# Interval? vs ArcEmu

The clearest difference is update cadence: ArcEmu at every 2 weeks against Interval?'s every 7 months. ArcEmu also leads on device support (5 vs 3) and price ($1.99 vs $2.99). Interval?'s advantage is chart position (#117 vs unranked) and iOS requirement (12.0 vs 15.5). On ads and in-app purchases there is nothing between them.

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

Interval? ships an update every 7 months, ArcEmu every 2 weeks. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Interval? | ArcEmu |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | — | **[4.9 (1.3K ratings)](https://appshunter.io/ios/app/arcemu/id6496282733/reviews)** |
| Number of ratings | — | **1.3K** |
| Positive reviews | — | 94.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | Paid | **Free** |
| Best chart rank | **#117** | — |
| Size | 18 MB | 172 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple TV, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Kelly Technology Inc.](https://appshunter.io/developer/393931941) | [Raffaele D'Amato](https://appshunter.io/developer/529947655) |

## What reviewers say

### Interval?

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

**Currently charting:** #117 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


### ArcEmu

[App page](https://appshunter.io/ios/app/arcemu/id6496282733)

Experience retro gaming on your Apple Watch, iPhone, and iPad. This emulator supports Game Boy, Game Boy Color, and Game Boy Advance cartridges. Enjoy features like multiplayer, cheats, and customizable controls.

**Highlights:** Game Boy, GBC, GBA emulation, Multiplayer support, Cheat codes, Customizable on-screen controls, Save State sharing, iCloud support

**Features:** macOS Compatibility, Game Controller support, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Fully functional
- 🚀 Impressive emulation on Apple Watch
- 👍 Great emulator for both phone and watch
- 👍 Seamless save state transfer between devices
- 👍 Customizable controls and layout

**What reviewers complain about**

- 🐛 Compatibility issues with some games
- 🐛 Audio quality problems on certain games
- 👎 Limited functionality on Apple Watch
- 👎 Difficult controls for action-heavy games on watch

**Reported bugs**

- Occasional crashes
- Graphical glitches with certain ROMs
- Save data not transferring properly between devices

**Requested features**

- Add cheat/GameShark support
- Improve volume controls
- Implement fast forward/slow motion options
- Allow multiple save slots per game
- Improve Game Boy Color support


## Frequently asked questions

### Is Interval? free?

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

### Is ArcEmu free?

ArcEmu costs $1.99, with no in-app purchases.

### Do Interval? or ArcEmu have ads?

Neither Interval? nor ArcEmu shows ads.

### Which is updated more often, Interval? or ArcEmu?

Interval? ships an update every 7 months, and ArcEmu every 2 weeks. Most recently, Interval? was updated on October 6, 2026 and ArcEmu on October 15, 2026.

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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.*