# ISO-1 — What your music says to you

> What your music says to you (iPhone/iPad app by Isofi Limited.)

- Source: https://appshunter.io/ios/app/iso-1/id6746943723 (this page in markdown: same URL + `.md`)
- Developer: [Isofi Limited](https://appshunter.io/developer/1818992497)
- Category: Health & Fitness, Entertainment
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.1 · 255 MB
- Released: 2026-03-06
- Data updated: 2026-10-01

## What is ISO?

WHAT YOUR MUSIC SAYS ABOUT YOU

ISO-1 is a music-first app that helps you understand the patterns in how you listen.

The way you use music when you are overwhelmed, distracted, calm, in your feelings, or trying to focus is not random. ISO-1 helps you see those patterns more clearly, so you can understand what certain tracks, playlists, and listening habits are doing for you over time.

WHAT YOU CAN DO WITH ISO-1

- Connect your music streaming service. Spotify is currently supported, with Apple Music coming soon.
- See patterns in how your listening connects to mood, moments, and habits.
- Build playlists using music that already works for different emotional states and goals.
- Track how certain tracks or listening sessions feel, and build a personal picture over time.
- Unlock deeper insights and more structured guidance if you want the full picture.

INSIGHT FIRST, PRESSURE LAST

ISO-1 is designed to fit around the way people already use music.

You do not need to journal constantly or change how you listen overnight. You can start by simply noticing what is already there, then go deeper when it feels useful.

BUILT WITH CARE

ISO-1 is informed by music psychology, therapeutic listening approaches, and clinical input.

It is designed to support reflection and self-understanding through music, not to replace therapy or medical care. Support resources are available if you need them.

FREE TO START

ISO-1 includes a free experience, with additional paid features for users who want deeper insight, richer pattern tracking, and more structure.

Listen how you already listen.
See more of what it means.
Unlock more when you want to go deeper.

Terms of Service:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Monthly Subscription | $3.99 | per month |
| Premium Yearly Subscription | $34.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock 'Listening History Upload' | $12.99 | one-time |


## Is ISO safe?

Not enough ratings yet to assess ISO.

## Is ISO legit?

ISO-1 has limited verification signals. The AppsHunter Legitimacy Score for ISO is 48 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.0.8 — 2026-06-10

Minor bux fixes

### 1.0.7 — 2026-05-18

- Enhancements to the Listening Session Journaling.
- Minor bug fixes.

### 1.0.6 — 2026-05-10

- Track Details screen now displays your written journal entries.
- Minor UI enhancements.
- Minor bug fixes.

### 1.0.5 — 2026-04-23

Minor UI enhancements

### 1.0.4 — 2026-04-22

Minor bug fix to Journal screen

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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 2026-10-01.*