# Earz Solo vs Speech Jammer

The clearest difference is in-app purchases: Speech Jammer at none against Earz Solo's 1. Speech Jammer also leads on iOS requirement (13.0 vs 15.0). Earz Solo's advantage is update cadence (every 3 weeks vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Earz Solo sells 1 in-app purchase, starting at $8.99 per year. Speech Jammer asks for nothing beyond the download.

Earz Solo ships an update every 3 weeks, Speech Jammer every 7 months. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Earz Solo | Speech Jammer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 7 months |
| Monetization | Subscription | — |
| Size | 6 MB | 19 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ger Wolthuis](https://appshunter.io/developer/979496032) | [Writecream](https://appshunter.io/developer/1633791590) |

## What reviewers say

### Earz Solo

[App page](https://appshunter.io/ios/app/earz-solo/id1038887259)

Learn music theory, note reading, and ear training with interactive lessons and gamified exercises. Explore chords, scales, harmony, and instruments at your own pace. Offers a free demo before purchase.

**Highlights:** Note reading lessons, Music theory instruction, Ear training for chords and scales, Instrument and style recognition, Gamified learning experience, Harmony and interval training

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Earz Solo Yearly | $8.99 | per year |


### Speech Jammer

[App page](https://appshunter.io/ios/app/speech-jammer-delay-effect/id6755513989)

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

**In-app purchases:** none


## Frequently asked questions

### Is Earz Solo free?

Earz Solo is free to download, with in-app purchases available.

### Is Speech Jammer free?

Speech Jammer is free to download, with no in-app purchases.

### Do Earz Solo or Speech Jammer have ads?

Neither Earz Solo nor Speech Jammer shows ads.

### Which is updated more often, Earz Solo or Speech Jammer?

Earz Solo ships an update every 3 weeks, and Speech Jammer every 7 months. Most recently, Earz Solo was updated on November 6, 2026 and Speech Jammer on November 8, 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.*