Comparison

Afterlife AI 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

Afterlife AI

Features
Read full description

Build Once. Live Twice.โ„ข Afterlife AIโ„ข builds a Persona of you: an AI that talks like you, thinks like you and answers in your own voice. You build your Persona by talking about your life, the way you would tell a friend. Free to start, no card. TALK OR TYPE, ON ONE BAR Speak or type from the same bar at the foot of the screen. Your Persona asks the next good question, keeps what matters and grows more like you with every answer. Talking is the quickest way in, and every word you say out loud also teaches your Persona your voice. THE VOICE THAT SOUNDS LIKE YOU Record a little of yourself and your Persona answers in your own voice. The more you talk, the closer your Persona sounds to you. YOUR MIND MAP Every memory you share lights up in your Mind Map. Threads show how your Persona links one story to the next. Touch any light to open the memory behind it, or talk about it. YOUR PERSONA CALLS YOU Pick a time and your Persona rings you, like a real phone call. Answer, and talk your story through out loud, a little every day. Calls come with Legacy and Eternal. THAT'S ME, OR NOT ME Each day brings a few short cards about you. Swipe That's me or Not me, and your Persona learns who you are, one answer at a time. YOUR PEOPLE Name the people your Persona is for: your partner, your children, your closest friends. Invite them by email as Trusted Contacts. Then speak to your Persona as one of them in Persona Review, and mark each reply "That's me", or rewrite it in your own words. MESSAGES FOR A DATE Write a message, or record one in your own voice, for someone in Your People. Pick a date, like a birthday or a wedding day, and it reaches them by email on that day. Or keep it for the day your Persona opens to them. GIVE SOMEONE A YEAR OF THEIR OWN Give anyone in Your People a year of Legacy or Eternal, paid once by you, so they can build a Persona of their own. EXECUTOR LOCKโ„ข You decide who holds the key. Your Persona speaks only with you until your Executor makes a report, the report is verified and a seven day cooling-off period passes. Only then does your Persona open to your Trusted Contacts, sealed at that moment: every memory kept, the personality never changed. PRIVATE BY DEFAULT Everything you add is encrypted. You can revoke a Trusted Contact, freeze your Persona, or delete your account and everything in it, at any time. Afterlife AIโ„ข is available in 42 languages. PLANS Free: 25 memories that never expire, 5 Trusted Contacts, Executor Lockโ„ข setup and a first taste of your Persona's voice. Legacy: 500 memories, more replies in your own voice, calls from your Persona, unlimited photos and 10 Trusted Contacts. Eternal: unlimited memories and storage, the most voice and call time, and unlimited Trusted Contacts. Legacy and Eternal come monthly or yearly, and can also be given as a one-year gift. Don't be a memory. Be a conversation. LEGAL Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://www.afterlife.ai/terms-of-service Privacy Policy: https://www.afterlife.ai/privacy-policy

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

Afterlife AI4 screens
Knowledge Base4 screens

Verdict

The call

The clearest difference is in-app purchases: Knowledge Base at none against Afterlife AI's 6. Afterlife AI's advantage is iOS requirement (16.4 vs 26.4). On price, update cadence, ads 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. Afterlife AI sells 6 in-app purchases, starting at $14.99 per month. Knowledge Base asks for nothing beyond the download.

UpkeepUpdate frequency

Afterlife AI ships an update every 8 days, Knowledge Base weekly. Both last shipped on October 31, 2026.

Scorecard2 real differences ยท 4 level
Afterlife AI versus Knowledge Base: the parameters behind the verdict, then further details
ParameterAfterlife AIKnowledge Base
PriceFreeFree
Update frequencyEvery 8 daysWeekly โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhoneiPhone
Requires iOS16.4 โ€” better26.4
Further details โ€” not scored
Size101 MB9 MB
Age rating4+4+
DeveloperIdy Pty LtdCHANG CHIA-WEI

In-app purchases

6 purchases

Afterlife AI

Subscriptions4
  • Legacy$14.991 Month
  • Eternal$29.991 Month
  • Legacy$149.001 Year
Show 1 more
  • Eternal$299.001 Year
One-time2
  • A year of Legacy, as a gift$149.00
  • A year of Eternal, as a gift$299.00
None

Knowledge Base

No in-app purchases

Questions

Is Afterlife AI free?
Afterlife AI 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 Afterlife AI or Knowledge Base have ads?
Neither Afterlife AI nor Knowledge Base shows ads.
Which is updated more often, Afterlife AI or Knowledge Base?
Afterlife AI ships an update every 8 days, and Knowledge Base weekly. Most recently, Afterlife AI was updated on October 31, 2026 and Knowledge Base on October 31, 2026.

Other comparisons