HiJavis vs Kairos
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HiJavis
This AI-powered voice assistant helps users with various tasks through spoken commands. It offers a hands-free experience for managing your device and accessing information.
- Voice command interaction
- AI-powered assistance
- Hands-free operation
- Device management
- Information access
Read full descriptionHide full description
Javis Personal AI Agents Capture ideas instantly, organize your knowledge into your personal second brain, and connect with AI agents to help you work and think more effectively. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Kairos
Read full descriptionHide full description
Most timers tell you exactly when they end. Kairos does not. Set a minimum and maximum duration, start the timer, and Kairos chooses a random moment in between. You know the range. You do not know the exact finish. That simple twist makes Kairos useful anywhere timing should stay unpredictable. USE KAIROS FOR - Meditation: sit without watching the clock - Exercise: hold effort without bracing for the last seconds - Study sessions: add flexible focus or break intervals - Interval training: Auto Repeat randomises every set so you never anticipate the next round - Party games: perfect for Hot Potato, Musical Chairs, and other pass-it-fast games FEATURES - Random timer between your chosen minimum and maximum - Clean countdown interface designed for iPhone - Hide Time Display for a more focused, less predictable experience - Auto Repeat, Overtime, and Auto Stop modes after the timer ends - Label your timers for quick recognition in Recents - Choice of built-in alarm sounds - Haptic feedback when time is up - Recents for quickly restarting favorite timer setups - Light, Dark, and System theme - No ads or sign-up required Kairos is built for the moments when exact timing gets in the way and a little uncertainty makes the experience better.
Screenshots
Verdict
The clearest difference is iOS requirement: Kairos at 15.1 against HiJavis's 17.0. On price, update cadence, ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
HiJavis ships an update weekly, Kairos every 4 days. The most recent releases landed on September 14, 2026 and September 15, 2026 respectively.
| Parameter | HiJavis | Kairos |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 309 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | DeepShare Inc. | Benno Kohrs |
In-app purchases
HiJavis
No in-app purchases
Kairos
No in-app purchases









