# Zulu vs Synaptic Study

The clearest difference is ads: Synaptic Study at none against Zulu's shown. Synaptic Study also leads on update cadence (weekly vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Zulu sells 3 in-app purchases, starting at $5.99 per month and Synaptic Study sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Zulu ships an update monthly, Synaptic Study weekly. The most recent releases landed on October 28, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Zulu | Synaptic Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Weekly** |
| Size | 223 MB | 82 MB |
| Requires iOS | **15.5** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Nguyen Thi Ngoc Hang](https://appshunter.io/developer/1529553581) | [Brainwave Solutions Inc.](https://appshunter.io/developer/1879982178) |

## What reviewers say

### Zulu

[App page](https://appshunter.io/ios/app/zulu-listening-speaking/id6743122079)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthy Upgrade | $5.99 | per month |
| Premium Yearly Upgrade | $29.99 | per year |
| Premium Lifetime Upgrade | $99.99 | one-time |


### Synaptic Study

[App page](https://appshunter.io/ios/app/synaptic-study/id6759636402)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Synaptic Premium Monthly | $9.99 | per month |
| Synaptic Premium 3 Month | $26.99 | per 3 months |
| Synaptic Premium 6 Month | $47.99 | per 6 months |
| Synaptic Premium Student | $83.99 | per year |
| Synaptic Premium Yearly | $95.99 | per year |


## Frequently asked questions

### Is Zulu free?

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

### Is Synaptic Study free?

Synaptic Study is free to download, with in-app purchases available.

### Do Zulu or Synaptic Study have ads?

Zulu shows ads; Synaptic Study does not.

### Which is updated more often, Zulu or Synaptic Study?

Zulu ships an update monthly, and Synaptic Study weekly. Most recently, Zulu was updated on October 28, 2026 and Synaptic Study 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.*