Comparison

ExtMemo vs FreeSpace‑Clean Storage

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
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[+] 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

FreeSpace‑Clean Storage

This app helps you free up storage space by identifying and removing duplicate photos, oversized videos, and large files from your downloads and documents. It offers media compression and a swipe-to-clean interface for efficient organization.

Highlights
  • Scans downloads, documents, and large files
  • Finds duplicate and similar photos
  • Identifies largest videos and screenshots
  • Compresses media without quality loss
  • Swipe to clean interface
  • Analyzes files locally on device
Features
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Storage full? FreeSpace cleans what other cleaner apps skip: your downloads, documents, and large files — plus duplicate photos and oversized videos. YOUR FILES, FINALLY INCLUDED Most cleaners only look at your photo library. FreeSpace also scans the files you picked up along the way — downloads, documents, archives — so you can see exactly what's eating your storage and remove it in a tap. PHOTOS & VIDEOS • Find duplicate and similar photos instantly • Spot your largest videos and screenshots • Compress media without visible quality loss SWIPE TO CLEAN Sort your camera roll with a swipe — right to keep, left to remove. A month of photos reviewed in minutes. PRIVATE BY DESIGN Everything is analyzed on your iPhone. Nothing is uploaded. No account needed. HONEST PRICING No weekly subscription traps. Try the free trial, keep what works. Download FreeSpace and see what your storage is really holding. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ExtMemo4 screens
FreeSpace‑Clean Storage4 screens

Verdict

The call

The clearest difference is update cadence: ExtMemo at every 2 weeks against FreeSpace‑Clean Storage's monthly. On price, rating, review sentiment and ratings volume 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 and FreeSpace‑Clean Storage sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for ExtMemo against 5.0 for FreeSpace‑Clean Storage. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

ExtMemo ships an update every 2 weeks, FreeSpace‑Clean Storage monthly. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard1 real difference · 9 level
ExtMemo versus FreeSpace‑Clean Storage: the parameters behind the verdict, then further details
ParameterExtMemoFreeSpace‑Clean Storage
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.1 — better15.6
Further details — not scored
Size46 MB19 MB
Age rating4+4+
DeveloperExtMemo AI Technology (Beijing) Co., Ltd海鹏 李

Customer experience

ExtMemo

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

FreeSpace‑Clean Storage

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

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
2 purchases

FreeSpace‑Clean Storage

Subscriptions2
  • Weekly Pro Access3 Days trial$4.997 Days
  • Annual Pro Access$29.991 Year

Questions

Is ExtMemo free?
ExtMemo is free to download, with in-app purchases available.
Is FreeSpace‑Clean Storage free?
FreeSpace‑Clean Storage is free to download, with in-app purchases available.
Which has better reviews, ExtMemo or FreeSpace‑Clean Storage?
ExtMemo and FreeSpace‑Clean Storage are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do ExtMemo or FreeSpace‑Clean Storage have ads?
Neither ExtMemo nor FreeSpace‑Clean Storage shows ads.
Which is updated more often, ExtMemo or FreeSpace‑Clean Storage?
ExtMemo ships an update every 2 weeks, and FreeSpace‑Clean Storage monthly. Most recently, ExtMemo was updated on November 5, 2026 and FreeSpace‑Clean Storage on November 6, 2026.

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