# Zalpha vs SPARK by SILEX

The clearest difference is ads: Zalpha at none against SPARK by SILEX's shown. SPARK by SILEX's advantage is iOS requirement (14.0 vs 17.6). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Zalpha ships an update every 2 weeks, SPARK by SILEX every 3 weeks. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Zalpha | SPARK by SILEX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 101 MB | 26 MB |
| Requires iOS | 17.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zalpha](https://appshunter.io/developer/1600492585) | [Silex](https://appshunter.io/developer/1639862599) |

## What reviewers say

### Zalpha

[App page](https://appshunter.io/ios/app/zalpha/id1601842597)

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

**In-app purchases:** none


### SPARK by SILEX

[App page](https://appshunter.io/ios/app/spark-by-silex/id6446899759)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zalpha free?

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

### Is SPARK by SILEX free?

SPARK by SILEX is free to download, with no in-app purchases.

### Do Zalpha or SPARK by SILEX have ads?

SPARK by SILEX shows ads; Zalpha does not.

### Which is updated more often, Zalpha or SPARK by SILEX?

Zalpha ships an update every 2 weeks, and SPARK by SILEX every 3 weeks. Most recently, Zalpha was updated on October 30, 2026 and SPARK by SILEX on October 27, 2026.

---

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