# Liminal vs Sub Keeper Tracker

The clearest difference is ads: Liminal at none against Sub Keeper Tracker's shown. Sub Keeper Tracker's advantage is device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Liminal sells 2 in-app purchases, starting at $14.99 per month and Sub Keeper Tracker sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Liminal ships an update every 5 days, Sub Keeper Tracker every 9 days. The most recent releases landed on October 29, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Liminal | Sub Keeper Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 9 days |
| Size | 151 MB | 78 MB |
| Requires iOS | 16.4 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [ProgramU LLC](https://appshunter.io/developer/1896458289) | [Andrii Zhuravskyi](https://appshunter.io/developer/6810368930) |

## What reviewers say

### Liminal

[App page](https://appshunter.io/ios/app/liminal-lucid-dream-journal/id6798420918)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $14.99 | per month |
| Premium Annual | $89.99 | per year |


### Sub Keeper Tracker

[App page](https://appshunter.io/ios/app/sub-keeper-tracker/id6811046840)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $3.99 | per month |
| Support Sub Keeper | $0.99 | one-time |
| Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Liminal free?

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

### Is Sub Keeper Tracker free?

Sub Keeper Tracker is free to download, with in-app purchases available.

### Do Liminal or Sub Keeper Tracker have ads?

Sub Keeper Tracker shows ads; Liminal does not.

### Which is updated more often, Liminal or Sub Keeper Tracker?

Liminal ships an update every 5 days, and Sub Keeper Tracker every 9 days. Most recently, Liminal was updated on October 29, 2026 and Sub Keeper Tracker on November 6, 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.*