# Interval? vs Chord dice

The clearest difference is price: Chord dice at $1.99 against Interval?'s $2.99. Interval?'s advantage is iOS requirement (12.0 vs 18.6). On update cadence, ads, in-app purchases and chart position there is nothing between them.

Interval? costs $2.99 and Chord dice $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Interval? ships an update every 7 months, Chord dice every 12 months. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Interval? | Chord dice |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 12 months |
| Monetization | Paid | — |
| Best chart rank | **#107** | #133 |
| Size | 18 MB | 15 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kelly Technology Inc.](https://appshunter.io/developer/393931941) | [Daniel Furrer](https://appshunter.io/developer/1241932900) |

## What reviewers say

### Interval?

[App page](https://appshunter.io/ios/app/interval/id936872179)

**Currently charting:** #107 Top Paid · Music (US App Store)

Test your ear for music by identifying chords. Play through puzzles where you'll hear three chords and see the notation for the first two. Select the correct third chord from four options to score points and improve your musical knowledge.

**Highlights:** Chord identification gameplay, Musical notation display, Multiple choice answers, Scoring system with deductions, Unlimited chord replays, Progressive difficulty

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Chord dice

[App page](https://appshunter.io/ios/app/chord-dice/id1441835354)

**Currently charting:** #133 Top Paid · Music (US App Store)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Interval? free?

Interval? costs $2.99, with no in-app purchases.

### Is Chord dice free?

Chord dice costs $1.99, with no in-app purchases.

### Do Interval? or Chord dice have ads?

Neither Interval? nor Chord dice shows ads.

### Which is updated more often, Interval? or Chord dice?

Interval? ships an update every 7 months, and Chord dice every 12 months. Most recently, Interval? was updated on October 6, 2026 and Chord dice on October 4, 2026.

### Which is more popular, Interval? or Chord dice?

Interval? currently peaks at #107 in the App Store charts, and Chord dice at #133. Chart position reflects recent download velocity rather than total install base.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*