Synapse Notes vs MemX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Synapse Notes
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Synaps Notes is a private, on-device note app built for local AI. Write and organize notes directly on your iPhone. Chat with your own notes and documents using local AI models. Import PDFs, images, and text files with OCR support. Keep your data on-device by default, with optional Google Drive backup. No account is required to use the core features
MemX
This app acts as a digital second brain, allowing you to search and retrieve information from various sources like documents, photos, and audio recordings. It uses AI to transcribe conversations, set reminders, and extract key details, making your saved content easily searchable through natural language queries.
- Search inside any document (PDFs, contracts, etc.)
- Record and transcribe conversations (100+ languages)
- Set recurring voice reminders and to-dos
- Integrate WhatsApp chats and files
- Capture and search text from photos
- Cross-reference information across multiple sources
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MemX is your AI memory — a second brain that reads everything you save and answers in plain words, so you never dig through files again. We all have critical info scattered across photos, PDFs, WhatsApp messages, and voice notes. Searching it is a nightmare. MemX reads it all — even the text inside your photos, documents, and audio — then connects the dots so you can ask a question and find what matters in seconds. WHAT YOU CAN DO Search inside any document PDFs, contracts, leases, research papers, specs, statements, certificates. Drop them in once, then search inside them anytime — without opening the file, remembering the filename, or tagging anything. Record and transcribe any conversation Meetings, interviews, calls, lectures, doctor visits. MemX records, transcribes, and turns hours of audio into structured notes with action items. 100+ languages, mixed-language recordings in one session. Set reminders and to-dos by voice Just say it in plain words: "Remind me every Monday and Thursday to follow up with the client for the next six weeks." MemX sets the recurring reminders, ends them on time, and won't let them go until you mark them done. It even pulls to-dos out of your documents automatically. Bring in WhatsApp Forward documents, photos, voice notes, and full chat histories to MemX once — then search them forever. Pull up the contract a client sent or the doctor a friend recommended months ago. Capture from your camera Point your camera at a prescription, business card, whiteboard, contract clause, error screen, or napkin sketch. MemX reads what's inside and makes it searchable forever. THEN JUST ASK "What's the indemnification clause in the Acme contract?" "What were the action items from last Tuesday's review?" "When does my insurance policy expire?" No folders. No tags. No filenames. Ask in plain words — in any language — and your AI memory finds the answer inside the document, recording, photo, or chat where it lives. BUILT FOR PROFESSIONAL USE Search across every contract, spec, recording, and client document you've saved. Cross-reference findings across hundreds of research papers in one query. Pull up boarding passes, prescriptions, lab reports, bills, and warranties without opening a single file — your whole life, searchable. PRIVATE BY ARCHITECTURE Per-user encryption with keys only you control. Even the MemX team can't read your data — not as a policy, but as a property of the system itself. Your content is never used to train AI models. Delete everything, anytime. Stop remembering. Start asking. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Synapse Notes at none against MemX's 6. Synapse Notes also leads on update cadence (every 2 days vs weekly). MemX's advantage is iOS requirement (15.5 vs 17.0). 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
Both are free to download. MemX sells 6 in-app purchases, starting at $7.99 per month. Synapse Notes asks for nothing beyond the download.
Synapse Notes ships an update every 2 days, MemX weekly. The most recent releases landed on September 13, 2026 and September 10, 2026 respectively.
| Parameter | Synapse Notes | MemX |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 days — better | Weekly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.5 — better |
| Further details — not scored | ||
| Size | 8 MB | 87 MB |
| Age rating | 4+ | 12+ |
| Developer | Can Ahmet Ozguven | Neural Forge Technologies |
In-app purchases
Synapse Notes
No in-app purchases
MemX
- MemX Starter$7.991 Month
- MemX Pro14 Days trial$9.991 Month
- MemX MAX$19.991 Month
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- MemX Starter Annual$66.991 Year
- MemX Pro Annual$99.991 Year
- MemX MAX Annual$199.991 Year









