Comparison

Zeus vs Eira

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

Head to head
About

Zeus

Features
Read full description

Zeus is a private AI workspace for iPhone, iPad and Mac. Start in a clean chat, choose Offline or Zeus Cloud, attach documents, run structured agent tasks and keep every answer tied to a clear privacy receipt. Offline mode is free and works without an account. Zeus Cloud AI is available with Zeus Pro when you choose online processing. Sign in with Apple is used for Pro access and optional sync. What you can do: • Chat in a focused, modern interface • Switch between Offline and Zeus Cloud • Use local tools without an account • Unlock hosted AI with Zeus Pro • Keep chat history and workspaces organized • Analyze PDFs, text and Markdown files • Turn ideas into plans with agents • Dictate prompts and listen to replies • See where each response was processed • Export summaries, prompts and reports Zeus is built for people who want powerful AI with clear control over privacy, cost and context. Local-first. Cloud when you choose it. Private by design. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Eira

Features
Read full description

Eira is a private AI assistant that lives entirely on your device. Unlike cloud chatbots, Eira runs on-device language models. Your questions are answered right on your device. Nothing you type is ever sent to a server, and Eira works even with no internet connection at all. YOUR CONVERSATIONS BELONG TO YOU • No account, no sign-up, no API keys • No cloud processing: all inference happens on device • No analytics, no tracking, no ads • Works fully offline A CHAT EXPERIENCE THAT FEELS NATIVE • Opens straight into your last conversation • Streaming responses you can stop mid-answer • Unlimited conversations with search across every message • Pin your favorites and rename chats to stay organized • Copy any answer or export whole conversations as Markdown MAKE IT YOURS • Light and dark themes in a warm, focused palette • Three accent colors: Royal Gold, Razzmatazz, and Cobalt Blue PRIVATE BY DESIGN Eira stores your conversations only on your device. There is no Eira server, and the app makes no network connections. When we say your conversations belong to you, it's not a slogan — it's the architecture. REQUIREMENTS Eira needs an iPhone that supports Apple Intelligence with Apple Intelligence turned on in Settings, running iOS 26 or later. Your conversations belong to you.

Screenshots

Zeus1 screens
Eira3 screens

Verdict

The call

The clearest difference is in-app purchases: Eira at none against Zeus's 4. On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Zeus sells 4 in-app purchases, starting at $2.99 per month. Eira asks for nothing beyond the download.

Scorecard1 real difference Ā· 5 level
Zeus versus Eira: the parameters behind the verdict, then further details
ParameterZeusEira
PriceFreeFree
Update frequencyMonthly—
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad — betteriPhone
Requires iOS26.526.0 — better
Further details — not scored
Size9 MB1 MB
Age rating17+12+
DeveloperEnrique IvarsDulio Denis

In-app purchases

4 purchases

Zeus

Subscriptions4
  • Zeus Pro Monthly$2.991 Month
  • Zeus Pro Max Monthly$14.991 Month
  • Zeus Pro Yearly$29.991 Year
Show 1 more
  • Zeus Pro Max Yearly$149.991 Year
None

Eira

No in-app purchases

Questions

Is Zeus free?
Zeus is free to download, with in-app purchases available.
Is Eira free?
Eira is free to download, with no in-app purchases.
Do Zeus or Eira have ads?
Neither Zeus nor Eira shows ads.

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