# One vs Clark Propane

One and Clark Propane are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

One ships an update every 8 months, Clark Propane every 6 months. The most recent releases landed on September 22, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | One | Clark Propane |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 months** |
| Size | 42 MB | 56 MB |
| Requires iOS | **12.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [William Stomp](https://appshunter.io/developer/1170051251) | [Rural Computer Consultants, Inc.](https://appshunter.io/developer/640795441) |

## What reviewers say

### One

[App page](https://appshunter.io/ios/app/one-tank/id1506540155)

**Features:** macOS Compatibility

**In-app purchases:** none


### Clark Propane

[App page](https://appshunter.io/ios/app/clark-propane/id6502298061)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One free?

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

### Is Clark Propane free?

Clark Propane is free to download, with no in-app purchases.

### Do One or Clark Propane have ads?

Neither One nor Clark Propane shows ads.

### Which is updated more often, One or Clark Propane?

One ships an update every 8 months, and Clark Propane every 6 months. Most recently, One was updated on September 22, 2026 and Clark Propane on September 8, 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.*