# OneGrow vs 天天长高

The clearest difference is monetization model: 天天长高 at free with in-app purchases against OneGrow's subscription. 天天长高 also leads on review sentiment (57% vs 27%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. OneGrow sells 3 in-app purchases, starting at $0.99 per month and 天天长高 sells 7 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | OneGrow | 天天长高 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/id6450284872/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 27.3% of reviews | **57.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 62 MB | 71 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu Reinvent Technology Co., Ltd.](https://appshunter.io/developer/1250290964) | [Chongqing Caochen Technology Co., Ltd.](https://appshunter.io/developer/1227265173) |

## What reviewers say

### OneGrow

[App page](https://appshunter.io/ios/app/onegrow-child-growth-tracker/id1601581768)

Easily track and visualize your child's growth milestones with detailed charts and WHO standards. Securely store data, collaborate with family, and monitor development trends.

**Highlights:** Record growth data for multiple children, Track height, weight, and head circumference, Automatic BMI calculation, View growth history with abnormal indicator highlights, Export records for sharing, Utilize WHO Child Growth Standards, Invite family for collaborative editing

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Monthly) | $0.99 | per month |
| Pro (Yearly) | $5.99 | per year |
| Pro (Lifetime) | $14.99 | one-time |


### 天天长高

[App page](https://appshunter.io/ios/app/id6450284872)

This app offers AI-powered height assessments and personalized exercise plans for children aged 3-18. It provides over ten types of workouts, including Tabata and Pilates, to support growth, posture correction, and fitness. The app aims to help children reach their full height potential and improve overall health.

**Highlights:** AI-powered height assessment, Personalized exercise plans (3-18 years), 10+ workout types (Tabata, Pilates), Posture correction and fitness tracking, Long-term training programs, Intelligent plan adjustments

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $2.99 | per month |
| 连续包月 | $3.99 | per month |
| 连续包月 | $5.99 | per month |
| 1年会员 | $14.99 | one-time |
| 1年会员 | $29.99 | one-time |
| 1年会员 | $59.99 | one-time |
| 100年会员 | $599.99 | one-time |


## Frequently asked questions

### Is OneGrow free?

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

### Is 天天长高 free?

天天长高 is free to download, with in-app purchases available.

### Do OneGrow or 天天长高 have ads?

Neither OneGrow nor 天天长高 shows ads.

### Which is updated more often, OneGrow or 天天长高?

OneGrow ships an update every 3 weeks, and 天天长高 every 3 weeks. Most recently, OneGrow was updated on November 3, 2026 and 天天长高 on November 7, 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.*