OTOFLOW: Chord Practice

Name: OTOFLOW: Chord Practice
Author: ReiwaApp

LiveReiwaApp2 apps · 2 installsEducationFree · contains adsIn-app purchases: $1.89 per itemnet.slymoon.otoflow

Build chord fluency with flash drills, MIDI input and focused review.

Alert me ★ Watch Open in Play ↗

Total installs: 0
Installs / day: —
Rating: —★
Released: 10 Oct 2026
Last update: 10 Oct 2026
Countries: —

Installs per day

gain of the exact counter

Daily tracking since 13 Oct 2026 · history grows every day

Install history

exact counter from Google Play

Daily tracking since 13 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Data safety

declared by the developer on Google Play

Shares data with third parties Location, App activity and 2 others
Collects data Location, Personal info and 4 others
Data is encrypted in transit

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

7 in 2 groups

1 Sensitive3 Notable3 Routine

What this app can do with your phone

Know your exact location using GPS, Wi-Fi and mobile networks

LocationSensitive1

Access to where your device is, using GPS or network signals

Know your exact location using GPS, Wi-Fi and mobile networksprecise location (GPS and network-based) · ACCESS_FINE_LOCATION

OtherNotable6

Access to miscellaneous device features that don't fit other categories

See Bluetooth settings and connect to paired devices like headphones, speakers or watchespair with Bluetooth devices · BLUETOOTH
Turn Bluetooth on or off and find and pair with nearby Bluetooth devicesaccess Bluetooth settings · BLUETOOTH_ADMIN
Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
Connect to the internet to load content and send datafull network access · INTERNET
Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Download

Full description

Practice recognizing, hearing and playing chords with OTOFLOW, for ages 13 and above. Use flash drills, note and interval exercises, 5-, 10- or 25-question sets, mistake review and progress records. Explore 288 chords across 12 roots and 24 types. Check notes and theory, then practice the selected chord. Play the screen keyboard or use a compatible MIDI instrument. Hardware and adapters are not included. Assessment does not use microphone recording. Five basic questions are available without a daily limit. Free full sets: one per day for adults; three per day for ages 13–17. Adults on Free may choose a rewarded video for one extra set. No ads for ages 13–17 or PRO. PRO is a monthly auto-renewing subscription with unlimited sets. Review the store-displayed price and period before purchase. Manage cancellation and restore through the purchasing store. No app account is required. Learning stays on your device and can be exported as JSON. No cloud sync or cross-platform subscription sharing. Advertising and purchases require connectivity; offline paid access is limited. UI and chord theory are available in Japanese, English, German, French, Korean, Brazilian Portuguese, Spanish and Hindi. Fingering candidates do not guarantee physical playability. Learning outcomes vary.

What's new

First release of OTOFLOW with chord practice, a chord dictionary, review, and learning progress. Includes MIDI connection status, live key sound, and held-note feedback.

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