# Lucid vs Sync

The clearest difference is price: Lucid at Free against Sync's $4.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Lucid is free to download; Sync costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Lucid ships an update every 3 days, Sync every 5 days. The most recent releases landed on September 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Lucid | Sync |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 days |
| Size | 2 MB | 10 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Goo wong Kwon](https://appshunter.io/developer/1895637047) | [Jaewon Seo](https://appshunter.io/developer/1880940306) |

## What reviewers say

### Lucid

[App page](https://appshunter.io/ios/app/lucid-second-brain/id6777908024)

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

**In-app purchases:** none


### Sync

[App page](https://appshunter.io/ios/app/sync-plan-and-actual/id6808510515)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Lucid free?

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

### Is Sync free?

Sync costs $4.99, with no in-app purchases.

### Do Lucid or Sync have ads?

Neither Lucid nor Sync shows ads.

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

Lucid ships an update every 3 days, and Sync every 5 days. Most recently, Lucid was updated on September 17, 2026 and Sync on October 1, 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.*