Comparison

Samurai Search vs Karui Notifications

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

Head to head
About

Samurai Search

Efficiently search text and PDF files across your device, iCloud, and external storage. Preview matched files or open them in other applications. Supports advanced search options like regular expressions.

Highlights
  • Search text and PDF files
  • iCloud and external storage support
  • File preview
  • Regular expression support
  • Customizable file types
  • Saved search locations
Read full description

Search your iOS device or iCloud for text, source code, plain text files, and PDFs. Find matches inside files and preview results instantly, or open any matched file in your favourite editing or viewing app. Flexible search options: whole word, case sensitive (all file types), and regular expressions (for text files). Choose which files to include by selecting standard or custom text file types, or by searching filenames that match a pattern. Select where to search from On My iPad, iCloud Drive, or external file providers such as SMB and USB folders. When possible, the app retains saved search selections so you can quickly repeat the same searches later. If you search selected folders in iCloud Drive, matching iCloud files are synced to your device before searching, ensuring fast local results. Searching plain text files is extremely fast and memory efficient. PDF search speed depends on the document content and can be slow. Note also that PDF search may consume large amounts of memory which can cause Samurai Search to crash.

About

Karui Notifications

This app provides a unified notification history for all your applications, allowing you to view deleted messages and filter out spam. It offers VIP contact prioritization, emergency alarms, and auto-replies for specific situations. The app processes notifications privately on your device, ensuring your data remains secure.

Highlights
  • View unsent messages
  • Unified notification history
  • VIP contact prioritization
  • Emergency alarm feature
  • Spam and promotion filtering
  • Auto-reply functionality
  • Notification translation
Read full description

Karui sorts every notification the moment it arrives. Spam stays silent; friends and one-time codes get through. You can even read unsent messages. And emergencies wake you up, even on silent. Already keep notifications off? You might be missing a friend changing plans or an important delivery. Turn them back on: Karui lets those through and keeps promos from the same apps silent. Already using Focus modes? Karui builds on top of Focus. It judges each message, not just the app it came from, lets your VIPs through from any app, not just Apple’s, and adds what Focus can’t do: • Wake Me: people you choose can ring an alarm in an emergency, even when your iPhone is silenced. It depends on the Karui Shortcut running, so don’t rely on it alone. • Auto Reply tells your VIPs you’re driving, in a meeting, or asleep, and that you’ll reply later. • Deadline reminders: when a message asks for something by a certain day, Karui reminds you the day before. • Several quick messages from one person arrive as one notification. • Notifications translated into your language. • Every app’s notifications in one searchable history. On your Mac too Karui for Mac, free at karui.jp/mac, improves filtering, clears alerts on your iPhone that you’ve already dealt with on your Mac, and keeps your iPhone quiet while you’re using your Mac. Setup Add the Karui Shortcut from a link. It takes about a minute and is all you need to read unsent messages. To filter spam, you also choose a Focus that keeps your other apps quiet. Karui guides you through both. Spam filtering and deadline reminders need Apple Intelligence; unsent messages work without it. Privacy Karui runs on your iPhone with Apple’s on-device model, so your notifications stay on your device. Second Opinion, which setup offers, sends a notification’s text to Apple’s Private Cloud Compute when the on-device model can’t sort it. No server, no account, zero analytics.

Screenshots

Samurai Search4 screens
Karui Notifications3 screens

Verdict

The call

The clearest difference is update cadence: Karui Notifications at daily against Samurai Search's every 5 days. Samurai Search's advantage is ratings volume (25 vs 4) and iOS requirement (16.0 vs 27.0). On price, rating, review sentiment and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Samurai Search against 5.0 for Karui Notifications. That said, the two scores are not equally well evidenced: Samurai Search has 25 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Samurai Search ships an update every 5 days, Karui Notifications daily. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Samurai Search versus Karui Notifications: the parameters behind the verdict, then further details
ParameterSamurai SearchKarui Notifications
PriceFreeFree
Rating5.0 (25 ratings)5.0 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings25 — better4
Update frequencyEvery 5 daysDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better27.0
Further details — not scored
Size2 MB17 MB
Age rating4+4+
DeveloperMichael RourkeJustin Henry Garcia

Customer experience

Samurai Search

All ratings25 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Karui Notifications

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Samurai Search

No in-app purchases

None

Karui Notifications

No in-app purchases

Questions

Is Samurai Search free?
Samurai Search is free to download, with no in-app purchases.
Is Karui Notifications free?
Karui Notifications is free to download, with no in-app purchases.
Which has better reviews, Samurai Search or Karui Notifications?
Samurai Search and Karui Notifications are both rated 5.0 out of 5 on the App Store, from 25 and 4 ratings respectively.
Do Samurai Search or Karui Notifications have ads?
Neither Samurai Search nor Karui Notifications shows ads.
Which is updated more often, Samurai Search or Karui Notifications?
Samurai Search ships an update every 5 days, and Karui Notifications daily. Most recently, Samurai Search was updated on October 24, 2026 and Karui Notifications on October 24, 2026.

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