Comparison

Tonality Visualizer vs ostinata

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Tonality Visualizer

Features
Read full description

Tonality Visualizer is an interactive polar-pitch map that displays musical notes on a rotating disk. You can connect a MIDI keyboard or open a MIDI file — every note appears in real time. The app helps you see harmony, motion, and chord relationships, even without formal music theory. Main Features •MIDI Input: visualize notes directly from your keyboard or MIDI device. •MIDI File Playback / Trainer Mode: play or practice chord by chord. •Live Sound Option: enable/disable the built-in synth for input playback. •Physics-based Disk Rotation: the disk moves naturally according to musical torque. •Simple UI: switch between water-fixed / disk-fixed anchors, toggle UI visibility, bilingual JP/EN. Perfect for music learners, creators, and anyone who wants to “see” sound. Privacy No data collection. All processing happens locally on your device. License Open-source under the MIT License. Source code available on GitHub. Supported Formats •.mid / .midi files (Format 0 / 1) •CoreMIDI device input

About

ostinata

Features
Read full description

ostinata lets you map the actual paths you take through music. ever gone from radiohead to aphex twin because kid a changed how you think about electronic music? from miles davis to j dilla because someone sampled a love supreme? ostinata turns those invisible threads into visual, shareable directed graphs. — how it works — create a journey by adding nodes — artists, albums, genres, emotions, or concepts. connect them with directed edges that show which discovery led to which. add reasoning text to explain the connection. the result is a map of your taste that others can explore, fork, and build on. — search & discover — search for artists and albums via musicbrainz, the open music encyclopedia. album nodes display cover art. long-press any node to open its musicbrainz page for deeper exploration. — fork & remix — see a journey that resonates? fork it. you get a copy of the entire graph — all nodes, edges, and reasoning — that you can extend, rearrange, or take in a completely different direction. — bounties — post discovery challenges for the community. set a topic like "find the link: kraftwerk to detroit techno," define seed nodes as starting points, and offer resonance as a reward. other users form guilds of five to tackle the challenge together. — your data, your cloud — everything syncs privately via icloud. we store nothing on our servers. your journeys, your data, your control. — design — black canvas. white lines. ibm plex mono. all lowercase. album art in grayscale. ostinata is built for people who care about how things look as much as how they sound. ostinata — discovery through human curation.

Screenshots

Tonality Visualizer3 screens
ostinata3 screens

Verdict

The call

Tonality Visualizer and ostinata are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Tonality Visualizer ships an update fortnightly, ostinata every 9 days. The most recent releases landed on September 20, 2026 and September 14, 2026 respectively.

ScorecardNo meaningful differences
Tonality Visualizer versus ostinata: the parameters behind the verdict, then further details
ParameterTonality Visualizerostinata
PriceFreeFree
Update frequencyFortnightlyEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.617.0 — better
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperYusuke YoshidaJoachim Groeger

In-app purchases

None

Tonality Visualizer

No in-app purchases

None

ostinata

No in-app purchases

Questions

Is Tonality Visualizer free?
Tonality Visualizer is free to download, with no in-app purchases.
Is ostinata free?
ostinata is free to download, with no in-app purchases.
Do Tonality Visualizer or ostinata have ads?
Neither Tonality Visualizer nor ostinata shows ads.
Which is updated more often, Tonality Visualizer or ostinata?
Tonality Visualizer ships an update fortnightly, and ostinata every 9 days. Most recently, Tonality Visualizer was updated on September 20, 2026 and ostinata on September 14, 2026.

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