# TuOne vs NB科学领航

The clearest difference is iOS requirement: NB科学领航 at 15.0 against TuOne's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. TuOne sells 10 one-off in-app purchases and NB科学领航 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

TuOne ships an update every 4 days, NB科学领航 weekly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | TuOne | NB科学领航 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 509 MB | 85 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [向煊 龙](https://appshunter.io/developer/1889719996) | [BeiJing LeBu Educational Technology Co., Ltd.](https://appshunter.io/developer/943806906) |

## What reviewers say

### TuOne

[App page](https://appshunter.io/ios/app/tuone/id6761455411)

Learn new facts and historical details through quick, two-choice questions. Get instant feedback and track your progress as you expand your knowledge base. Ideal for learning on the go without lengthy study sessions.

**Highlights:** Two-choice questions, Instant answers and explanations, Chinese history content, General knowledge topics, Progress tracking, Timelines and maps, Customizable question sets

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 宋·青黛 | $1.99 | one-time |
| 五代十国·绛灰 | $1.99 | one-time |
| 清·青乳 | $1.99 | one-time |
| 文学·金褐蓝 | $1.99 | one-time |
| 明·赤正 | $1.99 | one-time |
| 元·白藏 | $1.99 | one-time |
| 民国·朱蓝 | $1.99 | one-time |
| 谜趣·黛金 | $1.99 | one-time |
| 三国·朱砂黑 | $1.99 | one-time |
| 360行·钢琥 | $1.99 | one-time |


### NB科学领航

[App page](https://appshunter.io/ios/app/nb/id6802954956)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 科学领航课·启蒙 | $39.99 | one-time |
| 科学领航课·探索 | $39.99 | one-time |
| 科学领航课·突破 | $59.99 | one-time |


## Frequently asked questions

### Is TuOne free?

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

### Is NB科学领航 free?

NB科学领航 is free to download, with in-app purchases available.

### Do TuOne or NB科学领航 have ads?

Neither TuOne nor NB科学领航 shows ads.

### Which is updated more often, TuOne or NB科学领航?

TuOne ships an update every 4 days, and NB科学领航 weekly. Most recently, TuOne was updated on October 24, 2026 and NB科学领航 on October 25, 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.*