# Lucideck vs Synapsi

The clearest difference is in-app purchases: Synapsi at none against Lucideck's 3. Synapsi also leads on update cadence (every 2 days vs every 4 days) and device support (3 vs 1). Lucideck's advantage is iOS requirement (16.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. Lucideck sells 3 in-app purchases, starting at $5.99 per month. Synapsi asks for nothing beyond the download.

Lucideck ships an update every 4 days, Synapsi every 2 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Lucideck | Synapsi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 92 MB | 81 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Fifth Axis Labs](https://appshunter.io/developer/1896642506) | [Khoa Tran](https://appshunter.io/developer/1523512472) |

## What reviewers say

### Lucideck

[App page](https://appshunter.io/ios/app/lucideck/id6769238574)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lucideck Pro | $5.99 | per month |
| Lucideck Pro | $34.99 | per year |
| Lucideck Pro — Lifetime | $79.99 | one-time |


### Synapsi

[App page](https://appshunter.io/ios/app/synapsi-ai-study-notes/id6780159251)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Lucideck free?

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

### Is Synapsi free?

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

### Do Lucideck or Synapsi have ads?

Neither Lucideck nor Synapsi shows ads.

### Which is updated more often, Lucideck or Synapsi?

Lucideck ships an update every 4 days, and Synapsi every 2 days. Most recently, Lucideck was updated on October 16, 2026 and Synapsi on October 14, 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.*