Arrayground vs GizmoSQL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Arrayground
This app provides a mobile interface for interacting with CBQN and ngn/k libraries. It functions as a REPL (Read-Eval-Print Loop) for developers working with these specific programming environments on their mobile devices.
- Mobile REPL interface
- CBQN library integration
- ngn/k library integration
- SwiftUI application
- Works on iPhone and iPad
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A SwiftUI application to interface with CBQN and ngn/k libraries into a working repl.
GizmoSQL
Transform your mobile device into a powerful SQL database server. Connect from any device on your network using the Arrow Flight SQL protocol. Explore and query your data with built-in tools.
- DuckDB and SQLite backends
- Arrow Flight SQL protocol
- Built-in SQL client
- Data browser
- Network connectivity
- TLS encryption
- Username/password authentication
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The GizmoSQL app turns your iPhone or iPad into a high-performance SQL database server using the Arrow Flight SQL protocol — the same columnar data transfer standard used in enterprise analytics. START A SERVER IN SECONDS Choose DuckDB or SQLite as your backend, tap Start, and you have a fully functional database server running on your device. Connect from laptops, desktops, or other devices on your network using any Arrow Flight SQL client — including JDBC, ADBC (Go, Python, C++), ODBC, and Node.js drivers. DUCKLAKE COMPATIBLE Access your DuckLake using your GizmoSQL mobile server. The PostgreSQL and httpfs extensions are pre-loaded so you can connect to and query your data lake seamlessly. BUILT-IN SQL CLIENT Write and execute SQL queries directly on your device with a terminal-style interface. Features include syntax highlighting, box-drawing table output, query timing, and automatic result pagination for large datasets. DATA BROWSER Explore your database visually. Navigate catalogs, schemas, and tables. View column names, types, and constraints. Preview data and manage tables — all without writing a query. KEY FEATURES - DuckDB and SQLite database backends - Arrow Flight SQL protocol for high-performance columnar data transfer - Automatic TLS encryption with self-signed certificates - Username/password authentication with JWT session tokens - Configurable query timeout, logging, and init SQL commands - Export database files via the Files app — copy to iCloud Drive, AirDrop, or any sharing method - Real-time server logs with color-coded severity levels - Active session monitoring BUILT FOR ANALYTICS DuckDB is an analytical database engine optimized for complex queries over large datasets. Combined with Arrow Flight SQL's columnar transport, GizmoSQL delivers fast query results whether you're running TPC-H benchmarks or exploring real-world data on the go. CONNECT FROM ANYWHERE ON YOUR NETWORK Once the server is running, any device on the same Wi-Fi network can connect using the displayed connection string. GizmoSQL supports the full Arrow Flight SQL protocol including prepared statements, transactions, catalog metadata, and bulk data ingest. See: https://gizmodata.com/gizmosql for more details. View the source code at: https://github.com/gizmodata/gizmosql
Screenshots
Verdict
The clearest difference is price: Arrayground at Free against GizmoSQL's $0.99. Arrayground also leads on update cadence (every 5 days vs every 2 weeks). GizmoSQL's advantage is rating (5.0 vs 4.8). On ratings volume, ads, in-app purchases 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
Arrayground is free to download; GizmoSQL costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GizmoSQL holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.
Arrayground ships an update every 5 days, GizmoSQL every 2 weeks. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.
| Parameter | Arrayground | GizmoSQL |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.8 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 5 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 67 MB |
| Age rating | 17+ | 4+ |
| Developer | Asakura | Gizmo Data LLC |
Customer experience
Arrayground
GizmoSQL
In-app purchases
Arrayground
No in-app purchases
GizmoSQL
No in-app purchases









