Comparison

Njn vs Codename Jo

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

Head to head
About

Njn

Features
Read full description

Njn puts Z in your pocket. Talk to it out loud, the way you talk to a person, and it gets things done - on your Mac, in your home and across your day. Talk, don't type Say "Hey Z" or tap the orb and start talking. Interrupt any time. Z answers out loud, with a living visual interface that moves as you speak. Typing is there when you want it. One mind across your devices Pair the app with Njn on your Mac and your phone becomes its voice. The same conversation follows you from desk to pocket. Ask it to open an app on your Mac, pick up a task, or tell you how work running there is going. Your home, by voice Turn lights on and off, set scenes and check your devices through Apple Home, just by asking. Memory that stays yours Njn keeps a private memory of what matters to you - the Library of Awareness - so context carries from one conversation to the next. The more you use it, the better it knows how you work. A crew, not a chatbot Z leads a crew of agents, each with its own voice and strengths. Switch between them on command. The best models in one place Njn works with leading frontier models, and with models running locally on your own Mac, through one interface. Key features - Hands-free voice with a "Hey Z" wake word - Works with Njn on your Mac: shared conversations, apps and tasks - Apple Home control by voice - Private, persistent memory across sessions - Leading AI models plus local models on your Mac - Customizable voices, avatars and appearance - Local-first, built around privacy and speed Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Codename Jo

This voice assistant helps manage your inbox and calendar by summarizing emails, drafting replies, and scheduling events. It integrates with various work tools and can be controlled from your Apple Watch.

Highlights
  • Summarize emails
  • Draft and send replies
  • Organize messages
  • Manage calendar events
  • Integrate with work tools
  • Apple Watch companion app
Features
Read full description

Codename Jo is a voice assistant for your inbox, calendar and work tools. Talk to Jo to catch up on email, draft replies and manage your day. WORK THROUGH YOUR INBOX Hear summaries of your mail, ask follow-up questions, draft and send replies, and organize messages with archive and label actions. MANAGE YOUR CALENDAR Ask about your schedule and create or update events in Google Calendar. CONNECT YOUR WORK TOOLS Connect Gmail and Google Calendar, with optional connections for Slack, Notion, Granola, GitHub and custom MCP services. Available actions depend on the services you connect and their permissions. TALK FROM YOUR APPLE WATCH Use the Watch companion to start a conversation, mute your microphone or end a call. Keep your paired iPhone nearby with Codename Jo open. WHAT YOU NEED An OpenAI API key with access to the models used by Jo, a Google account for Gmail and Calendar, and an internet connection. OpenAI usage is billed separately to your OpenAI account. Microphone permission is required for voice conversations. Apple Watch is optional. YOUR DATA Your OpenAI key and connected-service credentials are stored in the device Keychain. Voice and relevant connected content are sent to the AI and service providers needed to fulfill your requests. Privacy Policy: https://kiloforge.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Njn3 screens
Codename Jo4 screens

Verdict

The call

The clearest difference is in-app purchases: Codename Jo at none against Njn's 1. Codename Jo also leads on ads (none vs shown). On price, update cadence, device support 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. Njn sells 1 in-app purchase, starting at $14.99 per month. Codename Jo asks for nothing beyond the download.

UpkeepUpdate frequency

Njn ships an update every 9 days, Codename Jo every 5 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Njn versus Codename Jo: the parameters behind the verdict, then further details
ParameterNjnCodename Jo
PriceFreeFree
Rating—1.0 (1 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 9 daysEvery 5 days — better
AdsYesNo — better
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS26.0 — better26.4
Further details — not scored
Size56 MB110 MB
Age rating17+4+
DeveloperMichael MurphyPetaforge Inc.

In-app purchases

1 purchases

Njn

Subscriptions1
  • Njn Premium3 Days trial$14.991 Month
None

Codename Jo

No in-app purchases

Questions

Is Njn free?
Njn is free to download, with in-app purchases available.
Is Codename Jo free?
Codename Jo is free to download, with no in-app purchases.
Do Njn or Codename Jo have ads?
Njn shows ads; Codename Jo does not.
Which is updated more often, Njn or Codename Jo?
Njn ships an update every 9 days, and Codename Jo every 5 days. Most recently, Njn was updated on October 28, 2026 and Codename Jo on October 25, 2026.

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