# Time Leaf Clock vs BlackLock

The clearest difference is in-app purchases: Time Leaf Clock at none against BlackLock's 2. Time Leaf Clock also leads on iOS requirement (15.6 vs 26.0). BlackLock's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. BlackLock sells 2 in-app purchases, starting at $4.99 per month. Time Leaf Clock asks for nothing beyond the download.

Time Leaf Clock ships an update every 2 months, BlackLock every 3 weeks. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Time Leaf Clock | BlackLock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/blacklock-blackout-study-ai/id6757925521/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 27 MB | 20 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [A-Wave ltd.](https://appshunter.io/developer/1817604389) | [GOAT STEW LLC](https://appshunter.io/developer/1854036252) |

## What reviewers say

### Time Leaf Clock

[App page](https://appshunter.io/ios/app/time-leaf-clock/id6746640141)

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

**In-app purchases:** none


### BlackLock

[App page](https://appshunter.io/ios/app/blacklock-blackout-study-ai/id6757925521)

This app is a comprehensive study tool that helps you capture notes, link concepts, and visualize relationships. It transforms your material into flashcards and quizzes, offering active recall practice and the ability to import and annotate documents.

**Highlights:** Rich text note-taking, Concept linking with backlinks and tags, Interactive mind map visualization, AI-powered flashcard generation, Active recall blackout study mode, PDF, image, and slide import, Annotation with Apple Pencil

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $39.99 | per year |


## Frequently asked questions

### Is Time Leaf Clock free?

Time Leaf Clock is free to download, with no in-app purchases.

### Is BlackLock free?

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

### Do Time Leaf Clock or BlackLock have ads?

Neither Time Leaf Clock nor BlackLock shows ads.

### Which is updated more often, Time Leaf Clock or BlackLock?

Time Leaf Clock ships an update every 2 months, and BlackLock every 3 weeks. Most recently, Time Leaf Clock was updated on September 17, 2026 and BlackLock on September 18, 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.*