Comparison

J2K Browser vs Sakubura

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

Head to head
About

J2K Browser

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About

Sakubura

Features
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Watch while you browse. Read without the noise. On supported sites, use iOS Picture in Picture to keep a video visible while you browse another page. Organize the pages you want to revisit with Watch Later and lists, including supported video pages. Ads and trackers are blocked automatically, so the articles and pages you actually want load fast and light. Built on Apple's WKContentRuleList, Sakubura drops ad requests before the page is even assembled — lighter pages, less data, longer battery. Your browsing history and block stats stay on your device, not on someone else's server. Ā· Picture in Picture — keep a video visible while you browse, on supported sites. Ā· Watch Later & lists — organize the pages you want to revisit, including video pages; open them from the Home Screen widget. Ā· Ad & tracker blocking — high-precision filtering tuned for Japanese sites. Ā· Tab groups — keep work and personal separate, switch one-handed. Ā· Gesture controls — swipe to go back and forward, easy one-handed. Ā· Private mode — passcode lock for the browsing you'd rather keep private. Ā· See what's blocked — the Privacy Hub shows today's blocks at a glance; stats stay on your device. Pay once. No subscription.

Screenshots

J2K Browser2 screens
Sakubura4 screens

Verdict

The call

The clearest difference is in-app purchases: J2K Browser at none against Sakubura's 2. J2K Browser also leads on device support (4 vs 2) and iOS requirement (15.5 vs 17.0). Sakubura's advantage is update cadence (every 5 weeks vs every 143 months). On price there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Sakubura sells 2 one-off in-app purchases. J2K Browser asks for nothing beyond the download.

UpkeepUpdate frequency

J2K Browser ships an update every 143 months, Sakubura every 5 weeks. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

Scorecard4 real differences Ā· 2 level
J2K Browser versus Sakubura: the parameters behind the verdict, then further details
ParameterJ2K BrowserSakubura
PriceFreeFree
Update frequencyEvery 143 monthsEvery 5 weeks — better
Ads—No
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.5 — better17.0
Further details — not scored
Size30 MB25 MB
Age rating17+17+
Developerleesop.comTryxia

In-app purchases

None

J2K Browser

No in-app purchases

2 purchases

Sakubura

One-time2
  • 14-Day Pro TrialFree
  • Pro Lifetime$5.99

Questions

Is J2K Browser free?
J2K Browser is free to download, with no in-app purchases.
Is Sakubura free?
Sakubura is free to download, with in-app purchases available.
Which is updated more often, J2K Browser or Sakubura?
J2K Browser ships an update every 143 months, and Sakubura every 5 weeks. Most recently, J2K Browser was updated on October 26, 2026 and Sakubura on October 31, 2026.

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