YouCompose vs TATAT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
YouCompose
Create original music effortlessly with an AI assistant. This app generates unique compositions using music theory and genetic algorithms, ensuring no copyright issues. It offers a wide range of built-in instruments and flexible editing tools.
- AI-powered music composition
- Original, copyright-free music generation
- 80+ built-in instrument sounds
- Over 85 predefined ensembles
- Multiple creation methods (keyboard, MIDI, grid, score)
- Classical and jazz harmonization
- Advanced editing capabilities
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Meet Aimée, your AI assistant composer, ready to help you create amazing music effortlessly. Aimée: Originality You Can Trust. In the evolving landscape of artificial intelligence and creativity, concerns about originality and copyright are paramount. Aimée, the AI-powered assistant in YouCompose, stands out by ensuring that the music she helps you create is entirely original and free from copyright issues. Aimée Doesn't Steal! Aimée's AI isn't trained on existing musical data. Instead, she generates her own unique musical content. This innovation is achieved through the clever use of an expert system that combines music theory with advanced genetic algorithms. As a result, Aimée produces truly original compositions that are not based on or derived from existing works. At the heart of Aimée's originality is an expert system grounded in comprehensive musical theoretical data. This system provides Aimée with a deep understanding of music, enabling her to compose with creativity and precision. Whether you're crafting a symphony or a simple melody, Aimée applies her theoretical knowledge to ensure your music is harmonically rich and structurally sound. Aimée also leverages genetic algorithms, which allow her to evolve and refine musical ideas through a process akin to natural selection. By iteratively improving upon initial ideas, Aimée can explore a vast space of musical possibilities, generating compositions that are both innovative and musically coherent. This approach is crucial in addressing potential copyright infringements. By not relying on pre-existing musical data, Aimée ensures that the music you create with her assistance is genuinely yours. Why Originality Matters? In the realm of music composition, originality is not just a matter of artistic integrity but also a legal necessity. Copyright infringement can lead to significant legal challenges and financial liabilities. Aimée's ability to create original music provides peace of mind, allowing you to focus on your creative process without worrying about potential legal repercussions. Features of YouCompose and Aimée: Built-in Instruments: - 80 instrument definitions with their sounds, including all regular orchestral instruments, keyboards, organs, guitars, basses, chorus, and percussion. - Over 85 predefined ensembles for quick setup, ranging from trios to orchestras. Creating and Editing: - Create melodies using the built-in virtual keyboard, a MIDI keyboard, a grid or score editor, by importing MIDI files, or by asking Aimée to generate them. - Aimée harmonizes your melodies in classical or jazz style, considering your chosen instruments. - Edit compositions by copying, pasting, moving, and deleting movements, segments, and individual notes. - Let Aimée compose a complete symphony or add new movements based on her own or your melodies. - Control harmonization with instrumentation tools, ‘Composition instructions,’ ‘Harmonization Points,’ or leave it to Aimée. - Combine classical and jazz styles within a single piece. - Special tools for entering lyrics, applying melodic transformations, and creating dynamic effects. Sharing and Saving: - Compatible with Audiobus, AudioCopy, and Inter-App Audio for seamless audio recording and integration with other apps. - CoreMIDI compatible for use with MIDI keyboards, sound modules, or synth apps. - Export audio files in MIDI, AAC, M4A, AIFF, CAF, and WAV formats, with M4A files containing iTunes data like ‘artist,’ ‘song name,’ and ‘lyrics.’ - View, print, save or export full scores and individual parts (transposed when applicable) as PDF. - Save compositions to your device, with options to share via iCloud, email, or AirDrop. - Share compositions through email with YouCompose files, audio files, MIDI files, and PDFs of scores and parts. YouCompose also includes several sample compositions featuring well-known melodies, providing a rich starting point for your musical journey.
TATAT
Generate endless, ever-changing musical sequences and sketch new song ideas quickly. This app allows you to define moods and parameters to create unique note streams, which can then be recorded, tweaked, and played along with.
- Infinite note sequence generation
- Mood and parameter customization
- Real-time stream intervention
- MIDI data enrichment (Thru function)
- Melodic, harmonic, and percussive support
- Multiple time resolutions
- Velocity, delay, and length processing
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TATAT is a MIDI FX designed to create always-changing sequences, to quickly sketch music ideas, to add unexpected events to fixed patterns. If you’re looking for new ways of generating musical ideas, then look no further than TATAT! Set up your parameters, define a mood and listen to an endless flow of notes which you can then record, tweak, and play along to. HOW IT WORKS /// TATAT generates infinite and always changing sequences of notes. You cannot say exactly what TATAT will do, but you can suggest a path to it: by setting up its parameters you can create what we call a mood for TATAT. A mood is a configuration of notes, intervals, time fragmentation, velocity fluctuation, and other factors. Once you set a mood that you are happy with, you’ll listen to an infinite stream of events, always changing, all staying in the mood. At this point, according to your needs, you can: - Let TATAT play its stream, and make some intervention to control it: to add silence (Less), to obtain smooth accelerando and ritardando (Ratio), to control how TATAT generates intervals. You can enable Key In function to change notes on the fly. - Add some stability by controlling/automating the Liv/Mem slider, moving between the generated stream and frozen patterns. - Use TATAT to send its notes to enrich (by enabling Thru) existing/incoming MIDI data/parts. TATAT gives you excellent results both with melodic/harmonic and percussive parts! MULTIPLE TIME RES /// Set chance for each time resolution to rule the stream, and scale results with main ratio to create organic time fluctuations. NOTES /// Set chance for each notes to get triggered, enable the keys toggle to change the notes on the fly, giving a different color to the stream. DOUBLE HIT /// Set two intervals and the probability they got triggered, adding harmonic weight to the stream. LET’S PROCESS THE STREAM! /// You can process the generated notes with several parameters: add a velocity variation, a delay, set the length, randomize, and mute some notes. It’s easy and intuitive. FLOW VS PATTERN /// LIV/MEM parameter has a 0-100% range. When is set on 0%, a buffer with given length continuously records the stream; when it’s different than 0%, the buffer got locked, and you set the chance to get live or buffered notes. When you set 100% you always have the buffer content as a static pattern. You add the stability you want to the lunatic stream! 2 FLAVOURS: DARK AND LIGHT SKIN *** Please note: TATAT is an Audio Unit extension (AUv3) – it only works in an AUv3 host app compatible with MIDI FX like AUM, Logic Pro, Cubasis, etc... ***
Screenshots
Verdict
The clearest difference is rating: TATAT at 4.8 against YouCompose's 4.4. TATAT also leads on price ($6.99 vs $12.99) and review sentiment (89% vs 70%). YouCompose's advantage is update cadence (every 4 months vs every 19 months). On ratings volume, ads, in-app purchases 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
YouCompose costs $12.99 and TATAT $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TATAT holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 35 and 21 respectively. Written reviews point the same way: 70% of YouCompose's written reviews are positive against 89% of TATAT's.
YouCompose ships an update every 4 months, TATAT every 19 months. The most recent releases landed on October 22, 2026 and October 8, 2026 respectively.
| Parameter | YouCompose | TATAT |
|---|---|---|
| Price | $12.99 | $6.99 — better |
| Rating | 4.4 (35 ratings) | 4.8 (21 ratings) — better |
| Positive reviews | 70.0% of reviews | 88.9% of reviews — better |
| Number of ratings | 35 — better | 21 |
| Update frequency | Every 4 months — better | Every 19 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 10.13 — better |
| Further details — not scored | ||
| Size | 399 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Elstar | K-Devices |
Customer experience
YouCompose
TATAT
In-app purchases
YouCompose
No in-app purchases
TATAT
No in-app purchases









