Sostenutoo vs Microtonal Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sostenutoo
This app centralizes all your orchestra's organizational needs, from rehearsals and sheet music to attendance tracking and event management. It provides a clear, secure space for musicians and conductors to manage multiple ensembles and prepare for performances.
- Centralized event management
- Organized sheet music library
- Attendance tracking
- Musical program details
- Multi-ensemble support
- Secure data and privacy
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Tired of lost emails, missing sheet music, and information scattered everywhere except where it should be? Sostenutoo finally brings your orchestra’s entire organization together in one single app, simple, clear, and designed for musicians. Your entire orchestra, perfectly organized Find all your rehearsals, concerts, and events at a glance. The next one coming up? A countdown reminds you. And with one click, you can add everything to your calendar. Your music, always with you No more digging through emails or folders. Your sheet music is automatically organized by program and by instrument: you only see what concerns you, and you can view or share it instantly. Clear and inspiring musical programs Explore your orchestra’s repertoire and see what will be worked on at each rehearsal. Composer, duration, level, audio references… everything is there to help you prepare in the best possible way. Attendance made simple Something unexpected? Indicate your absence or lateness in just a few seconds. Your conductor immediately knows who will be there, everyone saves time. One account, multiple ensembles Wind band, symphony orchestra, big band, choir… easily switch from one ensemble to another. Each orchestra has its own dedicated, clear, and secure space. Security first Your sheet music and data stay between you and your ensemble. Secure login and full respect for your privacy. Designed by a conductor, for musicians Sostenutoo was born from a real need: organizing an orchestra should be simple. This app finally brings together everything a musician is looking for… and everything a conductor expects. Ready to join the ensembles that have already transformed their organization? Download Sostenutoo and focus on what really matters: making music. Questions? → support@sostenutoo.com SUBSCRIPTIONS Sostenutoo Premium Monthly: €13.90 / month Sostenutoo Premium Yearly: €122.99 / year 30-day free trial Automatically renews Cancel anytime Privacy Policy: https://sostenutoo.com/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Microtonal Lab
Explore music beyond the traditional 12-note scale with this comprehensive microtonal studio. Create custom scales, play a microtonal keyboard, sequence patterns, and perform live with a launchpad. Export your creations as MIDI files for further production.
- Harmonic Galaxy visualizer
- Microtonal keyboard with custom scales
- 32-step sequencer with FX
- Launchpad for live performance
- Extensive world scale library
- Multiple tuning systems support
- MIDI export for DAWs
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Microtonal Lab is a complete microtonal music studio for iOS. Break free from the 12-note octave and explore the infinite space between the notes. AUv3 PLUGIN Use MicrotonalLab as a plugin inside GarageBand, AUM, Cubasis, Drambo, and any AUv3-compatible host. The full step sequencer, tuning system, and SF2 instruments are available directly in your DAW. Record sequences as MIDI regions with automatic tempo sync. HARMONIC GALAXY Discover musical intervals as a visual universe. Every dot is an interval above the root — its size shows consonance, its color shows its position in the octave, and its number shows the exact distance in cents. Pinch to zoom and new microtones emerge from the depths. Build custom scales by tapping intervals and save them to your library. MICROTONAL KEYBOARD A fully playable keyboard with exact microtonal tuning. Choose from piano, strings, marimba, vibes, bass, pad, flute, or synthesized waveforms. Activate any scale from the library and the keyboard reconfigures to show precisely those notes. Supports glide between notes for expressive playing. STEP SEQUENCER A 16-step sequencer with microtonal note assignment per step, velocity, gate, and swing control. Syncs to the host tempo in AUv3 mode. LAUNCHPAD A grid-based launchpad for live performance. Rows correspond to scale degrees, columns to time — tap to toggle notes and play your patterns in real time. SCALE LIBRARY Browse world scales from dozens of musical traditions, including Arabic maqam, Indian ragas, Persian dastgah, Javanese gamelan, and many more. Preview any scale, then activate it across all views with one tap. TUNING SYSTEMS Switch between 12-TET, 19-TET, 24-TET, 31-TET, and 53-TET. Full access to all scale degrees in the sequencer for every tuning system. MIDI EXPORT Export your sequences to standard MIDI files with full microtonal pitch bend on each channel. Import directly into any DAW for further production. FX Filter (low-pass with cutoff and resonance), reverb (from small room to cathedral), and delay — all controllable via XY pads in real time during playback. Microtonal Lab is built for composers, sound designers, music theorists, and anyone curious about the music that lives between the keys.
Screenshots
Verdict
The clearest difference is price: Sostenutoo at Free against Microtonal Lab's $6.99. Sostenutoo also leads on rating (5.0 vs 1.0) and update cadence (every 3 days vs every 2 months). Microtonal Lab's advantage is in-app purchases (none vs 2). On ratings volume, ads 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
Sostenutoo is free to download; Microtonal Lab costs $6.99 up front. Sostenutoo sells 2 in-app purchases, starting at $14.99 per month. Microtonal Lab asks for nothing beyond the download.
Sostenutoo holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Sostenutoo ships an update every 3 days, Microtonal Lab every 2 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | Sostenutoo | Microtonal Lab |
|---|---|---|
| Price | Free — better | $6.99 |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 26 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | Sostenutoo | Martin Adler |
Customer experience
Sostenutoo
Microtonal Lab
In-app purchases
Sostenutoo
- Sostenutoo Monthly Subscription$14.991 Month
- Sostenutoo Annual Subscription$149.991 Year
Microtonal Lab
No in-app purchases









