# CalcApp vs 油迹Pro

The clearest difference is price: CalcApp at Free against 油迹Pro's $0.99. CalcApp also leads on review sentiment (75% vs 67%). 油迹Pro's advantage is in-app purchases (none vs 2). On update cadence, ads, device support and iOS requirement there is nothing between them.

CalcApp is free to download; 油迹Pro costs $0.99 up front. CalcApp sells 2 one-off in-app purchases. 油迹Pro asks for nothing beyond the download.

CalcApp ships an update every 3 weeks, 油迹Pro every 2 weeks. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | CalcApp | 油迹Pro |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.6 (19 ratings)](https://appshunter.io/ios/app/calcapp-simple-calculator/id1211638570/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | **75.0% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | **Free** | Paid |
| Size | 4 MB | 5 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [尉 张](https://appshunter.io/developer/1211638569) | [熵析云枢网络科技](https://appshunter.io/developer/1873311794) |

## What reviewers say

### CalcApp

[App page](https://appshunter.io/ios/app/calcapp-simple-calculator/id1211638570)

This app combines basic arithmetic, scientific functions, programmer conversions, and unit conversions into a single, easy-to-use tool. It automatically saves all your calculations to a history log, ensuring you never lose important data.

**Highlights:** Basic Arithmetic, Scientific Calculator, Programmer Mode, Unit Converter, History Tracking

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $0.99 | one-time |
| Annual Subscription | $1.99 | one-time |


### 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


## Frequently asked questions

### Is CalcApp free?

CalcApp is free to download, with in-app purchases available.

### Is 油迹Pro free?

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

### Do CalcApp or 油迹Pro have ads?

Neither CalcApp nor 油迹Pro shows ads.

### Which is updated more often, CalcApp or 油迹Pro?

CalcApp ships an update every 3 weeks, and 油迹Pro every 2 weeks. Most recently, CalcApp was updated on October 2, 2026 and 油迹Pro on October 1, 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.*