# PerfectCalc vs PaceScan

The clearest difference is ads: PaceScan at none against PerfectCalc's shown. PaceScan also leads on rating (5.0 vs 4.7). PerfectCalc's advantage is ratings volume (351 vs 1) and iOS requirement (13 vs 15.5). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. PerfectCalc sells 1 one-off in-app purchase and PaceScan sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PaceScan holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: PerfectCalc has 351 ratings behind it against 1, so its average is the more settled of the two.

PerfectCalc ships an update every 9 days, PaceScan weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PerfectCalc | PaceScan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (351 ratings)](https://appshunter.io/ios/app/perfectcalc-calculator-suite/id1561702545/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pacescan-pdf-scanner-and-ocr/id6787064497/reviews)** |
| Number of ratings | **351** | 1 |
| Positive reviews | 94.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 77 MB | 206 MB |
| Requires iOS | **13** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [明星 王](https://appshunter.io/developer/1872854947) | [Nanjing Baoluan Information Technology Co., Ltd.](https://appshunter.io/developer/6778732156) |

## What reviewers say

### PerfectCalc

[App page](https://appshunter.io/ios/app/perfectcalc-calculator-suite/id1561702545)

This app offers both basic and advanced scientific calculations with a user-friendly interface. It allows for real-time editing of calculations, history management, and theme customization.

**Highlights:** Basic and scientific calculations, Trigonometric and inverse trigonometric functions, Mathematical functions (abs, ceil, floor, round), Real-time calculation editing, Historical records management, Bright and dark theme switching

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator Pro | $19.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Powerful features
- 💡 Useful history function
- 🔒 No ads
- 👍 Clean interface

**What reviewers complain about**

- 🐛 Forced 5-star review for history function
- 🐛 Odd language issue with copied calculations

**Reported bugs**

- Forced 5-star review for history function
- Odd language issue with copied calculations

**Requested features**

- Dark mode option
- More customization options


### PaceScan

[App page](https://appshunter.io/ios/app/pacescan-pdf-scanner-and-ocr/id6787064497)

Transform your device into a private document scanner. Capture, convert, and edit PDFs with OCR text extraction. Organize, protect, and share your scanned documents locally without an account.

**Highlights:** Document scanning with auto edge detection, OCR for text extraction, PDF conversion and editing, Password protection for PDFs, Local-first document library, No account required

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| weekly | $4.99 | per 7 days |
| Monthly | $9.99 | per month |
| Yearly | $59.99 | per year |


## Frequently asked questions

### Is PerfectCalc free?

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

### Is PaceScan free?

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

### Which has better reviews, PerfectCalc or PaceScan?

PaceScan is rated higher. PerfectCalc averages 4.7 out of 5 from 351 ratings, while PaceScan averages 5.0 from 1 ratings.

### Do PerfectCalc or PaceScan have ads?

PerfectCalc shows ads; PaceScan does not.

### Which is updated more often, PerfectCalc or PaceScan?

PerfectCalc ships an update every 9 days, and PaceScan weekly. Most recently, PerfectCalc was updated on November 3, 2026 and PaceScan 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.*