# Interval Sight singing Lite vs Music Theory 101

The clearest difference is update cadence: Music Theory 101 at every 5 days against Interval Sight singing Lite's every 12 months. Music Theory 101 also leads on ratings volume (71 vs 2). Interval Sight singing Lite's advantage is review sentiment (100% vs 83%) and rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Interval Sight singing Lite holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Music Theory 101 has 71 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Interval Sight singing Lite's written reviews are positive against 83% of Music Theory 101's.

Interval Sight singing Lite ships an update every 12 months, Music Theory 101 every 5 days. The most recent releases landed on October 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Interval Sight singing Lite | Music Theory 101 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/interval-sight-singing-lite/id1347186534/reviews)** | [4.8 (71 ratings)](https://appshunter.io/ios/app/music-theory-101-study-course/id1629995579/reviews) |
| Number of ratings | 2 | **71** |
| Positive reviews | **100.0% of reviews** | 82.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 19 MB | 78 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jun-sig Kim](https://appshunter.io/developer/1344663773) | [Poesie Inc](https://appshunter.io/developer/1505664474) |

## What reviewers say

### Interval Sight singing Lite

[App page](https://appshunter.io/ios/app/interval-sight-singing-lite/id1347186534)

Practice sight singing with customizable exercises. Select key signatures, intervals, melody length, and more to generate unique practice pieces. Compare your performance with playback options and track your progress.

**Highlights:** Customizable practice exercises, Select key signature, intervals, direction, melody length, range, Generate unique practice pieces, Play composed pieces for comparison, Track practice count, Reset practice counter

**Features:** macOS Compatibility

**In-app purchases:** none


### Music Theory 101

[App page](https://appshunter.io/ios/app/music-theory-101-study-course/id1629995579)

An interactive music theory training app covering classical fundamentals. It features 19 units with audio, exercises, and definitions, mirroring AP Music Theory exam curriculum. Practice skills with over 90 exercise types.

**Highlights:** Interactive music theory course, 19 comprehensive units, Audio samples and key definitions, Skill practice exercises, AP Music Theory exam curriculum, Over 90 exercise types, Aural recognition and dictation

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Sight singing Lite free?

Interval Sight singing Lite is free to download, with no in-app purchases.

### Is Music Theory 101 free?

Music Theory 101 is free to download, with no in-app purchases.

### Which has better reviews, Interval Sight singing Lite or Music Theory 101?

Interval Sight singing Lite is rated higher. Interval Sight singing Lite averages 5.0 out of 5 from 2 ratings, while Music Theory 101 averages 4.8 from 71 ratings.

### Do Interval Sight singing Lite or Music Theory 101 have ads?

Neither Interval Sight singing Lite nor Music Theory 101 shows ads.

### Which is updated more often, Interval Sight singing Lite or Music Theory 101?

Interval Sight singing Lite ships an update every 12 months, and Music Theory 101 every 5 days. Most recently, Interval Sight singing Lite was updated on October 3, 2026 and Music Theory 101 on October 30, 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.*