# OS Dynamo

> Activity and sleep tracker syncing with Oregon Scientific PE128 device. (iPhone/iPad app by Oregon Scientific Global Distribution Limited.)

- Source: https://appshunter.io/ios/app/os-dynamo/id660194536 (this page in markdown: same URL + `.md`)
- Developer: [Oregon Scientific Global Distribution Limited](https://appshunter.io/developer/545866912)
- Category: Health & Fitness
- Price: Free
- Rating: 3.00/5 from 1 App Store ratings · 25 written reviews indexed
- Age rating: 4+
- Requires: iOS 6.0 · 14 MB
- Languages: English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Chinese, Spanish and 1 more
- Released: 2013-06-26
- Data updated: 2026-06-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/os-dynamo/id660194536/reviews.md

## What is OS Dynamo?

Oregon Scientific TM Ssmart Dynamo 24/7 Activity Tracker (PE128), you’ve made the first step toward taking control of your all-day activities, whatever daytime or night. We hope it could help you easily acquire activity data and transfer it to your mobile app through Bluetooth Smart (Bluetooth Low Energy). From now on, you can easily and systematically track your activity volume and sleep quality on a daily basis. It helps you maintain motivation, it offers maximum comfy you can wear it round the clock.

Activity tracking:
Smart core collects your activity volume for analysis and then display the real-time data in the application. The activity tracker uses 3D sensor technology to count your activity volume to achieve 30 minutes a day or 150 minutes per week in total. Different colors of the indicator on the activity tracker represent different activity achievement.

Sleep monitoring:
The activity tracker can detect vibration during your sleeping and transfer the sleep status to the application for analysis. The application can graphically show your sleep status for review.

Social media sharing:
You can share the activity status both on facebook and twitter.

## Key features

- Activity tracking with 3D sensor
- Sleep monitoring and analysis
- Real-time data display
- Bluetooth Smart connectivity
- Social media sharing

## Recent user reviews (10 of 25)

All indexed reviews: https://appshunter.io/ios/app/os-dynamo/id660194536/reviews.md

### 2/5 — Needs improvement.

*2015-07-11, version 2.2.2*

I have many issues with the app/technology.
1.) I do an intense interval workout daily for 45min. This app only ever says I did 5 minutes of activity. Never even close to accurate.
2.) it says I am doing over 15,000 steps daily. I don't leave the house much. There is no way I am taking that many steps.
3.) The graph system is the only place I can recall older stats of steps and activity levels. Would be nice to just have an archive of the numbers.
I understand that you can't measure some of the things this thing does completely accurate. But this thing doesn't even get close to appropriate recordings. I hope it improves.

### 1/5 — Rubbish

*2015-03-17*

App won't open. Keeps crashing. Very disappointed

### 1/5 — Buyer beware

*2015-02-23*

Only synced once then app failed.total waste of time and money. Other reviewers are having the same problem but makers don't care and have not fixed any issues. I will be returning my ssmart watch. Buyer beware.

### 1/5 — Crashes

*2015-01-13*

As above fix it please 👎

### 1/5 — Dynamo app

*2015-01-02*

App won't load after syncing with myfitness app. Info not getting to the myfitness app at all!!

### 1/5 — Come on

*2014-12-28*

App wont open. Ios8 - iphone 6. Taking it back to retailer

### 2/5 — Almost there

*2014-12-26, version 2.2.1*

Good app, but exporting to mapmyfitness does not work. Looking forward to the update.

### 1/5 — Keeps crashing

*2014-12-25*

Can't open the app - keeps crashing 😞

### 1/5 — 앱이 다운되네요

*2014-12-09, version 2.2*

처음 설치하고 동작은 잘됩니다.
앱을 종료하고 다시켜면 안켜집니다. 확인부탁드립니다.
현재 재설치해서 다시 확인하고 있네요.

>> my fitness 연동설정하면 안켜집니다. 해결부탁합니다.

### 3/5 — App will not open

*2014-11-20*

I'm not sure if it's a coincidence but since I downloaded map my fitness app I have been unable to open the Dynamo app?!

## Frequently asked questions about OS Dynamo

### What devices does OS Dynamo support?

OS Dynamo is compatible with iPhone and iPod devices. It specifically syncs with the Oregon Scientific TM Ssmart Dynamo 24/7 Activity Tracker (PE128) via Bluetooth Smart.

### How does OS Dynamo track activity?

The app utilizes a 3D sensor from the connected activity tracker to count your steps and activity volume, helping you monitor progress towards daily and weekly goals.

### Can OS Dynamo monitor sleep?

Yes, OS Dynamo can detect vibrations during sleep via the connected tracker and transfer this data to the app for graphical analysis of your sleep status.

### Does OS Dynamo have ads?

Based on the provided information, OS Dynamo does not contain advertisements. It is a free application.

### How often is OS Dynamo updated?

The latest version of OS Dynamo is 2.2.3, which was released on November 30, 2015. The app has not received updates since then.

### What is the user rating for OS Dynamo?

OS Dynamo has a rating of 3.0 stars based on 1 review. This indicates a mixed reception from its limited user base.

### Can I share my activity data with others using OS Dynamo?

Yes, OS Dynamo allows you to share your activity status directly to Facebook and Twitter, enabling you to share your progress and achievements with your social networks.

### What is the age rating for OS Dynamo?

OS Dynamo has an age rating of 4+, making it suitable for a wide range of users. The app focuses on basic activity and sleep tracking.

## Version history (last 5 releases)

### 2.2.3 — 2015-11-30

This app has been updated by Apple to display the Apple Watch app icon.

Bug fix

### 2.2.2 — 2015-04-02

Fix app crash when MapMyFitness is turned on

### 2.2.1 — 2014-12-16

MapMyFitness fix

### 2.2 — 2014-10-29

Support Russian

### 2.1 — 2014-10-04

Compatible with iOS 8
Added Korean language

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## More apps by Oregon Scientific Global Distribution Limited

- [Ssmart Watch](https://appshunter.io/ios/app/ssmart-watch/id574691312)
- [Ssmart Blood Pressure Monitor](https://appshunter.io/ios/app/ssmart-blood-pressure-monitor/id718222536)
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- [Ssmart Fit](https://appshunter.io/ios/app/ssmart-fit/id888994150)

All apps by Oregon Scientific Global Distribution Limited: https://appshunter.io/developer/545866912

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-28.*