MemX vs Rewind: AI Memory Agent vs Screen Recorder

Rewind continuously recorded your Mac screen and audio so you could search your past. MemX captures only what you choose (documents, photos, voice notes, WhatsApp) and answers your questions with sources.

Try MemX Free
The MemX app answering a search for a hotel in Porto, with the matching PDF and photos

Rewind was a macOS app that ran in the background and continuously recorded everything on your screen plus your audio, letting you scroll back and search your digital history in natural language. After Rewind AI rebranded to Limitless and pivoted to a wearable Pendant, Meta acquired the company in December 2025 and the original Rewind Mac app was shut down, with screen and audio capture disabled on December 19, 2025.

Feature Comparison

FeatureMemXRewind
Currently available to new users Yes No
AI-powered Q&A with sources YesAsk Rewind (recordings, discontinued)
Continuous screen recording NoWas core (discontinued)
Capture only what you choose Yes No
Document scanning with OCR Yes No
Photo memory (auto-flags receipts, IDs, prescriptions) Yes No
Voice to Memory (live transcription) YesMeeting audio
Multi-language transcription YesUnclear
WhatsApp import Yes No
Smart reminders you approve Yes No
Recurring reminders from plain language Yes No
Encryption at rest, key per account YesLocal AES-256
No AI training on your content YesUnclear
Save originals or text to your device YesExport before shutdown
Mobile-first capture on the go Yes No
PlatformsAndroid, iOS, WhatsAppMac (discontinued)

Why Choose MemX Over Rewind?

You Choose What to Capture

Rewind recorded your entire screen and audio in the background, which raised obvious privacy questions. MemX flips that: you capture only the documents, photos, voice notes and WhatsApp chats you want remembered. You control what MemX reads: pick folders on iPhone, or exclude folders on Android. MemX reads receipts, forms and documents in your photos and pulls out names, dates and amounts.

Answers With Citations, Not Just Search

Rewind let you search and replay what it recorded. Ask MemX runs vector search across everything you have captured and returns a synthesized answer along with the source memory shown with each answer, so you can verify where the answer came from.

Built for Mobile, Not the Desktop

Rewind was a Mac app for capturing your computer activity. MemX is mobile-first, live on Android, with iOS on the App Store, plus a WhatsApp integration, so you can scan a prescription, snap a receipt or record a long voice note wherever you are. MemX is a phone app for Android and iPhone.

Available Now, Built for Privacy

The original Rewind app was discontinued after Meta acquired Limitless. MemX is actively available, encrypts content at rest with a key per account, and logs every read.

More context

Because the always-on Rewind recorder is no longer available, the practical comparison today is between two very different approaches to a personal memory: a desktop tool that captured everything passively, and MemX, a mobile-first AI second brain (live on Android, with iOS on the App Store) where you decide what to capture.

Instead of recording your whole screen, you dump documents, photos, scanned files, voice notes and WhatsApp chats into MemX. The AI reads and indexes them, and you ask questions in plain English to get answers with the source memory shown beside it. MemX can also turn a phrase like "antibiotics twice daily for 5 days" into a reminder you review, and shows your captured dates on a built-in Calendar view alongside Chat and Memories.

Frequently asked questions

No. After Rewind AI rebranded to Limitless and shifted to a wearable Pendant, Meta acquired the company in December 2025. The original Rewind Mac app was sunset, and screen and audio capture were disabled on December 19, 2025. If you are looking for a current personal AI memory, MemX is live on Android, with iOS on the App Store.
Rewind was a Mac app that continuously recorded your screen and audio so you could search your past. MemX is a mobile AI memory agent where you choose what to capture (documents, photos, voice notes and WhatsApp chats) and ask questions in plain English to get answers with the source memory shown beside it.
MemX is a good alternative if you want a personal AI second brain rather than a screen recorder. Instead of capturing everything on your desktop, you upload the documents, photos and voice notes you care about, and MemX reads, indexes and answers questions about them. It is available on Android, iOS (App Store) and WhatsApp.
No. MemX does not record your screen or audio. Smart Scanner, if you turn it on, reads new photos and documents in the background. You explicitly capture what you want remembered: scan a document, snap a photo, record a voice note or import a WhatsApp chat. MemX recognises receipts and documents in your photos, , and you control what it reads: pick folders on iPhone, or exclude folders on Android.
MemX is private by architecture: content is encrypted at rest with a key per account, and every read is logged.

Sources

More Comparisons

MemX vs Google KeepMemX vs NotionMemX vs EvernoteMemX for ProfessionalsMemX for ParentsReal-World Use CasesAll Comparisons

Ready to Switch from Rewind?

Free to start.

Download for AndroidDownload for iOS

Free to start. All install options