# 思明堂数学 vs Lighting Friendly

The clearest difference is in-app purchases: 思明堂数学 at none against Lighting Friendly's 1. Lighting Friendly's advantage is update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Lighting Friendly sells 1 in-app purchase, starting at $8.99 per year. 思明堂数学 asks for nothing beyond the download.

思明堂数学 ships an update every 2 months, Lighting Friendly every 2 days. The most recent releases landed on October 11, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | 思明堂数学 | Lighting Friendly |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 106 MB | 5 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [上海思明堂生物科技股份有限公司](https://appshunter.io/developer/1219886529) | [jian-nan lan](https://appshunter.io/developer/6803885361) |

## What reviewers say

### 思明堂数学

[App page](https://appshunter.io/ios/app/id6777937505)

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

**In-app purchases:** none


### Lighting Friendly

[App page](https://appshunter.io/ios/app/lighting-friendly-led-screen/id6803885359)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lighting Friendly Annual | $8.99 | per year |


## Frequently asked questions

### Is 思明堂数学 free?

思明堂数学 is free to download, with no in-app purchases.

### Is Lighting Friendly free?

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

### Do 思明堂数学 or Lighting Friendly have ads?

Neither 思明堂数学 nor Lighting Friendly shows ads.

### Which is updated more often, 思明堂数学 or Lighting Friendly?

思明堂数学 ships an update every 2 months, and Lighting Friendly every 2 days. Most recently, 思明堂数学 was updated on October 11, 2026 and Lighting Friendly on October 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.*