Comparison

Synap.ing vs Ounie

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

Head to head
About

Synap.ing

Organize your thoughts, decisions, and patterns into a dynamic knowledge graph. Search by meaning, visualize connections in 3D, and gain insights with AI. Capture information seamlessly from any app or device.

Highlights
  • Living knowledge graph
  • AI chat with multiple models
  • 3D interactive knowledge visualization
  • Semantic search by meaning
  • AI blind spot detection
  • Cognitive archetype discovery
  • Home screen widgets
Features
Read full description

Synap is your memory, externalized. Everything you know, carried outside your head, connected, and yours. Your mind was never meant to hold all of this. Keep a thought in Synap and it stays exactly as you wrote it, on the day you wrote it. Synap connects it to what you already kept, on its own. Nothing to file, nothing to tag. Ask for it back in your own words and the answer comes from your own entries, each one cited. Synap works with or without AI. Keeping, search and the record all run on your iPhone. Bring an assistant when you want one, or do not. Either way the record is yours, on your own device. KEEP ANYTHING, IN SECONDS Type it, say it, share it from any app, or speak it into your Apple Watch. Workouts you record with Apple Watch or any app that saves to Health land in your memory on their own, route included. FIND IT BY MEANING Search understands what you meant, not just the words you used. It runs on your phone, so it works with no signal. ASK YOUR OWN MEMORY Ask a question and get an answer drawn from your own entries, with the exact entries it came from. Use Apple Intelligence on a supported iPhone, sign in with your Claude account, or connect ChatGPT or Gemini. Your entries stay on your phone until you ask. SEE WHAT YOU MISSED Insights reads across everything you kept and shows the patterns, the contradictions and the blind spots. Reflect shows the shape of a season of your thinking. Open the whole record as a map you can move through. BRING WHAT YOU ALREADY HAVE Import your ChatGPT and Claude history and it becomes part of the record the moment it lands. ON YOUR HOME SCREEN AND YOUR WRIST Widgets for today, the record, recent entries and your body. Live Activities while something is being kept. A watch app that leads with one Speak button. PRIVATE BY DESIGN Synap is local first. Your entries, your search and your voice transcription run on your device. Cloud sync is optional and off until you turn it on. Names can be hidden before anything is sent to an AI you connect. FREE Keeping, search and the record on your phone, import of your ChatGPT, Claude and Obsidian history, new entries connected to what you already kept, and a cloud account with sync for up to 1,500 entries. PRO Chat that draws on your whole memory. Patterns, contradictions and blind spots, read for you. An evening digest of what was kept and what connected. Sync in the background, even with the app closed. No cap on what you keep. Know more. Carry less. Terms of Use: https://synap.ing/terms Privacy Policy: https://synap.ing/privacy

About

Ounie

Features
Read full description

Ounie is your build-your-own AI second brain. Add files, links, and notes, and Ounie turns them into an interlinked, searchable knowledge base — then answers your questions using ONLY your sources, with citations back to the exact pages. WHY OUNIE • Grounded answers — every reply is drawn from your own sources and cited, so you can trust it. • Your knowledge, organized — sources are synthesized into a clean wiki with links and a knowledge graph. • Ask anything — chat with one brain or browse the wiki and graph. CAPTURE EVERYTHING • Save links, notes, photos, PDFs, audio, and more. • A Share Sheet extension to send pages and text to a brain from any app. SHARE & DISCOVER • Make a brain public, follow brains, and star the ones you love. • Explore public brains created by the community. • Fork a public brain to start from someone else's knowledge. DO MORE • Sell access to a paid brain in the marketplace (credits per question). • Embed an "Ask" widget on your own website. PLANS Free to start. Pro and Team unlock more brains, sources, questions, widgets, and selling. Buy credit packs anytime. Privacy: answers are generated by third-party AI providers; only your typed message and the relevant brain content are sent — never your account details. You consent before any AI use. Terms: https://ounie.com/terms Terms of Use (EULA):https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy: https://ounie.com/privacy

Screenshots

Synap.ing4 screens
Ounie4 screens

Verdict

The call

The clearest difference is iOS requirement: Ounie at 17.0 against Synap.ing's 26.0. On price, ads, in-app purchases 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. Synap.ing sells 2 in-app purchases, starting at $19.99 per month and Ounie sells 7 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 8 level
Synap.ing versus Ounie: the parameters behind the verdict, then further details
ParameterSynap.ingOunie
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 2 days—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size177 MB10 MB
Age rating4+17+
DeveloperRobb DixonTabTab

In-app purchases

2 purchases

Synap.ing

Subscriptions2
  • Synap Pro Monthly$19.991 Month
  • Synap Pro Yearly$199.991 Year
7 purchases

Ounie

Subscriptions4
  • PRO Monthly$12.991 Month
  • TEAM Monthly$99.991 Month
  • PRO Yearly$119.001 Year
Show 1 more
  • TEAM Yearly$959.001 Year
One-time3
  • Credits 1000$9.99
  • Credits 5000$39.99
  • Credits 20000$119.99

Questions

Is Synap.ing free?
Synap.ing is free to download, with in-app purchases available.
Is Ounie free?
Ounie is free to download, with in-app purchases available.
Do Synap.ing or Ounie have ads?
Neither Synap.ing nor Ounie shows ads.

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