DieselOn vs No DNF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DieselOn
Enhance your smartwatch experience with unique watch faces and customizable notifications. This companion app connects to your smartphone to offer fitness tracking, real-time weather, and more.
- 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
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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.
No DNF
Plan and execute ultrarunning race strategies with detailed aid station management, multiple pacing options, and real-time tracking. Offers dynamic timeline views and adjustable pace calculations for various race distances and durations.
- Customizable race and aid station layout
- Dual pacing plans (goal & backup)
- Real-time ETA and pace adjustments
- Dynamic leg-by-leg timeline view
- Min/km or min/mi pace display
- Dark mode optimization
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Ultra Pace Planner: Your Smart Strategy Tool for Ultramarathons Conquer your next ultra with confidence. Ultra Pace Planner is built specifically for ultrarunners who need more than basic pace math — plan multi-hour races with aid stations, refueling and cut-offs. Key Features: - Create your own distance + aid station layout. - Multiple Pacing Plans — Set Plan A (aggressive goal) and Plan B (backup/safety). Easily adjust total time in hours & minutes with intuitive sliders. - Real-Time Race Tracking — Update progress at any point → get instant ETA to next aid station, remaining time, refuel reminders, and adjusted pace required. - Dynamic Timeline View — Scrollable leg-by-leg breakdown: arrival/departure times per aid station, moving time, refuel stops (e.g., 1-10 min), cumulative distance, and heart icons for medical/crew notes. - Pace in min/km or min/mi — Switch units seamlessly; shows current required pace to hit your plan. - Edit Start Time & Hold to Exit — Fine-tune race morning or pause tracking without losing data. - Dark mode optimized for low-light race starts and long efforts. Whether you're targeting a fast 50-miler, surviving a 100K trail grind, or pacing your first 24-hour event, this app keeps your strategy on track — from pre-race planning to mid-race decisions. No more spreadsheets or guesswork. Input your race, set plans, and execute with precision. Download now and turn your ultra dream into a calculated finish.
Screenshots
Verdict
The clearest difference is review sentiment: No DNF at 100% against DieselOn's 38%. DieselOn's advantage is price (Free vs $0.99) and update cadence (every 2 months vs every 12 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
DieselOn is free to download; No DNF costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
DieselOn ships an update every 2 months, No DNF every 12 months. Both last shipped on October 24, 2026.
| Parameter | DieselOn | No DNF |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.7 (349 ratings) — better | — |
| Positive reviews | 37.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 349 — better | — |
| Update frequency | Every 2 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 243 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Fossil, Inc. | Oleksandr Kazimirchuk |
Customer experience
DieselOn
No DNF
In-app purchases
DieselOn
No in-app purchases
No DNF
No in-app purchases









