# High Precision Calc vs Custom QR

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

Custom QR is free to download; High Precision Calc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

High Precision Calc ships an update fortnightly, Custom QR every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | High Precision Calc | Custom QR |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 37 MB | 6 MB |
| Requires iOS | **13** | 14.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [嘉欣 胡](https://appshunter.io/developer/1640395440) | [Carolina Coronado](https://appshunter.io/developer/1450747601) |

## What reviewers say

### High Precision Calc

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

**In-app purchases:** none


### Custom QR

[App page](https://appshunter.io/ios/app/custom-qr-scan-and-create/id6461775197)

**In-app purchases:** none


## Frequently asked questions

### Is High Precision Calc free?

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

### Is Custom QR free?

Custom QR is free to download, with no in-app purchases.

### Do High Precision Calc or Custom QR have ads?

Custom QR shows ads; High Precision Calc does not.

### Which is updated more often, High Precision Calc or Custom QR?

High Precision Calc ships an update fortnightly, and Custom QR every 2 months. Most recently, High Precision Calc was updated on November 3, 2026 and Custom QR on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*