# Dynamo vs Sineco

The clearest difference is rating: Dynamo at 5.0 against Sineco's 1.0. Dynamo also leads on monetization model (freemium vs subscription) and ratings volume (4 vs 1). Sineco's advantage is device support (4 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Dynamo sells 2 in-app purchases, starting at $2.99 per month and Sineco sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Dynamo holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

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

## The numbers

| Metric | Dynamo | Sineco |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/dynamo-rewards-for-steps/id1592129549/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/sineco/id6785854159/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | **Freemium** | Subscription |
| Size | 68 MB | 70 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Dynamo Rewards Ltd](https://appshunter.io/developer/1592129551) | [Sineco](https://appshunter.io/developer/1852718421) |

## What reviewers say

### Dynamo

[App page](https://appshunter.io/ios/app/dynamo-rewards-for-steps/id1592129549)

This app tracks your daily steps, helping you achieve fitness goals while contributing to environmental causes. Earn rewards and discounts by walking, and even plant trees with your activity.

**Highlights:** Daily step tracking, Plant trees with steps, Earn rewards and discounts, Monthly cash raffles, Syncs with Apple Health, Battery-friendly tracking

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dynamo Premium | $2.99 | per month |
| Dynamo Premium | $19.99 | per year |


### 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 Dynamo free?

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

### Is Sineco free?

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

### Which has better reviews, Dynamo or Sineco?

Dynamo is rated higher. Dynamo averages 5.0 out of 5 from 4 ratings, while Sineco averages 1.0 from 1 ratings.

### Do Dynamo or Sineco have ads?

Neither Dynamo nor Sineco shows ads.

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

Dynamo ships an update weekly, and Sineco every 2 weeks. Most recently, Dynamo 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.*