# Fitsright vs Sineco

The clearest difference is in-app purchases: Fitsright at none against Sineco's 2. Sineco's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Sineco sells 2 in-app purchases, starting at $7.99 per month. Fitsright asks for nothing beyond the download.

Fitsright ships an update every 9 days, Sineco every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Fitsright | Sineco |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sineco/id6785854159/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | — | Subscription |
| Size | 142 MB | 70 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Fits Right](https://appshunter.io/developer/1665169199) | [Sineco](https://appshunter.io/developer/1852718421) |

## What reviewers say

### Fitsright

[App page](https://appshunter.io/ios/app/fitsright/id1665169197)

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

**In-app purchases:** none


### Sineco

[App page](https://appshunter.io/ios/app/sineco/id6785854159)

This app uses your heart rate to dynamically adjust music intensity in real-time during workouts. It supports various activities and integrates with wearables to personalize your exercise experience.

**Highlights:** Real-time heart rate integration, Music intensity adapts to workout, Supports 14+ activities, Apple Watch and Garmin support, Personalized music genres, Workout history tracking

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sineco Premium | $7.99 | per month |
| Sineco Premium | $79.99 | per year |


## Frequently asked questions

### Is Fitsright free?

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

### Is Sineco free?

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

### Do Fitsright or Sineco have ads?

Fitsright shows ads; Sineco does not.

### Which is updated more often, Fitsright or Sineco?

Fitsright ships an update every 9 days, and Sineco every 2 weeks. Most recently, Fitsright was updated on November 3, 2026 and Sineco on October 31, 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.*