# Spectrumizer vs Logic King

The clearest difference is in-app purchases: Spectrumizer at none against Logic King's 1. Spectrumizer also leads on ads (none vs shown) and update cadence (every 5 days vs every 10 days). Logic King's advantage is iOS requirement (15.0 vs 17.6). On price and device support there is nothing between them.

Both are free to download. Logic King sells 1 one-off in-app purchase. Spectrumizer asks for nothing beyond the download.

Spectrumizer ships an update every 5 days, Logic King every 10 days. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Spectrumizer | Logic King |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 10 days |
| Size | 3 MB | 85 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mehran Naghizadeh](https://appshunter.io/developer/1273578621) | [Netdomuz](https://appshunter.io/developer/1850784308) |

## What reviewers say

### Spectrumizer

[App page](https://appshunter.io/ios/app/spectrumizer/id6739510841)

**Features:** macOS Compatibility

**In-app purchases:** none


### Logic King

[App page](https://appshunter.io/ios/app/logic-king-math-puzzles/id6754893822)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | one-time |


## Frequently asked questions

### Is Spectrumizer free?

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

### Is Logic King free?

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

### Do Spectrumizer or Logic King have ads?

Logic King shows ads; Spectrumizer does not.

### Which is updated more often, Spectrumizer or Logic King?

Spectrumizer ships an update every 5 days, and Logic King every 10 days. Most recently, Spectrumizer was updated on November 8, 2026 and Logic King on November 9, 2026.

---

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