Golang & SQL

Fedor Obraztsov · Developer Tools

4.5 29 ratings Free

Independent analytics for this App Store listing. AppTracker is not affiliated with Fedor Obraztsov.

Chart standing · US

Not currently charting in this storefront.

What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Sep 24, 2026
Promotional text “Over 530 examples with explanations: Golang and SQL. Over 300 of them are free, and code runs right in the app with the output shown underneath.”
Sep 24, 2026
New version 3.00 → 4.07

• Copying code is open in the free version too, with no limit. • Supports iOS 17 and macOS 14.

Sep 3, 2026
Rating ★ 4.46 → 4.48
Aug 28, 2026
Rating ★ 4.48 → 4.46

Price & rating history · US

Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.

Average rating history over the observed period. 4.40 4.45 4.50 4.55 Aug 25 Sep 7 Sep 20 Oct 2 Oct 15

Average rating · ★ 4.48 now · 2 changes on record

Ratings breakdown · US

The star breakdown behind this app's rating in this storefront.

5★ 72% 21
4★ 17% 5
3★ 3% 1
2★ 0% 0
1★ 7% 2

In-app purchases · US

What this app sells inside itself, grouped by kind and priced for this storefront.

One-time purchases
Golang Samples $0.99
SQL queries $0.99
Unlock the paid topics $0.99
Оperations with example $0.99
Full version $2.99

Screenshots

About

An everyday Golang reference, from strings and collections to goroutines and design patterns. Every example comes with an explanation, and most of them run. • 21 sections: basic types, arrays and collections, structs and interfaces, functions and closures, goroutines and channels, error handling, regular expressions, files, serialization, databases, algorithms, design patterns. • Run in the app: the example actually runs and the output appears under the code. Needs an internet connection. • What changed in new versions: 7 sections from Go 1.13 to 1.23, with the old and the new code side by side. • Keyword and function reference: over 240 articles, open in full, with no daily limit. • SQL alongside: over 200 queries against a live practice database (JOIN, GROUP BY, subqueries, data types). • Edit examples and add your own; they stay in the app and are always at hand. • Search looks inside the code itself, not just the titles: remember a fragment and you will find the example. • Everything except running works offline. No account needed. WHAT THE FREE VERSION INCLUDES 12 runs and 12 edits a day; the counter resets every morning. The keyword reference is open without limits. Up to 5 examples of your own. The full version unlocks every example, lifts the daily limits and raises the run limit to 30 a day. One purchase, no subscription. Examples are drawn from professional sources and verified by running them. Built by a developer for developers. In active development since 2015.

What's new · 4.07

• Copying code is open in the free version too, with no limit. • Supports iOS 17 and macOS 14.

Details

ReleasedFeb 2019
UpdatedJul 2025
Version4.07
Size2.2 MB
RequiresiOS 16.0 or later
Age rating4+
LanguagesArabic, Chinese, English, French, German, Hebrew, Italian, Japanese, Korean, Russian
PriceFree
Categories Developer ToolsEducation
Bundle IDru.obraztsov.codeSamplesGolang