# YYi Calculator vs TacRight

The clearest difference is in-app purchases: YYi Calculator at none against TacRight's 4. TacRight's advantage is update cadence (every 4 days vs every 8 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. TacRight sells 4 in-app purchases, starting at $2.99 per 7 days. YYi Calculator asks for nothing beyond the download.

YYi Calculator ships an update every 8 days, TacRight every 4 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | YYi Calculator | TacRight |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (4 ratings)](https://appshunter.io/ios/app/tacright/id6804881760/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 6 MB | 99 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [才新 高](https://appshunter.io/developer/6797358616) | [RYLEN LEO THOMPSON](https://appshunter.io/developer/6798464313) |

## What reviewers say

### YYi Calculator

[App page](https://appshunter.io/ios/app/yyi-calculator/id6797376510)

**Features:** Vision Pro support

**In-app purchases:** none


### TacRight

[App page](https://appshunter.io/ios/app/tacright/id6804881760)

Streamline your business operations by creating detailed quotes, managing jobs from start to finish, and generating professional invoices. Track expenses, labor, and profit with AI-assisted receipt scanning and a comprehensive material catalog. Gain valuable business insights to optimize performance.

**Highlights:** Detailed quote building, Job tracking from quote to completion, Professional PDF generation, Expense recording with AI receipt scanning, Material and fastener catalog, Labor and profit tracking, Business insights and performance review

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TacRight Pro Weekly | $2.99 | per 7 days |
| TacRight Pro Monthly | $9.99 | per month |
| TacRight Pro Monthly | $14.99 | per month |
| TacRight Pro Annual | $99.99 | per year |


## Frequently asked questions

### Is YYi Calculator free?

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

### Is TacRight free?

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

### Do YYi Calculator or TacRight have ads?

Neither YYi Calculator nor TacRight shows ads.

### Which is updated more often, YYi Calculator or TacRight?

YYi Calculator ships an update every 8 days, and TacRight every 4 days. Most recently, YYi Calculator was updated on November 6, 2026 and TacRight on October 31, 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.*