Comparison

Kulvex vs chat4000

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

Head to head
About

Kulvex

Features
Read full description

KULVEX is the official client for connecting to your self-hosted KULVEX server: an autonomous AI platform that lives on your own infrastructure, not in the cloud. Built for people who want the power of modern AI without handing their data to third parties, KULVEX lets you chat with intelligent assistants, control your connected home and run custom agents — all pointing at the server you choose. KEY FEATURES • Local-first AI chat against your own KULVEX server • On-device models available for offline use • Unified smart home control: lights, climate, solar, security, cameras • Custom agents with tools, voice mode and tailored instructions • Voice input with on-device speech recognition • Camera and QR for fast server access • Face ID to unlock the app and authorize sensitive actions • Offline mode unlocks after your first successful sign-in • Apple Silicon support with MLX acceleration PRIVACY BY DESIGN KULVEX is a pure client: the app connects only to the server you specify. We don't send your data to third parties, we don't collect analytics, we don't operate a backend. Voice transcription happens on-device using Apple's local engine. REQUIREMENTS KULVEX is a server client. You need access to a KULVEX server (on your local network, on your own infrastructure, or via a compatible instance). Learn more about deploying your own server at kulvex.ai. Designed on Apple Silicon, optimized for iPhone.

About

chat4000

Read full description

chat4000 is the iPhone companion for OpenClaw, designed to feel faster, cleaner, and more polished to use every day. Use chat4000 to: • Connect to your OpenClaw setup from iPhone • Send and receive messages across your paired devices • Record and send voice messages • Receive notifications when new messages arrive • Quickly jump back into conversations with shortcuts on supported devices chat4000 gives you a more refined mobile experience for OpenClaw, with secure paired-device communication, responsive chat, and a simpler interface built for iPhone. An existing OpenClaw setup is required for full functionality.

Screenshots

Kulvex4 screens
chat40003 screens

Verdict

The call

Kulvex and chat4000 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Kulvex versus chat4000: the parameters behind the verdict, then further details
ParameterKulvexchat4000
PriceFreeFree
Update frequency—Fortnightly
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, Mac — better
Requires iOS17.017.0
Further details — not scored
Size25 MB59 MB
Age rating4+4+
DeveloperBruno AiubNeonNode

In-app purchases

None

Kulvex

No in-app purchases

None

chat4000

No in-app purchases

Questions

Is Kulvex free?
Kulvex is free to download, with no in-app purchases.
Is chat4000 free?
chat4000 is free to download, with no in-app purchases.
Do Kulvex or chat4000 have ads?
Neither Kulvex nor chat4000 shows ads.

Other comparisons