# JTR Calcs vs QR Wave

The clearest difference is ads: JTR Calcs at none against QR Wave's shown. QR Wave's advantage is update cadence (every 2 days vs every 9 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

JTR Calcs ships an update every 9 months, QR Wave every 2 days. The most recent releases landed on September 14, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | JTR Calcs | QR Wave |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 2 days** |
| Size | 1 MB | 6 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rex Harris](https://appshunter.io/developer/1709578578) | [Atakan Arslan](https://appshunter.io/developer/1338472229) |

## What reviewers say

### JTR Calcs

[App page](https://appshunter.io/ios/app/jtr-calcs/id6468682017)

**Features:** macOS Compatibility

**In-app purchases:** none


### QR Wave

[App page](https://appshunter.io/ios/app/qr-wave/id6477296195)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JTR Calcs free?

JTR Calcs is free to download, with no in-app purchases.

### Is QR Wave free?

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

### Do JTR Calcs or QR Wave have ads?

QR Wave shows ads; JTR Calcs does not.

### Which is updated more often, JTR Calcs or QR Wave?

JTR Calcs ships an update every 9 months, and QR Wave every 2 days. Most recently, JTR Calcs was updated on September 14, 2026 and QR Wave on June 5, 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.*