Comparison

ExtMemo vs Kenning

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

Head to head
About

ExtMemo

Capture, secure, and intelligently recall your ideas with an AI-powered external memory system. Offers end-to-end encryption for absolute privacy and seamless collaboration features. Export your data anytime without vendor lock-in.

Highlights
  • Smart Recall AI
  • Zero-Knowledge E2EE
  • Conflict-Free Collaboration
  • Encrypted Team Sharing
  • Web and Desktop App
  • Markdown Data Export
  • AI-Powered Mind Extension
Features
Read full description

[+] Unique Info-Chain Architecture - Group related information into sequential chain, not folders. - Connect fragmented information into one organized thread. - Quick Chain Creation — create a new chain and connect it to the current one. - Add daily or milestone updates to track projects end-to-end. - Track height changes and dental visits in chronological chains. - Give each travel day its own note, with plans and bookings in one chain. [+] End-2-End Encrypted, and Searchable - Granular Flexible Encryption: Encrypt an entire note or only its most sensitive content. - Chain-Wide Search: Unencrypted notes can index and search the entire Note Chain. - Stored neither on the server nor on your device: only briefly in memory when needed for decryption. - Flexible Face ID & Fingerprint Protection — for encrypted content, app access, or not at all. [+] Visible Todos In Context - Todos stay in context: Part of your meeting notes, not a separate task list. - Simple by design: Just set a due date. No complicated setup. - Visualize dependencies: See what to do first and what comes next at a glance. - Organize your thoughts: Turn ideas and tasks into a visual mind map. - Track completion automatically: Completion time is recorded automatically. - Stay on track: Get daily reminders for todos due within the next 5 days. - Manage time-sensitive benefits: Never lose track of unused coupons, credits, or expiring offers. [+] Synced to Desktop (Web App), More Powerful, Maximum Efficiency - Work seamlessly across devices: Stay in sync and handle information more efficiently on the desktop. - Import with ease: Bring your notes into ExtMemo with JSON or Markdown. - Export everything: Export your entire note collection in Markdown for easy access and portability. - Explore your knowledge visually: Use the Nebula View to see semantically connected Note Chains at a glance. - Build your todo flow visually: Drag todos into place and connect them with dependencies. [+] Valuable & Private Information, Shared Securely - Share entire chains: Share Note Chains securely with teammates or family members. - Share encrypted content: E2EE-protected information can be shared without giving up privacy. - Everyone adds their own notes: Members can add or update notes without interfering with each other. - Keep information up to date: Multiple people can update the same chain, keeping everyone aligned on the latest status. [+] More Features - AI Assistant — Your intelligent companion for understanding, finding, and managing your information. - Turn off AI Assistant anytime — it won't access your information. - Sign in instantly with Apple or Google — no separate account needed. - Markdown Editor: Write and format notes with Markdown. - Cross-Chain Links: Link chains together and jump between them instantly. - Bookmarks: Save important notes for quick access. - Dark Mode: A comfortable experience in low-light environments. - Flexible E2EE Rules: Choose what to encrypt: manually, everything, or everything except the top note. - Two Visual Styles: Choose between Simple and Classic styles. - Arrange the information in your Info-Chain in any order you like. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Kenning

Read full description

Kenning Local Translation helps you understand everyday language across text, photos, speech, media files, and short face-to-face conversations. Type or paste text, take or import a photo, choose horizontal or vertical text when needed, and let Kenning extract the words before translating them. You can also speak directly, import an audio file, or choose a video from Photos; Kenning prepares the speech as text, then sends it into the same translation flow. Conversation mode is turn-based for clearer face-to-face use. Pick two languages, record one person at a time, then hear the translated result out loud. History keeps completed translations with the original text, translated text, language pair, source type, and time, so you can return to useful results later. Before you need translation in places with weak signal, open Kenning and prepare the languages and speech recognition assets you expect to use. When the required on-device resources are available, the core translation and speech flow can stay on your iPhone or iPad. Supported languages are English, Traditional Chinese, Japanese, Korean, Spanish, and French. Actual availability depends on Apple system support and installed on-device language resources. Kenning works best for travel, study, daily communication, work reading, photos, speech, media transcripts, and short conversations. For legal, medical, contractual, or other high-risk content, treat the translation as a helpful draft and have the final wording checked by a qualified person.

Screenshots

ExtMemo4 screens
Kenning3 screens

Verdict

The call

The clearest difference is in-app purchases: Kenning at none against ExtMemo's 3. ExtMemo's advantage is update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.1 vs 26.0). On price, ads and device support 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. ExtMemo sells 3 in-app purchases, starting at $2.99 per month. Kenning asks for nothing beyond the download.

UpkeepUpdate frequency

ExtMemo ships an update every 2 weeks, Kenning every 2 months. The most recent releases landed on October 1, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
ExtMemo versus Kenning: the parameters behind the verdict, then further details
ParameterExtMemoKenning
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better26.0
Further details — not scored
Size46 MB5 MB
Age rating4+4+
DeveloperExtMemo AI Technology (Beijing) Co., LtdMason Hsieh

In-app purchases

3 purchases

ExtMemo

Subscriptions2
  • Monthly1 Month trial$2.991 Month
  • Annually2 Months trial$29.991 Year
One-time1
  • Linked Note AI$3.99
None

Kenning

No in-app purchases

Questions

Is ExtMemo free?
ExtMemo is free to download, with in-app purchases available.
Is Kenning free?
Kenning is free to download, with no in-app purchases.
Do ExtMemo or Kenning have ads?
Neither ExtMemo nor Kenning shows ads.
Which is updated more often, ExtMemo or Kenning?
ExtMemo ships an update every 2 weeks, and Kenning every 2 months. Most recently, ExtMemo was updated on October 1, 2026 and Kenning on October 14, 2026.

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