# PlainLock vs Marked

The clearest difference is price: Marked at Free against PlainLock's $2.99. PlainLock's advantage is in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement there is nothing between them.

Marked is free to download; PlainLock costs $2.99 up front. Marked sells 3 in-app purchases, starting at $2.99 per month. PlainLock asks for nothing beyond the download.

PlainLock ships an update every 5 days, Marked every 4 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PlainLock | Marked |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/marked-organize-book-quotes/id6807306865/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 3 MB | 27 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Chang Jhih Yeh](https://appshunter.io/developer/6787857579) | [Tingan Cho](https://appshunter.io/developer/6805800429) |

## What reviewers say

### PlainLock

[App page](https://appshunter.io/ios/app/plainlock-screen-time-blocker/id6789597367)

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

**In-app purchases:** none


### Marked

[App page](https://appshunter.io/ios/app/marked-organize-book-quotes/id6807306865)

Capture and organize memorable quotes and highlights from books and articles. Rediscover them through daily reminders and home screen widgets, adding your own reflections to deepen understanding. Designed for avid readers who want to revisit and remember what they've read.

**Highlights:** Save quotes and highlights, Import from e-readers, Daily quote reminders, Home screen widgets, Add personal notes, Camera capture for physical books

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $14.99 | per year |
| Premium Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is PlainLock free?

PlainLock costs $2.99, with no in-app purchases.

### Is Marked free?

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

### Do PlainLock or Marked have ads?

Neither PlainLock nor Marked shows ads.

### Which is updated more often, PlainLock or Marked?

PlainLock ships an update every 5 days, and Marked every 4 days. Most recently, PlainLock was updated on October 25, 2026 and Marked on October 31, 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.*