# Lucid vs Ki

The clearest difference is in-app purchases: Lucid at none against Ki's 1. Ki's advantage is update cadence (every 2 days vs fortnightly). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Ki sells 1 one-off in-app purchase. Lucid asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Lucid against 5.0 for Ki. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Lucid ships an update fortnightly, Ki every 2 days. The most recent releases landed on September 28, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Lucid | Ki |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/lucid-notes-and-outlines/id6760377356/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/ki-note/id6761021371/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free | Free |
| Size | 5 MB | 4 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [illia chaban](https://appshunter.io/developer/1875606183) | [Juan Casanueva](https://appshunter.io/developer/427769040) |

## What reviewers say

### Lucid

[App page](https://appshunter.io/ios/app/lucid-notes-and-outlines/id6760377356)

Organize your thoughts with a minimalist, gesture-driven note-taking app. Connect and nest ideas fluidly with block-based editing. Bookmark sections and navigate easily with intuitive gestures.

**Highlights:** Minimalist and intuitive design, Fluid, block-based editing, Gesture-driven navigation, Bookmark any section, Spacebar caret navigation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Ki

[App page](https://appshunter.io/ios/app/ki-note/id6761021371)

Capture, organize, and connect all your learning in one place. This app allows you to save notes, links, code snippets, and ideas, then link them together to build a web of knowledge. Find anything fast with full-text search and visual knowledge graphs.

**Highlights:** Capture notes, links, quotes, code snippets, and ideas, Organize with color-coded tags and custom topics, Connect notes with bidirectional linking, Visualize knowledge with interactive graphs, Full-text search and saved searches, Quick capture via floating button and widgets, Review workflow for managing notes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $0.99 | one-time |


## Frequently asked questions

### Is Lucid free?

Lucid is free to download, with no in-app purchases.

### Is Ki free?

Ki is free to download, with in-app purchases available.

### Which has better reviews, Lucid or Ki?

Lucid and Ki are both rated 5.0 out of 5 on the App Store, from 5 and 2 ratings respectively.

### Do Lucid or Ki have ads?

Neither Lucid nor Ki shows ads.

### Which is updated more often, Lucid or Ki?

Lucid ships an update fortnightly, and Ki every 2 days. Most recently, Lucid was updated on September 28, 2026 and Ki on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*