# Swift IDE vs DB RelationalAlgebra

The clearest difference is ratings volume: Swift IDE at 17 against DB RelationalAlgebra's 1. On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for Swift IDE against 5.0 for DB RelationalAlgebra. That said, the two scores are not equally well evidenced: Swift IDE has 17 ratings behind it against 1, so its average is the more settled of the two.

Swift IDE ships an update monthly, DB RelationalAlgebra every 3 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Swift IDE | DB RelationalAlgebra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (17 ratings)](https://appshunter.io/ios/app/swift-ide-swiftpad-compiler/id6761880276/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/db-relationalalgebra/id6792125742/reviews)** |
| Number of ratings | **17** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 17 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Devashy Rangpariya](https://appshunter.io/developer/1890994316) | [Artur Borycki](https://appshunter.io/developer/6792125744) |

## What reviewers say

### Swift IDE

[App page](https://appshunter.io/ios/app/swift-ide-swiftpad-compiler/id6761880276)

Write, run, and test Swift code directly on your iOS device. This app is perfect for beginners, students, and developers who want to code anytime, anywhere, with features like syntax highlighting and file management.

**Highlights:** Swift code editor, Instant Swift code execution, Syntax highlighting, File management, Dark and light themes, Code practice and testing

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

**In-app purchases:** none


### DB RelationalAlgebra

[App page](https://appshunter.io/ios/app/db-relationalalgebra/id6792125742)

This app translates SQL queries into relational algebra, tuple relational calculus, and domain relational calculus. It provides step-by-step derivations, final formulas, and interactive diagrams for each notation. It accurately reports when SQL cannot be expressed exactly by a notation.

**Highlights:** SQL to relational algebra conversion, SQL to tuple relational calculus conversion, SQL to domain relational calculus conversion, Step-by-step derivations, Interactive operator and quantifier scope trees, Comparison view of all notations

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

**In-app purchases:** none


## Frequently asked questions

### Is Swift IDE free?

Swift IDE is free to download, with no in-app purchases.

### Is DB RelationalAlgebra free?

DB RelationalAlgebra is free to download, with no in-app purchases.

### Which has better reviews, Swift IDE or DB RelationalAlgebra?

DB RelationalAlgebra is rated higher. Swift IDE averages 4.9 out of 5 from 17 ratings, while DB RelationalAlgebra averages 5.0 from 1 ratings.

### Do Swift IDE or DB RelationalAlgebra have ads?

Neither Swift IDE nor DB RelationalAlgebra shows ads.

### Which is updated more often, Swift IDE or DB RelationalAlgebra?

Swift IDE ships an update monthly, and DB RelationalAlgebra every 3 weeks. Most recently, Swift IDE was updated on October 28, 2026 and DB RelationalAlgebra on October 25, 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.*