Comparison

Spectraless vs Onyx

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Spectraless

Features
Read full description

Spectraless is a Safari extension for removing the Spectral font from Substack newsletters in order to improve their readability. It works on newsletters that use the substack.com domain as well as those using custom domains.

About

Onyx

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
Read full description

Onyx is a Safari extension for iOS that brings Dark Mode to every website while blocking ads, reducing blue light, and automatically enabling on your schedule. Features • Force Dark Mode on all websites • 7 built-in themes plus custom color creation • Built-in ad blocker for faster, cleaner browsing • Blue light reduction filter • Schedule mode: Automatically enables Dark Mode at the times you set • Per-site settings: Always On, Always Off, or Default • Sync your settings across devices with iCloud Comfortable Browsing at Night Reduce eye strain from nighttime screen use. Set your preferred hours and Onyx automatically turns on Dark Mode for a more comfortable browsing experience. How to Use 1. Install the app. 2. Go to Settings → Safari → Extensions and enable Onyx. 3. Tap the Onyx icon in Safari's toolbar to customize your settings.

Screenshots

Spectraless2 screens
Onyx4 screens

Verdict

The call

The clearest difference is in-app purchases: Spectraless at none against Onyx's 1. Spectraless also leads on iOS requirement (18.5 vs 26.2). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

Scorecard2 real differences · 8 level
Spectraless versus Onyx: the parameters behind the verdict, then further details
ParameterSpectralessOnyx
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequency—Every 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.5 — better26.2
Further details — not scored
Size0 MB12 MB
Age rating4+17+
DeveloperJeremy KanterTakaki Takemura

In-app purchases

None

Spectraless

No in-app purchases

1 purchases

Onyx

One-time1
  • Onyx Pro$2.99

Questions

Is Spectraless free?
Spectraless is free to download, with no in-app purchases.
Is Onyx free?
Onyx is free to download, with in-app purchases available.
Do Spectraless or Onyx have ads?
Neither Spectraless nor Onyx shows ads.

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