# Refuel Log vs Next Level Systems

The clearest difference is iOS requirement: Next Level Systems at 15.6 against Refuel Log's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Refuel Log | Next Level Systems |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 4 MB | 3 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Florian Toenz](https://appshunter.io/developer/1598410220) | [Next Level Systems GmbH](https://appshunter.io/developer/1804878050) |

## What reviewers say

### Refuel Log

[App page](https://appshunter.io/ios/app/refuel-log/id1598410218)

**In-app purchases:** none


### Next Level Systems

[App page](https://appshunter.io/ios/app/next-level-systems/id6743842535)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Refuel Log free?

Refuel Log is free to download, with no in-app purchases.

### Is Next Level Systems free?

Next Level Systems is free to download, with no in-app purchases.

### Do Refuel Log or Next Level Systems have ads?

Neither Refuel Log nor Next Level Systems shows ads.

### Which is updated more often, Refuel Log or Next Level Systems?

Refuel Log ships an update every 2 months, and Next Level Systems every 2 months. Most recently, Refuel Log was updated on October 10, 2026 and Next Level Systems on September 30, 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.*