% Privacy:** No data collection, zero tracking. All DSP processing happens locally.
Screenshots
Verdict
The clearest difference is iOS requirement: Ivory Pro at 16.0 against Level Tool's 18.0. On price, update cadence, 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. Level Tool sells 9 in-app purchases, starting at $3.49 per 7 days and Ivory Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Level Tool ships an update every 3 weeks, Ivory Pro every 2 weeks. Both last shipped on November 9, 2026.
| Parameter | Level Tool | Ivory Pro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 75 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuliia Otmakhova | Lei Feng |
In-app purchases
Level Tool
- Weekly3 Days trial$3.497 Days
- Monthly3 Days trial$3.991 Month
- Yearly$24.991 Year
- Magnetic scanner$0.99
- Camera level$0.99
- AR tape measure$0.99
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- Quick Rectangle$0.99
- Camera angle$0.99
- Unlimited access forever$14.99
Ivory Pro
- Ivory Pro Unlimited Lifetime Unlock$9.99









