Comparison

Njn vs Sleeveworks

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

Sleeveworks

Engage in private AI conversations with distinct personalities running directly on your device. Choose from a variety of characters, interact via voice or text, and maintain local conversation history without internet access or tracking.

Highlights
  • On-device AI processing
  • Multiple AI personalities
  • Voice and text interaction
  • Offline conversation support
  • Local conversation history
  • Customizable themes
Features
Read full description

Sleeveworks is private AI with a point of view. Choose a personality, type or talk, and keep the conversation close. Its language model runs directly on your iPhone instead of sending every thought to a cloud AI service. MEET THE CAST Start with Companion, Gremlin, Pengo, Shekky, and Sage. Browse every character, read sample replies, and hear their on-device voice before choosing. Expand your cast with one-time personality unlocks, including Atlas the accountability coach, Bea the warm Southern grandmother, Quill the theatrical bard, Specter the gothic storyteller, and more. Each personality brings a distinct voice, attitude, and way of seeing the conversation. VOICE THAT FEELS LIKE CONVERSATION Tap Talk, speak naturally, and hear Sleeveworks answer. After a reply, the microphone can reopen automatically so the conversation keeps moving. When parallel capture is available, Sleeveworks can continue listening while it responds and place longer interjections in Up Next instead of derailing the current answer. Interrupt at any time when you want to take the floor. PRIVATE BY DESIGN After the one-time model download, core conversations are processed on your iPhone and can work without an internet connection. No account. No advertising. No tracking or analytics. No API key. Optional Wikipedia lookup is off by default and only connects when you enable it. MADE FOR REAL CONVERSATIONS - Keep local conversation history and context - Choose an on-device model suited to your iPhone - Switch personalities without changing apps - Preview character voices before choosing - Type while a response is still being generated - Stop a response without clearing the conversation - Choose between Paperwhite and system themes - Continue chatting after the model is downloaded, even offline Sleeveworks puts the model, the conversation, and the cast directly on your iPhone. Some personalities require a one-time in-app purchase. Initial setup requires an internet connection and sufficient storage to download an on-device language model. Model availability and performance vary by device.

Screenshots

Njn3 screens
Sleeveworks4 screens

Verdict

The call

The clearest difference is ads: Sleeveworks at none against Njn's shown. Sleeveworks also leads on iOS requirement (17.0 vs 26.0). Njn's advantage is device support (3 vs 1). On price, update cadence and in-app purchases 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 and Sleeveworks sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Njn ships an update every 9 days, Sleeveworks every 5 days. The most recent releases landed on October 28, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 6 level
Njn versus Sleeveworks: the parameters behind the verdict, then further details
ParameterNjnSleeveworks
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 9 daysEvery 5 days — better
AdsYesNo — better
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS26.017.0 — better
Further details — not scored
Size56 MB418 MB
Age rating17+17+
DeveloperMichael MurphyJayson Hawley

In-app purchases

1 purchases

Njn

Subscriptions1
  • Njn Premium3 Days trial$14.991 Month
10 purchases

Sleeveworks

One-time10
  • Atlas$1.99
  • Stella$1.99
  • Quill$1.99
Show 7 more
  • Vance$1.99
  • Doc Hertz$1.99
  • Pixel$1.99
  • Bea$1.99
  • Brio$1.99
  • Sterling$1.99
  • Specter$1.99

Questions

Is Njn free?
Njn is free to download, with in-app purchases available.
Is Sleeveworks free?
Sleeveworks is free to download, with in-app purchases available.
Do Njn or Sleeveworks have ads?
Njn shows ads; Sleeveworks does not.
Which is updated more often, Njn or Sleeveworks?
Njn ships an update every 9 days, and Sleeveworks every 5 days. Most recently, Njn was updated on October 28, 2026 and Sleeveworks on October 11, 2026.

Other comparisons