# OTOFLOW: Chord Practice — See it. Hear it. Play it.

> See it. Hear it. Play it. (iPhone/iPad app by Slymoon.)

- Source: https://appshunter.io/ios/app/otoflow-chord-practice/id6817735915 (this page in markdown: same URL + `.md`)
- Developer: [Slymoon](https://appshunter.io/developer/1883461596)
- Category: Education, Music
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 15.0 · 6 MB
- Languages: American English
- Released: 2026-10-14
- Data updated: 2026-10-23

## What is OTOFLOW?

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. 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.

Terms of Use (Apple Standard EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| OTOFLOW PRO | $1.99 | per month |


## Is OTOFLOW safe?

Not enough ratings yet to assess OTOFLOW.

## Is OTOFLOW legit?

OTOFLOW: Chord Practice has limited verification signals. The AppsHunter Legitimacy Score for OTOFLOW is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-14

No release notes.

## More apps by Slymoon

- [令和就活 - トーク履歴から自己分析・面接対策](https://appshunter.io/ios/app/id6760248804)
- [SynthLab](https://appshunter.io/ios/app/synthlab/id6823710868)

All apps by Slymoon: https://appshunter.io/developer/1883461596

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-23.*