# 油迹Pro vs Calculator Sci Unit Converter

The clearest difference is review sentiment: 油迹Pro at 67% against Calculator Sci Unit Converter's 0%. 油迹Pro also leads on price ($0.99 vs $1.99). Calculator Sci Unit Converter's advantage is iOS requirement (13.0 vs 17.0). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

油迹Pro costs $0.99 and Calculator Sci Unit Converter $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

油迹Pro ships an update every 2 weeks, Calculator Sci Unit Converter monthly. The most recent releases landed on August 2, 2026 and July 26, 2026 respectively.

## The numbers

| Metric | 油迹Pro | Calculator Sci Unit Converter |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | — | **[4.0 (2 ratings)](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Paid | Paid |
| Size | 5 MB | 25 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [熵析云枢网络科技](https://appshunter.io/developer/1873311794) | [厦门市凡游网络科技有限公司](https://appshunter.io/developer/1842524161) |

## What reviewers say

### 油迹Pro

[App page](https://appshunter.io/ios/app/pro/id6758520192)

This app helps car owners manage their fuel and charging expenses with intuitive logging and smart analysis. Track your driving costs, understand fuel consumption patterns, and visualize your energy spending trends. It offers ad-free, privacy-focused data management for multiple vehicles.

**Highlights:** Record fuel and charging transactions, Track fuel consumption and costs, Visualize energy usage trends, Manage multiple vehicles, Cloud synchronization, Ad-free experience, Data privacy protection

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

**In-app purchases:** none


### Calculator Sci Unit Converter

[App page](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667)

This app offers a robust calculator with both standard and scientific functions. It includes a unit converter for various measurements and currency, plus helpful shortcuts for percentages, taxes, and tips. All calculations are saved locally for easy access.

**Highlights:** Standard and scientific calculator modes, Unit conversion for length, weight, temperature, currency, Full calculation history log, Percentage, tax, and tip calculation shortcuts, Offline functionality, Optimized for phone and tablet

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

**In-app purchases:** none


## Frequently asked questions

### Is 油迹Pro free?

油迹Pro costs $0.99, with no in-app purchases.

### Is Calculator Sci Unit Converter free?

Calculator Sci Unit Converter costs $1.99, with no in-app purchases.

### Do 油迹Pro or Calculator Sci Unit Converter have ads?

Neither 油迹Pro nor Calculator Sci Unit Converter shows ads.

### Which is updated more often, 油迹Pro or Calculator Sci Unit Converter?

油迹Pro ships an update every 2 weeks, and Calculator Sci Unit Converter monthly. Most recently, 油迹Pro was updated on August 2, 2026 and Calculator Sci Unit Converter on July 26, 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.*