Comparison

Purus vs Sub Security

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

Head to head
About

Purus

This browser prioritizes privacy and safety by filtering explicit content, ads, and trackers directly on your device. It offers multiple layers of protection without collecting user data, and an optional AI feature for real-time image scanning.

Highlights
  • On-device content filtering
  • Eight independent protection layers
  • No data collection or logging
  • Built-in ad and tracker blocking
  • Real-time image scanning (optional AI)
  • Network-level DNS filtering
Features
Read full description

Purus is the browser built to keep the web clean — entirely on your device. One-time setup. No account. No servers collecting your data. Just open it and browse. Accountability without surveillance. Explicit content, ads, trackers, and unsafe searches get filtered automatically — layer after layer, on every single request, with nothing logged, reported, or sent to anyone. Eight independent layers of protection work together: domain blocking, encrypted DNS filtering, keyword detection, built-in ad and tracker blocking, safe search enforcement, and more. Protection that doesn't stop at this app. Purus's DNS filtering works at the network level — so explicit domains stay blocked even if you or your kids open a different browser. It's the one layer that holds no matter where you're browsing from. Why Purus is different Real ad and tracker blocking, built in. Not a side feature — Purus blocks ads and trackers on every site you visit, the same way a dedicated ad-blocker extension would, except it's already running the moment you open the app. Eight independent filtering layers working together — not just one basic blocklist doing all the work. No servers of our own — we don't collect, see, or store what you search or browse. No account and no subscription required to use the core browser — download it and it just works. TikTok, Snapchat, Instagram, X, Pinterest, and Tumblr are blocked entirely. Search filtering is enforced on YouTube, Facebook, and Reddit. Safe Search is enforced across Google, DuckDuckGo, Bing, Yahoo, and more. YouTube Restricted Mode is enabled automatically — zero setup required. A real browser underneath it all — clean interface, tabs, bookmarks, downloads, everything you'd expect, minus the mess. PurusAI: go beyond blocklists (optional) Blocklists can only catch what's already been reported — they can't see what's actually on a page. PurusAI adds real-time, on-device image scanning that looks at the content itself as you browse, and automatically blurs explicit images the moment they'd otherwise load — on any site, not just the ones on a curated list. It runs entirely on your device. No image, page, or result is ever sent anywhere — the same privacy commitment as the rest of Purus, extended to the newest layer of protection. PurusAI is available as an optional subscription; everything above is fully functional for free. Built for Individuals working toward freedom from pornography who want a real, private line of defense — accountability without a partner reading reports or a dashboard someone else checks, just protection that works quietly, on your terms. Parents who want to reduce what reaches their kids' devices without turning their phone into a surveillance tool — pair Purus with iOS Screen Time restrictions for full effect. Faith communities looking for a browser aligned with their values. Anyone who wants the internet to feel a little safer (and a lot faster) by default. Purus isn't trying to be everything. It's a focused, native iOS browser that filters explicit content, ads, and unsafe searches automatically — so you don't have to think about it every time you open it. No filter is perfect, and Purus doesn't claim to catch everything. What it does do: stack eight layers of protection — nine with PurusAI — so the vast majority of explicit content, intrusive ads, and unsafe searches never reach you in the first place. https://www.purusai.com/terms https://www.purusai.com/privacy

About

Sub Security

Features
Read full description

Sub Security is your all-in-one privacy companion for iPhone. Stay safer online, reduce distractions, and keep personal content out of sight — all from a clear security dashboard. VPN — browse privately Connect through an encrypted tunnel for safer browsing on public Wi‑Fi and everyday networks. Switch servers and keep your connection protected wherever you go. Ad Block — cleaner browsing Cut down on ads, pop-ups, and tracking noise for a faster, less cluttered experience across Safari. Private Browser — leave no trail Search and browse without saving history, cookies, or trackers. Open a clean session whenever you want more privacy. Photo Vault — lock what matters Store private photos and videos behind a passcode so they stay hidden from prying eyes. Study Room — learn to stay safe Read short cybersecurity tips on passwords, phishing, public Wi‑Fi, and everyday privacy habits. Security score at a glance See your protection level on the home screen and turn features on as you need them. Build stronger habits with simple tools designed for daily use. Whether you’re on café Wi‑Fi, clearing clutter from the web, or locking personal photos, Sub Security helps you take control of your privacy in a few taps. Download Sub Security and start protecting your digital life today. Privacy Policy and Terms Of Use https://docs.google.com/document/d/1kCYE-wQEp2A4fmqUhfjVH2_JVXT42fQ2JWQaW7EBi1U/edit?usp=sharing

Screenshots

Purus4 screens
Sub Security4 screens

Verdict

The call

The clearest difference is iOS requirement: Purus at 16.0 against Sub Security's 18.0. On price, ads, in-app purchases 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. Purus sells 2 in-app purchases, starting at $4.99 per month and Sub Security sells 2 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 8 level
Purus versus Sub Security: the parameters behind the verdict, then further details
ParameterPurusSub Security
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone
Requires iOS16.0 — better18.0
Further details — not scored
Size27 MB9 MB
Age rating17+17+
DeveloperNicholas SoterSONATA COMMERCE LP

In-app purchases

2 purchases

Purus

Subscriptions2
  • PurusAI Monthly$4.991 Month
  • PurusAI Yearly$49.991 Year
2 purchases

Sub Security

Subscriptions2
  • Sub Security Subscription Week$5.997 Days
  • Sub Security Subscription Year$59.991 Year

Questions

Is Purus free?
Purus is free to download, with in-app purchases available.
Is Sub Security free?
Sub Security is free to download, with in-app purchases available.
Do Purus or Sub Security have ads?
Neither Purus nor Sub Security shows ads.

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