# 私教备考助手AI版 ACE vs Kine

The clearest difference is review sentiment: Kine at 100% against 私教备考助手AI版 ACE's 0%. Kine also leads on update cadence (fortnightly vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 私教备考助手AI版 ACE sells 2 one-off in-app purchases and Kine sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

私教备考助手AI版 ACE ships an update every 3 months, Kine fortnightly. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 私教备考助手AI版 ACE | Kine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/kine/id6761748072/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 67 MB | 12 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [斌 张](https://appshunter.io/developer/1500701617) | [定波 刘](https://appshunter.io/developer/1891223422) |

## What reviewers say

### 私教备考助手AI版 ACE

[App page](https://appshunter.io/ios/app/ai-ace/id1521113505)

Access a comprehensive collection of 1164 practice questions with detailed explanations. This resource is designed to aid in preparation for professional certifications. Download and start practicing today.

**Highlights:** 1164 practice questions, Detailed explanations for all questions, AI-powered assistance, Exam preparation tool, Available on iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁Pro版 | $0.99 | one-time |
| 解锁Max版 | $4.99 | one-time |


### Kine

[App page](https://appshunter.io/ios/app/kine/id6761748072)

This app provides a comprehensive dashboard for Apple Watch users, consolidating heart rate, sleep, activity, and HRV data. It offers actionable insights into performance, recovery, and training rhythm, with features like live heart-rate feedback and recovery prompts.

**Highlights:** Body-state dashboard, Heart rate and HRV tracking, Sleep and activity trends, Live workout heart-rate feedback, Recovery prompts, 24-hour body-dynamics challenges

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kine Pro Monthly | $1.99 | per month |
| Kine Pro yearly | $12.99 | per year |
| Kine Pro Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is 私教备考助手AI版 ACE free?

私教备考助手AI版 ACE is free to download, with in-app purchases available.

### Is Kine free?

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

### Do 私教备考助手AI版 ACE or Kine have ads?

Neither 私教备考助手AI版 ACE nor Kine shows ads.

### Which is updated more often, 私教备考助手AI版 ACE or Kine?

私教备考助手AI版 ACE ships an update every 3 months, and Kine fortnightly. Most recently, 私教备考助手AI版 ACE was updated on October 19, 2026 and Kine 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.*