Comparison

Onbo vs Knowledge Base

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

Head to head
About

Onbo

Features
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Screenshot a restaurant. Share a post. Paste a link. Onbo finds the place inside, pins it on your map, and files it into a travel list you will actually open again. Your camera roll is a pile of places you meant to try. A screenshot of a restaurant, a saved post about a neighbourhood, a link to a hotel, a video of a cafe you scrolled past at midnight. None of it is searchable, none of it is on a map, and by the time you go out you cannot find any of it. HOW IT WORKS 1. Save anything. Share a link, a post or a video to Onbo, or send it a screenshot. 2. Onbo reads it. It pulls out the place name, the type and the neighbourhood. 3. It lands on your map, pinned to a real address, in a list you choose. 4. You find it later. Search it, browse the map, or open the collection when you are nearby. WHAT YOU CAN DO โ€ข Turn screenshots into places. Send one to Onbo and it reads the name, the type and the neighbourhood instead of leaving it buried in your photos โ€ข Save links, posts and videos from anywhere with one share sheet. A bookmark manager for places, not just pages โ€ข Get the place found automatically. Restaurants, cafes, bars, hotels, shops and viewpoints are matched to a real location โ€ข See every save on a map, so you can open it anywhere and spot what you already wanted to try nearby โ€ข Build a travel list, a food list, a city guide, or a collection for a single trip โ€ข Keep notes on each place. Prices, tips, who recommended it, what to order โ€ข Read AI takeaways that pull the useful part out of a long guide or a ten minute video โ€ข Share a collection with whoever you are travelling with WHAT YOU CAN SAVE โ€ข Links and articles you meant to read later โ€ข Social posts and short videos with a place in them โ€ข Screenshots sitting in your camera roll โ€ข Photos of a menu, a shopfront, or a handwritten recommendation โ€ข Your own notes about somewhere you already know PLACES IT FINDS Restaurants, cafes and coffee shops, bars and wine bars, bakeries, street food, hotels and stays, museums and galleries, parks and beaches, viewpoints, markets, shops, studios, and neighbourhoods worth a walk. PERFECT FOR โ€ข Trip planning. Collect hotels, neighbourhoods and must-visit spots before you go, then open the itinerary as a map when you land โ€ข Food spots. Keep every restaurant and cafe you have been told about in one searchable list instead of across four apps โ€ข Weekend plans. Turn a pile of saved posts into somewhere you are actually going on Saturday โ€ข A travel journal of the places you have been and the ones still to go โ€ข A bucket list you keep adding to, city by city โ€ข Sharing with friends. Send a collection instead of a dump of screenshots WHY IT IS DIFFERENT Bookmark apps store links. Map apps need the name first. Onbo works in the middle: it reads what you saved, works out which real place it means, and puts it where you will find it again. Every save keeps its source, so months later you still know where a place came from and why it caught your eye. Save it. Find the place. Go. This application is licensed under the standard Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Knowledge Base

Features
Read full description

โ–  Knowledge that grows on its own Just save the articles you find interesting โ€” AI quietly compiles them into your own encyclopedia in the background. Knowledge Base is the gentle second brain that helps you graduate from "read once, forget forever." โ–  Save from anywhere, in one step - Save articles directly from Safari or any app's Share Sheet - The + button also lets you add URLs, text, PDFs, photos (OCR), and audio (transcription) - Non-English or non-Japanese content is automatically translated into your chosen language before it's organized Saving finishes instantly โ€” the heavy lifting happens in the background, so you're never kept waiting. โ–  AI organizes key points by topic AI automatically creates and updates "concept pages" โ€” your own personal wiki โ€” across multiple articles. Open the Knowledge tab and topic summaries are always shown up to date. - The most important points come first, no tapping required - Related concepts link to each other automatically, so your knowledge connects - Every page can always be traced back to its original article โ–  Chat that answers with citations "What did that article actually say again?" Ask the AI Chat. - Answers are generated only from the articles you've saved - Tap a citation number to jump straight to the source article - When general knowledge is used to fill a gap, it's always labeled clearly โ–  Fix AI's mistakes in one sentence - Tap "Correct" on any article's detail page and describe the fix in plain language (e.g. "Claude Code is being misread as something else") - Unwanted concepts or tags can be edited, merged, or hidden anytime You always stay in control. โ–  Privacy by design - All AI processing runs entirely on-device via Apple Intelligence - No ads, no tracking, zero data sent to external servers - iCloud sync uses only your own private database โ–  A calm, considered aesthetic A palette of sumi ink and washi paper, elegant Mincho headlines, and breathing negative space inspired by seigaiha waves. Every time you open it, it feels quiet and refined. โ–  Languages Knowledge Base supports 4 interface languages: English, Japanese, Simplified Chinese, and Traditional Chinese. AI-generated summaries, concept pages, and chat replies follow the same language, chosen automatically from your device's language on first launch (you can change it anytime in Settings > Generation Language). โ–  Requirements (important) - AI features (automatic concept-page generation, AI Chat, summaries, translation, auto-tagging) require an iPhone that supports Apple Intelligence - Please turn on Apple Intelligence in Settings before use - Even without Apple Intelligence, you can still save, search, browse, and organize tags for your articles Now, put your iPhone's AI to full use and turn everything you read into knowledge that's truly your own.

Screenshots

Onbo4 screens
Knowledge Base4 screens

Verdict

The call

The clearest difference is in-app purchases: Knowledge Base at none against Onbo's 1. Knowledge Base also leads on ads (none vs shown). Onbo's advantage is update cadence (every 4 days vs weekly) and iOS requirement (16.4 vs 26.4). On price and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Onbo sells 1 in-app purchase, starting at $34.99 per year. Knowledge Base asks for nothing beyond the download.

UpkeepUpdate frequency

Onbo ships an update every 4 days, Knowledge Base weekly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard4 real differences ยท 2 level
Onbo versus Knowledge Base: the parameters behind the verdict, then further details
ParameterOnboKnowledge Base
PriceFreeFree
Update frequencyEvery 4 days โ€” betterWeekly
AdsYesNo โ€” better
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS16.4 โ€” better26.4
Further details โ€” not scored
Size116 MB9 MB
Age rating4+4+
DeveloperSieu ThaiCHANG CHIA-WEI

In-app purchases

1 purchases

Onbo

Subscriptions1
  • Annual Pro$34.991 Year
None

Knowledge Base

No in-app purchases

Questions

Is Onbo free?
Onbo is free to download, with in-app purchases available.
Is Knowledge Base free?
Knowledge Base is free to download, with no in-app purchases.
Do Onbo or Knowledge Base have ads?
Onbo shows ads; Knowledge Base does not.
Which is updated more often, Onbo or Knowledge Base?
Onbo ships an update every 4 days, and Knowledge Base weekly. Most recently, Onbo was updated on October 28, 2026 and Knowledge Base on October 31, 2026.

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