Programmer Calculator Lite vs Design Patterns for Devs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Programmer Calculator Lite
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This developer calculator contains the following features: Instant conversions between number systems: - Binary - Decimal - Octal - Hexadecimal Arithmetic operations: - Addition - Subtraction - Multiplication - Division - Mod Logical operations: - AND - OR - NOT - XOR - INC - DEC - SHL - SHR - ROL - ROR Other features: - Copy (long-press) - Paste (long-press) - Share (long-press) - 8, 8U, 16, 16U, 32, 32U, 64 and 64U bit support - Negative numbers allowed - Support fraction values
Design Patterns for Devs
Master software design patterns with interactive flashcards. This app provides comprehensive lessons, code examples, and quizzes to help developers understand and apply architectural concepts for better coding and clearer architecture.
- Interactive flashcards
- Gang of Four pattern coverage
- Real-world analogies
- UML diagrams and code examples
- Usage, Pros & Cons
- Quizzes for retention
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Learn or recall design patterns with interactive flashcards covering every Gang of Four pattern. Whether you’re new to design patterns or looking to refresh your knowledge, this app gives you everything you need to understand and remember them effectively. Each lesson usually includes: > GoF definition > Problem & Solution > Real World Analogy > UML diagram and code example > Usage > Pros & Cons > Common Mistakes > Related Patterns > Quiz Designed for fast recall, real-world application, and long-term retention, this app helps you write better code, understand architecture more clearly, and boost your developer skills. IN-APP PURCHASES The app is free to download. Some features require a one-time purchase. LEGAL Privacy policy - https://danielgogozan.github.io/DesignPatterns-LandingPage/privacypolicy/ Terms of Use - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Programmer Calculator Lite at none against Design Patterns for Devs's 1. Programmer Calculator Lite also leads on iOS requirement (16 vs 26.0). Design Patterns for Devs's advantage is ads (none vs shown) and update cadence (every 2 months vs every 22 months). On price and device support 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
Both are free to download. Design Patterns for Devs sells 1 one-off in-app purchase. Programmer Calculator Lite asks for nothing beyond the download.
Programmer Calculator Lite ships an update every 22 months, Design Patterns for Devs every 2 months. The most recent releases landed on October 27, 2026 and October 14, 2026 respectively.
| Parameter | Programmer Calculator Lite | Design Patterns for Devs |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 22 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 16 — better | 26.0 |
| Further details — not scored | ||
| Size | 10 MB | 24 MB |
| Age rating | 4+ | +4 |
| Developer | Juan Bustos | Daniel Gogozan |
In-app purchases
Programmer Calculator Lite
No in-app purchases
Design Patterns for Devs
- Lifetime$9.99
Questions
Is Programmer Calculator Lite free?
Is Design Patterns for Devs free?
Do Programmer Calculator Lite or Design Patterns for Devs have ads?
Which is updated more often, Programmer Calculator Lite or Design Patterns for Devs?
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