# Onyx vs SpamGuard

The clearest difference is in-app purchases: SpamGuard at none against Onyx's 1. SpamGuard also leads on update cadence (daily vs every 3 weeks) and iOS requirement (17.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Onyx sells 1 one-off in-app purchase. SpamGuard asks for nothing beyond the download.

Onyx ships an update every 3 weeks, SpamGuard daily. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Onyx | SpamGuard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/onyx-dark-mode/id6793454898/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 3 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Takaki Takemura](https://appshunter.io/developer/6793454900) | [seihee han](https://appshunter.io/developer/629944907) |

## What reviewers say

### Onyx

[App page](https://appshunter.io/ios/app/onyx-dark-mode/id6793454898)

This Safari extension for iOS applies a dark mode to all websites, blocks ads, and reduces blue light. It offers customizable themes and scheduling for a more comfortable browsing experience, especially at night.

**Highlights:** Force Dark Mode on all websites, 7 built-in themes plus custom colors, Built-in ad blocker, Blue light reduction filter, Scheduled Dark Mode activation, Per-site settings, iCloud settings sync

**Features:** Safari Extension

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Onyx Pro | $2.99 | one-time |


### SpamGuard

[App page](https://appshunter.io/ios/app/spamguard-sms-filter/id6807305846)

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

**In-app purchases:** none


## Frequently asked questions

### Is Onyx free?

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

### Is SpamGuard free?

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

### Do Onyx or SpamGuard have ads?

Neither Onyx nor SpamGuard shows ads.

### Which is updated more often, Onyx or SpamGuard?

Onyx ships an update every 3 weeks, and SpamGuard daily. Most recently, Onyx was updated on October 29, 2026 and SpamGuard on October 25, 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.*