Comparison

Lumen vs Klippy

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

Head to head
About

Lumen

This app acts as a browser that remembers what you read, building a personal knowledge base from engaged pages. It allows you to ask questions in plain English about your reading history, with answers generated by an on-device AI. All your data remains private and offline.

Highlights
  • On-device AI knowledge base
  • Plain English questioning
  • Automatic content organization
  • Private and offline browsing
  • Tracker blocking
  • Source citation for answers
Read full description

Lumen is a browser with a memory. Most browsers forget the second you close a tab. Lumen does not. As you read, it quietly builds a personal knowledge base from the pages you actually engage with, and then lets you ask questions about any of it in plain English, answered by an AI model that runs entirely on your device. Nothing you read, nothing you ask, and nothing Lumen learns about you ever leaves your phone. WHAT IT DOES Lumen reads along with you. It distinguishes between pages you genuinely read and pages you opened and swiped away, and it extracts the meaningful content from the ones that stuck. That content gets summarized, embedded, and organized into a searchable knowledge base, all on-device. Later, when you want to find something, you do not have to dig through history or remember which tab it was in. You just ask: "What did I read about sourdough starters last week?" "Summarize that article about the new M-series chips." "What were the main arguments in that piece I read on Tuesday?" Every answer cites the pages it came from, so you can jump straight back to the source. AUTO-ORGANIZED Your reading sorts itself into a clean hierarchy: Topics, Websites, and Pages. Each level carries its own AI-generated summary, so you can scan what you have been learning at a glance. No tagging, no folders to maintain. Lumen handles it in the background. PRIVATE BY DEFAULT Lumen has no server. There is quite literally nothing to send. On-device LLM: a quantized Llama 3.2 model runs locally through Apple's MLX framework. Local SQLite storage: your reading history, summaries, and embeddings never leave the device. Built-in privacy: tracker blocking, third-party cookie blocking, and fingerprint resistance. Secure: HTTPS-only by default, with mixed-content blocking. No strings attached: no accounts, no sync, no telemetry, no ads. The AI weights download once on first launch (~700 MB). After that, everything works fully offline: browsing, reading, asking, answering. BUILT FOR iOS Lumen is written from scratch in Swift and SwiftUI, designed specifically for iPhone and iPad. It uses Apple's own frameworks wherever it can: NLEmbedding for semantic search, WKWebView for browsing, SQLite with FTS5 for full-text queries, and MLX Swift for on-device inference. Zero third-party trackers. Zero external services. WHO IT'S FOR While most browsers treat the web as a feed to scroll past, Lumen treats it as a library worth keeping. If you read a lot online and constantly think "I know I saw something about this recently but I cannot find it again," Lumen is for you. Researchers, students, writers, developers, and lifelong learners. You do not need to change how you browse. Browse normally, and Lumen takes care of the rest. REQUIREMENTS iOS 18 or later. iPhone with Apple Silicon recommended for the fastest on-device AI performance.

About

Klippy

This app saves, organizes, and syncs your copied text, links, and images across Apple devices. It features a custom keyboard for easy pasting and allows you to pin important items for quick access.

Highlights
  • Save text, links, and images
  • Pin important clips
  • iCloud sync across Apple devices
  • Custom keyboard for pasting
  • Filter clips by type
  • Image clip preview
Features
Read full description

Klippy is a clean clipboard manager for saving, finding, and reusing the things you copy most. Save text, links, and images, pin important clips, and keep everything available across iPhone, iPad, and Mac with iCloud sync. On iPhone and iPad, Klippy also includes a custom keyboard so you can paste saved clips without leaving the app you are typing in. Features: - Save copied text, links, and images - Preview image clips before pasting - Pin important items - Filter by all clips, pinned clips, links, and images - Sync privately with iCloud across your Apple devices - Use the Klippy keyboard to paste saved clips in other apps - No account required Klippy is built for quick everyday reuse: snippets, URLs, screenshots, notes, replies, prompts, and anything else you do not want to hunt for again.

Screenshots

Lumen4 screens
Klippy4 screens

Verdict

The call

The clearest difference is review sentiment: Lumen at 100% against Klippy's 50%. Lumen also leads on rating (5.0 vs 3.8). Klippy's advantage is update cadence (every 2 days vs every 2 weeks) and device support (3 vs 1). On price, ratings volume, ads and in-app purchases 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

Lumen holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 100% of Lumen's written reviews are positive against 50% of Klippy's.

UpkeepUpdate frequency

Lumen ships an update every 2 weeks, Klippy every 2 days. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

Scorecard4 real differences · 6 level
Lumen versus Klippy: the parameters behind the verdict, then further details
ParameterLumenKlippy
PriceFreeFree
Rating5.0 (4 ratings) — better3.8 (4 ratings)
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings44
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, Mac — better
Requires iOS18.017.0 — better
Further details — not scored
Size28 MB8 MB
Age rating17+4+
DeveloperDaniel KosukhinRodjemel Faburada

Customer experience

Lumen

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Klippy

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Lumen

No in-app purchases

None

Klippy

No in-app purchases

Questions

Is Lumen free?
Lumen is free to download, with no in-app purchases.
Is Klippy free?
Klippy is free to download, with no in-app purchases.
Which has better reviews, Lumen or Klippy?
Lumen is rated higher. Lumen averages 5.0 out of 5 from 4 ratings, while Klippy averages 3.8 from 4 ratings.
Do Lumen or Klippy have ads?
Neither Lumen nor Klippy shows ads.
Which is updated more often, Lumen or Klippy?
Lumen ships an update every 2 weeks, and Klippy every 2 days. Most recently, Lumen was updated on October 14, 2026 and Klippy on October 17, 2026.

Other comparisons