# Liminal vs ReadUnlock

The clearest difference is update cadence: ReadUnlock at every 3 days against Liminal's every 11 days. Liminal's advantage is iOS requirement (17.0 vs 26.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Liminal sells 1 one-off in-app purchase and ReadUnlock sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Liminal ships an update every 11 days, ReadUnlock every 3 days. Both last shipped on October 29, 2026.

## The numbers

| Metric | Liminal | ReadUnlock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/liminal-learn-philosophy/id6770075835/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 3 days** |
| Monetization | Free | — |
| Size | 5 MB | 47 MB |
| Requires iOS | **17.0** | 26.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [OMAR DANIEL GRAZIANO](https://appshunter.io/developer/1896485759) | [Arbaz Patel](https://appshunter.io/developer/1896418219) |

## What reviewers say

### Liminal

[App page](https://appshunter.io/ios/app/liminal-learn-philosophy/id6770075835)

Explore Western philosophy with a comprehensive, self-paced curriculum. Access lessons, philosopher profiles, key terms, and quizzes offline. Learn at your own pace with audio narration and interactive features.

**Highlights:** Comprehensive 4-year philosophy curriculum, 104 lessons and 48 philosopher profiles, Searchable glossary of 82 key terms, Interactive quizzes with explanations, Spaced-repetition flashcards, On-device audio narration, Offline access, no network required

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Liminal Full Access | $9.99 | one-time |


### ReadUnlock

[App page](https://appshunter.io/ios/app/readunlock-screen-time-reader/id6816839512)

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReadUnlock Plus Monthly | $5.99 | per month |
| ReadUnlock Plus Annual | $39.99 | per year |


## Frequently asked questions

### Is Liminal free?

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

### Is ReadUnlock free?

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

### Do Liminal or ReadUnlock have ads?

Neither Liminal nor ReadUnlock shows ads.

### Which is updated more often, Liminal or ReadUnlock?

Liminal ships an update every 11 days, and ReadUnlock every 3 days. Most recently, Liminal was updated on October 29, 2026 and ReadUnlock on October 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.*