# Nuclides vs 第一次遇见科学

The clearest difference is iOS requirement: 第一次遇见科学 at 12.0 against Nuclides's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Nuclides sells 2 in-app purchases, starting at $0.99 per month and 第一次遇见科学 sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Nuclides ships an update every 2 weeks, 第一次遇见科学 every 3 weeks. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Nuclides | 第一次遇见科学 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 128 MB | 76 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [建锋 宋](https://appshunter.io/developer/1098794568) | [Shanghai Juvenile & Children's Publishing House Co., Ltd](https://appshunter.io/developer/1449920791) |

## What reviewers say

### Nuclides

[App page](https://appshunter.io/ios/app/nuclides/id1098794569)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription · Monthly | $0.99 | per month |
| Premium Subscription · Yearly | $9.99 | per year |


### 第一次遇见科学

[App page](https://appshunter.io/ios/app/id6474520623)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6阅读币 | $0.99 | one-time |
| 1阅读币 | $0.99 | one-time |
| 12阅读币 | $1.99 | one-time |
| 25阅读币 | $3.99 | one-time |


## Frequently asked questions

### Is Nuclides free?

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

### Is 第一次遇见科学 free?

第一次遇见科学 is free to download, with in-app purchases available.

### Do Nuclides or 第一次遇见科学 have ads?

Neither Nuclides nor 第一次遇见科学 shows ads.

### Which is updated more often, Nuclides or 第一次遇见科学?

Nuclides ships an update every 2 weeks, and 第一次遇见科学 every 3 weeks. Most recently, Nuclides was updated on October 11, 2026 and 第一次遇见科学 on October 10, 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.*