# DieselOn vs No DNF

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.

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.

## The numbers

| Metric | DieselOn | No DNF |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.7 (349 ratings)](https://appshunter.io/ios/app/dieselon/id1156389971/reviews)** | — |
| Number of ratings | **349** | — |
| Positive reviews | 37.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | **Free** | Paid |
| Size | 243 MB | 30 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fossil, Inc.](https://appshunter.io/developer/403955532) | [Oleksandr Kazimirchuk](https://appshunter.io/developer/1730603170) |

## What reviewers say

### DieselOn

[App page](https://appshunter.io/ios/app/dieselon/id1156389971)

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

**In-app purchases:** none


### No DNF

[App page](https://appshunter.io/ios/app/no-dnf/id6477801670)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*