Comparison

DieselOn vs No DNF

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

DieselOn3 screens
No DNF3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

DieselOn ships an update every 2 months, No DNF every 12 months. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
DieselOn versus No DNF: the parameters behind the verdict, then further details
ParameterDieselOnNo DNF
PriceFree — better$0.99
Rating4.7 (349 ratings) — better—
Positive reviews37.9% of reviews100.0% of reviews — better
Number of ratings349 — better—
Update frequencyEvery 2 months — betterEvery 12 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size243 MB30 MB
Age rating4+4+
DeveloperFossil, Inc.Oleksandr Kazimirchuk

Customer experience

DieselOn

All ratings292 ratings
Positive91.1%
Neutral2.7%
Negative6.2%
Written reviews140 reviews
Positive37.9%
Neutral17.9%
Negative44.3%

No DNF

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

DieselOn

No in-app purchases

None

No DNF

No in-app purchases

Questions

Is DieselOn free?
DieselOn is free to download, with no in-app purchases.
Is No DNF free?
No DNF costs $0.99, with no in-app purchases.
Do DieselOn or No DNF have ads?
Neither DieselOn nor No DNF shows ads.
Which is updated more often, DieselOn or No DNF?
DieselOn ships an update every 2 months, and No DNF every 12 months. Most recently, DieselOn was updated on October 24, 2026 and No DNF on October 24, 2026.

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