# 40hz灯 vs Snap Timeline

The clearest difference is ads: 40hz灯 at none against Snap Timeline's shown. 40hz灯 also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). Snap Timeline's advantage is update cadence (weekly vs every 11 months). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

40hz灯 ships an update every 11 months, Snap Timeline weekly. The most recent releases landed on September 28, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 40hz灯 | Snap Timeline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/snap-timeline-notes-taking/id6483687797/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Weekly** |
| Monetization | — | Ad-supported |
| Size | 34 MB | 78 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Zhongke Ningxin Co., Ltd.](https://appshunter.io/developer/1475589505) | [志远 杨](https://appshunter.io/developer/1254338550) |

## What reviewers say

### 40hz灯

[App page](https://appshunter.io/ios/app/40hz/id1594573895)

**Features:** macOS Compatibility

**In-app purchases:** none


### Snap Timeline

[App page](https://appshunter.io/ios/app/snap-timeline-notes-taking/id6483687797)

Capture and save content from your phone screen instantly with a simple tap or button press. Intelligently extracts information from posts and videos, with options for tagging and highlighting key details. Includes helpful video tutorials.

**Highlights:** Instant screen capture shortcut, Intelligent content extraction, Link preview generation, Video title and thumbnail extraction, Customizable tagging, Home screen widgets

**In-app purchases:** none


## Frequently asked questions

### Is 40hz灯 free?

40hz灯 is free to download, with no in-app purchases.

### Is Snap Timeline free?

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

### Do 40hz灯 or Snap Timeline have ads?

Snap Timeline shows ads; 40hz灯 does not.

### Which is updated more often, 40hz灯 or Snap Timeline?

40hz灯 ships an update every 11 months, and Snap Timeline weekly. Most recently, 40hz灯 was updated on September 28, 2026 and Snap Timeline on September 20, 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.*