# High Precision Calc vs Scan Fast

The clearest difference is price: Scan Fast at Free against High Precision Calc's $1.99. High Precision Calc's advantage is in-app purchases (none vs 2) and update cadence (fortnightly vs every 7 months). On ads there is nothing between them.

Scan Fast is free to download; High Precision Calc costs $1.99 up front. Scan Fast sells 2 in-app purchases, starting at $1.99 per month. High Precision Calc asks for nothing beyond the download.

High Precision Calc ships an update fortnightly, Scan Fast every 7 months. The most recent releases landed on September 17, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | High Precision Calc | Scan Fast |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/scan-fast-pdf-scanner/id6470950583/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 7 months |
| Monetization | — | Freemium |
| Size | 37 MB | 16 MB |
| Requires iOS | **13** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [嘉欣 胡](https://appshunter.io/developer/1640395440) | [Arda İlgili](https://appshunter.io/developer/1566522815) |

## What reviewers say

### High Precision Calc

[App page](https://appshunter.io/ios/app/high-precision-calc/id6461723260)

**In-app purchases:** none


### Scan Fast

[App page](https://appshunter.io/ios/app/scan-fast-pdf-scanner/id6470950583)

Transform paper documents into a searchable digital archive. Scan, import, enhance, and organize receipts, contracts, and more. Add signatures, notes, and set reminders for important dates. Keep sensitive files private with a secure vault.

**Highlights:** Scan single or multi-page documents, Import existing PDFs and images, Enhance document appearance, Add signatures and notes, Extract text with OCR, Organize with folders and tags, Set document reminders

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Month | $1.99 | per month |
| Pro Yearly | $9.99 | per year |


## Frequently asked questions

### Is High Precision Calc free?

High Precision Calc costs $1.99, with no in-app purchases.

### Is Scan Fast free?

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

### Do High Precision Calc or Scan Fast have ads?

Neither High Precision Calc nor Scan Fast shows ads.

### Which is updated more often, High Precision Calc or Scan Fast?

High Precision Calc ships an update fortnightly, and Scan Fast every 7 months. Most recently, High Precision Calc was updated on September 17, 2026 and Scan Fast on September 7, 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.*