# Dev Calculator vs UI Tracer

The clearest difference is price: Dev Calculator at Free against UI Tracer's $2.99. Dev Calculator also leads on in-app purchases (none vs 2) and iOS requirement (14.0 vs 26.0). UI Tracer's advantage is update cadence (every 2 days vs every 11 days) and device support (6 vs 2). On rating, review sentiment, ratings volume and ads there is nothing between them.

Dev Calculator is free to download; UI Tracer costs $2.99 up front. UI Tracer sells 2 one-off in-app purchases. Dev Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Dev Calculator against 5.0 for UI Tracer. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Dev Calculator ships an update every 11 days, UI Tracer every 2 days. The most recent releases landed on September 1, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Dev Calculator | UI Tracer |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/dev-calculator/id1557104193/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/ui-tracer/id1644874973/reviews) |
| Number of ratings | 4 | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 2 days** |
| Monetization | **Free** | Paid |
| Size | 0 MB | 20 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Scott Lassen](https://appshunter.io/developer/1773765380) | [Leonid Liadveikin](https://appshunter.io/developer/1644874975) |

## What reviewers say

### Dev Calculator

[App page](https://appshunter.io/ios/app/dev-calculator/id1557104193)

A free, ad-free developer calculator focused on bitwise operations and base conversions. It supports unsigned integers up to 64 bits and includes features like shifting, rotating, and casting.

**Highlights:** Bitwise operations (AND, NOT, OR, XOR), Shifting and rotating, Casting support, 64-bit unsigned integer support, Base conversions, No ads

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

**In-app purchases:** none


### UI Tracer

[App page](https://appshunter.io/ios/app/ui-tracer/id1644874973)

This app allows developers to preview various SwiftUI view styles without recompiling code. It offers comparisons across multiple Apple platforms, including iOS, iPadOS, watchOS, tvOS, and macOS, streamlining the design process.

**Highlights:** Preview SwiftUI view styles, Compare across iOS, iPadOS, watchOS, tvOS, macOS, No recompilation needed, Cross-platform code compatibility, Extensible view library

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip | $0.99 | one-time |
| Donation | $4.99 | one-time |


## Frequently asked questions

### Is Dev Calculator free?

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

### Is UI Tracer free?

UI Tracer costs $2.99, and also offers in-app purchases.

### Which has better reviews, Dev Calculator or UI Tracer?

Dev Calculator and UI Tracer are both rated 5.0 out of 5 on the App Store, from 4 and 4 ratings respectively.

### Do Dev Calculator or UI Tracer have ads?

Neither Dev Calculator nor UI Tracer shows ads.

### Which is updated more often, Dev Calculator or UI Tracer?

Dev Calculator ships an update every 11 days, and UI Tracer every 2 days. Most recently, Dev Calculator was updated on September 1, 2026 and UI Tracer on September 10, 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.*