Dev Calculator vs UI Tracer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dev Calculator
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.
- Bitwise operations (AND, NOT, OR, XOR)
- Shifting and rotating
- Casting support
- 64-bit unsigned integer support
- Base conversions
- No ads
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Full featured, completely free, developer calculator with no ads. Designed primarily for bit operations and quick conversion of bases. In-app purchases don't affect features and are only meant as a way to donate to the developer for his effort. Supports bitwise operations like AND, NOT, OR, XOR. Also supports shifting, rotating and casting. This calculator supports unsigned integers up to 64 bits.
UI Tracer
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.
- Preview SwiftUI view styles
- Compare across iOS, iPadOS, watchOS, tvOS, macOS
- No recompilation needed
- Cross-platform code compatibility
- Extensible view library
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When you are developing your app using SwiftUI, it is really time consuming to compare all possible styles of buttons, list etc to choose one fits best. This app help you check all possible options for SwiftUI's views without recompiling. Compare how they look like on iOS, iPadOS, watchOS, tvOS and MacOS. Same code for all platforms where possible. The list of views will be extended.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Dev Calculator | UI Tracer |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (4 ratings) | 5.0 (4 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 | 4 |
| Update frequency | Every 11 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro — better |
| Requires iOS | 14.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 0 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Scott Lassen | Leonid Liadveikin |
Customer experience
Dev Calculator
UI Tracer
In-app purchases
Dev Calculator
No in-app purchases
UI Tracer
- Tip$0.99
- Donation$4.99
Questions
Is Dev Calculator free?
Is UI Tracer free?
Which has better reviews, Dev Calculator or UI Tracer?
Do Dev Calculator or UI Tracer have ads?
Which is updated more often, Dev Calculator or UI Tracer?
Other comparisons
