# 随声练 vs HIIT Trainer

随声练 and HIIT Trainer are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 随声练 | HIIT Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Size | 1 MB | 14 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [永强 李](https://appshunter.io/developer/1629439485) | [巧 唐](https://appshunter.io/developer/6790363579) |

## What reviewers say

### 随声练

[App page](https://appshunter.io/ios/app/id6757973387)

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

**In-app purchases:** none


### HIIT Trainer

[App page](https://appshunter.io/ios/app/hiit-trainer-interval-timer/id6790511820)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 随声练 free?

随声练 is free to download, with no in-app purchases.

### Is HIIT Trainer free?

HIIT Trainer is free to download, with no in-app purchases.

### Do 随声练 or HIIT Trainer have ads?

Neither 随声练 nor HIIT Trainer shows ads.

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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.*