# Premix Calculator (2 Stroke) vs TwoStrokeRatio

The clearest difference is in-app purchases: TwoStrokeRatio at none against Premix Calculator (2 Stroke)'s 1. Premix Calculator (2 Stroke)'s advantage is ads (none vs shown) and iOS requirement (13.0 vs 16.4). On price, update cadence and device support there is nothing between them.

Both are free to download. Premix Calculator (2 Stroke) sells 1 one-off in-app purchase. TwoStrokeRatio asks for nothing beyond the download.

Premix Calculator (2 Stroke) ships an update every 3 months, TwoStrokeRatio every 2 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Premix Calculator (2 Stroke) | TwoStrokeRatio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (11 ratings)](https://appshunter.io/ios/app/premix-calculator-2-stroke/id6749201236/reviews)** | — |
| Number of ratings | **11** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 4 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +17 | 4+ |
| Developer | [Arsosa Network Inc.](https://appshunter.io/developer/1209042440) | [Tomasz Bramson](https://appshunter.io/developer/6786572854) |

## What reviewers say

### Premix Calculator (2 Stroke)

[App page](https://appshunter.io/ios/app/premix-calculator-2-stroke/id6749201236)

Easily calculate the correct fuel-to-oil ratio for your 2-stroke engine. Input your desired mix and fuel amount to get the precise oil quantity needed, preventing engine damage and ensuring smooth operation. Includes helpful articles and guides.

**Highlights:** Calculate optimal fuel-to-oil mix ratio, Use premix chart for quick oil quantity lookup, Read informative articles on 2-stroke premixing, Eliminate guesswork in fuel mixing, Prevent engine damage

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads Forever | $3.99 | one-time |


### TwoStrokeRatio

[App page](https://appshunter.io/ios/app/twostrokeratio/id6786572851)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Premix Calculator (2 Stroke) free?

Premix Calculator (2 Stroke) is free to download, with in-app purchases available.

### Is TwoStrokeRatio free?

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

### Do Premix Calculator (2 Stroke) or TwoStrokeRatio have ads?

TwoStrokeRatio shows ads; Premix Calculator (2 Stroke) does not.

### Which is updated more often, Premix Calculator (2 Stroke) or TwoStrokeRatio?

Premix Calculator (2 Stroke) ships an update every 3 months, and TwoStrokeRatio every 2 months. Most recently, Premix Calculator (2 Stroke) was updated on October 30, 2026 and TwoStrokeRatio on October 25, 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.*