Comparison

Zeno vs Isy.AI

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

Head to head
About

Zeno

Features
Read full description

Zeno gives you one intelligent assistant, Zeno, powered by 15+ AI models including Claude, Gemini, Grok, and Llama. Ask anything — Zeno automatically picks the best model for each question. Features: - Smart model routing — coding questions go to Claude, creative tasks to Grok, image generation to Flux - Personalised daily briefings based on your interests - Conversation memory that learns your preferences - Knowledge modules for specialist domains - Works on iPhone and iPad

About

Isy.AI

Capture thoughts, voice memos, images, and PDFs, and let AI automatically link them to related past ideas. Engage in conversations with your notes, receive daily digests of connected thoughts, and visualize your knowledge network.

Highlights
  • Automatic note linking and connection
  • Text, voice, image, and PDF capture
  • AI-powered chat with your notes
  • Daily digests of connected ideas
  • Visual knowledge map
  • Export notes as Markdown or PDF
Read full description

Write it down. Isy remembers how it connects. Type or talk: a thought on a walk, a line worth keeping, half an idea before sleep. Isy files it, links it to what you thought months ago, and brings it back when it matters. No folders. No manual links. CAPTURE IN SECONDS • Type a note, record your voice, or upload an audio file • Brain dump: talk through everything on your mind and Isy turns each idea into its own note • Turn screenshots, photos, whiteboards and slides into notes • Upload a PDF and keep the concrete ideas that belong in your notebook • Bring in what another AI assistant already knows about you with one prompt ISY CONNECTS IT • Every note is tagged and linked to related earlier notes automatically • A private feed surfaces complete, standalone connections from across your notes • Flip a card for the full read, add a follow-up thought, or continue it in Chat • Hide a connection once and Isy will not bring back that card or a close restatement • The Isy map shows your Areas at a glance and how closely they connect THINK WITH WHAT YOU KNOW • Chat with your notes: answers cite the notes they come from and say so when your notes do not cover something • Tap a paragraph in an answer to save it as a note • A daily digest resurfaces older ideas that connect to what is active now • Optional reminders for new connections and your daily digest EVERYWHERE YOU SIGN IN • Sign in with Apple or Google for a free account: the same notebook on your iPhone and on the web at isy-ai.app • Share a note, digest, connection, map or chat as a clean PDF • Export everything as Markdown at any time • Lock Isy with Face ID TWO WAYS TO USE ISY • With a free account: your notes on every device, and all of Isy's AI • Without an account: a simple notebook on your iPhone. Nothing leaves it, and there are no AI features YOUR NOTES STAY YOURS Your notes are encrypted in transit and at rest. Isy's AI runs through Isy Cloud with Google (Gemini) and Groq, and neither trains AI on your notes. Your notes are never sold and never used for ads. Delete your account any time from Settings. Privacy policy: isy-ai.app/privacy Questions or ideas: support@isy-ai.app

Screenshots

Zeno4 screens
Isy.AI4 screens

Verdict

The call

The clearest difference is in-app purchases: Isy.AI at none against Zeno's 3. Isy.AI also leads on update cadence (every 3 days vs every 6 weeks). Zeno's advantage is device support (3 vs 1). On price, ads and iOS requirement 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. Zeno sells 3 one-off in-app purchases. Isy.AI asks for nothing beyond the download.

UpkeepUpdate frequency

Zeno ships an update every 6 weeks, Isy.AI every 3 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 6 level
Zeno versus Isy.AI: the parameters behind the verdict, then further details
ParameterZenoIsy.AI
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 6 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better16.4
Further details — not scored
Size51 MB60 MB
Age rating4+17+
DeveloperMichael SmythAkhil Arunkumar

In-app purchases

3 purchases

Zeno

One-time3
  • 50 Credits$1.00
  • 200 Credits$2.99
  • 500 Credits$4.99
None

Isy.AI

No in-app purchases

Questions

Is Zeno free?
Zeno is free to download, with in-app purchases available.
Is Isy.AI free?
Isy.AI is free to download, with no in-app purchases.
Do Zeno or Isy.AI have ads?
Neither Zeno nor Isy.AI shows ads.
Which is updated more often, Zeno or Isy.AI?
Zeno ships an update every 6 weeks, and Isy.AI every 3 days. Most recently, Zeno was updated on November 5, 2026 and Isy.AI on November 6, 2026.

Other comparisons