# Learn Backend Web Development vs SOLID Architecture

The clearest difference is price: SOLID Architecture at Free against Learn Backend Web Development's $2.99. SOLID Architecture also leads on update cadence (every 9 days vs every 6 months) and iOS requirement (13.0 vs 17). Learn Backend Web Development's advantage is in-app purchases (none vs 3). On ads and device support there is nothing between them.

SOLID Architecture is free to download; Learn Backend Web Development costs $2.99 up front. SOLID Architecture sells 3 one-off in-app purchases. Learn Backend Web Development asks for nothing beyond the download.

Learn Backend Web Development ships an update every 6 months, SOLID Architecture every 9 days. The most recent releases landed on September 16, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Learn Backend Web Development | SOLID Architecture |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/learn-backend-web-development/id1532692205/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 9 days** |
| Monetization | Paid | — |
| Size | 177 MB | 94 MB |
| Requires iOS | 17 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Shahbaz Khan](https://appshunter.io/developer/1479963383) | [Airton Siqueira de Freitas](https://appshunter.io/developer/1809776051) |

## What reviewers say

### Learn Backend Web Development

[App page](https://appshunter.io/ios/app/learn-backend-web-development/id1532692205)

Master server-side programming with a comprehensive, interactive backend development curriculum. Learn core languages, popular frameworks, databases, APIs, and DevOps practices. Practice code in a playground and get AI-powered mentorship for career readiness.

**Highlights:** Core backend languages (Node.js, Python, Java, Go, Rust), Popular frameworks (Express.js, Django, Spring Boot, Rails), Databases & data storage (PostgreSQL, MongoDB, MySQL, Redis), API design and communication (REST, GraphQL, WebSockets), Authentication and security concepts, DevOps and deployment tools (Docker, Kubernetes, AWS), Code playground for instant practice, AI tutor for personalized help and debugging

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

**In-app purchases:** none


### SOLID Architecture

[App page](https://appshunter.io/ios/app/solid-architecture/id6755614891)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CERTIFICATE OF COMPLETION | $2.99 | one-time |
| Premium access | $4.99 | one-time |
| FULL PASS ALL APPS | $17.99 | one-time |


## Frequently asked questions

### Is Learn Backend Web Development free?

Learn Backend Web Development costs $2.99, with no in-app purchases.

### Is SOLID Architecture free?

SOLID Architecture is free to download, with in-app purchases available.

### Do Learn Backend Web Development or SOLID Architecture have ads?

Neither Learn Backend Web Development nor SOLID Architecture shows ads.

### Which is updated more often, Learn Backend Web Development or SOLID Architecture?

Learn Backend Web Development ships an update every 6 months, and SOLID Architecture every 9 days. Most recently, Learn Backend Web Development was updated on September 16, 2026 and SOLID Architecture on September 28, 2026.

---

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