# DieselOn

> Diesel On smartwatch companion app for customization, notifications, and fitness tracking. (iPhone/iPad app by Fossil, Inc..)

- Source: https://appshunter.io/ios/app/dieselon/id1156389971 (this page in markdown: same URL + `.md`)
- Developer: [Fossil, Inc.](https://appshunter.io/developer/403955532)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Rating: 4.60/5 from 292 App Store ratings · 140 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 243 MB
- Languages: American English, Czech, Danish, Dutch, Canadian French, German (Germany), Indonesian, Italian, Japanese, Korean and 11 more
- Released: 2016-10-24
- Data updated: 2026-08-20
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/dieselon/id1156389971/reviews.md

## What is DieselOn?

Introducing the new Diesel On smartphone app designed to enhance your smartwatch experience. From unique watch faces to notifications with a twist, customize your experience at your fingertips.
DieselOn is a companion app which offers a wide range of features related to fitness and connected to your smartphone.
Supported Diesel smartwatches: Gen 6 wearOS and Hybrid smartwatches.
Following are the core features which are essential parts to form up this app:
Pair/ activate all Diesel smartwatches with your smartphone.
Show notifications of incoming calls and messages of your phone on your watches.
Show notification from other applications of your phone on your watches.
Find your smartwatches based on the last location of your device.
Get real-time weather information based on your current location.
Track steps, distance, calories burned and sleep quality.
Track heart rate and keep track of your blood oxygen level.
Connect to voice assistant services.

## Key features

- Unique watch faces
- Customizable notifications
- Fitness tracking (steps, calories, sleep)
- Heart rate and blood oxygen monitoring
- Real-time weather updates
- Find your smartwatch feature
- Voice assistant integration

## Recent user reviews (10 of 140)

All indexed reviews: https://appshunter.io/ios/app/dieselon/id1156389971/reviews.md

### 5/5 — Muy bueno

*2026-06-14, version 5.1.15*

Cool

### 5/5 — Diesel

*2025-12-05, version 5.1.15*

Bien cordialement

### 5/5 — Having issues

*2025-09-05, version 5.1.15*

Since iOS 18.6 etc I’m having trouble keeping my watch connected to my iPhone 16 pro max 18.6.2.  Via the app. 

Great app easy to use with my Diesel Hybrid DZT1000 keep up the good work devs

### 5/5 — Languages

*2025-05-17, version 5.1.15*

Please Ukrainian language

### 1/5 — Orologio non sincronizza più

*2025-05-14, version 5.1.15*

Un disastro non funziona più la sincronizzazione per vedere sulla app i passi e altre informazioni

### 3/5 — Додайте Українську мову

*2025-04-22, version 5.1.15*

Додайте Українську мову

### 3/5 — Додайте українську мову будь ласка

*2025-04-08, version 5.1.15*

Додайте українську мову. Дякую!

### 5/5 — Happy customer

*2024-10-21, version 5.1.11*

Happy customer

### 1/5 — Falla la conexión

*2024-08-03, version 5.1.11*

Falla mucho la conexión al usarse con IPhone.

### 2/5 — Dee

*2024-06-24, version 5.1.6*

Worked alright (not great) until I got a new iPhone 14 now it won’t connect with phone nor watch and can’t log in because it won’t send code in email quick enough. Absolutely useless to me now. This possibly could fall more on Apple because it is not the only thing to trouble me with this new phone. Idk what to do to be able to use now.

## Frequently asked questions about DieselOn

### What does the DieselOn app do?

The DieselOn app is designed to enhance your Diesel smartwatch experience. It allows you to pair and activate your smartwatch with your smartphone, customize watch faces, and receive notifications from your phone and other applications directly on your watch.

### What are the key features of the DieselOn app?

Key features include pairing Diesel smartwatches, displaying phone notifications, finding your watch via last known location, real-time weather updates, tracking fitness metrics like steps, calories, and sleep, monitoring heart rate and blood oxygen, and connecting to voice assistants.

### Is the DieselOn app free to use?

Yes, the DieselOn app is free to download and use. The provided information indicates no in-app purchases or advertisements, suggesting a completely free experience for users.

### Which Diesel smartwatches are supported by the DieselOn app?

The DieselOn app supports Diesel Gen 6 wearOS smartwatches and Diesel Hybrid smartwatches. Ensure your device is one of these models to utilize the app's full functionality.

### How can I use the DieselOn app for fitness tracking?

The app allows you to track essential fitness metrics directly from your compatible Diesel smartwatch. This includes monitoring your daily steps, the distance you've covered, calories burned, and your sleep quality. It also tracks your heart rate and blood oxygen levels.

## Version history (last 5 releases)

### 5.1.15 — 2025-04-08

Bug fixes and Performance enhancement

### 5.1.11 — 2024-06-24

Bug fixes and Performance enhancement

### 5.1.6 — 2023-06-19

Bug fixes and Performance enhancement

### 5.1.3 — 2023-02-27

Bug fixes and Performance enhancement

### 5.1.2 — 2022-12-16

Bug fixes and Performance enhancement

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## More apps by Fossil, Inc.

- [Fossil Smartwatches](https://appshunter.io/ios/app/fossil-smartwatches/id1027370544)
- [Skagen Smartwatches](https://appshunter.io/ios/app/skagen-smartwatches/id1136626568)
- [Fossil Stickers](https://appshunter.io/ios/app/fossil-stickers/id1161245408)
- [Fossil Q Legacy](https://appshunter.io/ios/app/fossil-q-legacy/id1266525345)

All apps by Fossil, Inc.: https://appshunter.io/developer/403955532

## Related topics

[diesel](https://appshunter.io/ios/topics/diesel)

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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 2026-08-20.*