Comparison

SQL Primer vs Ace SQL Interviews

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SQL Primer

Learn about relational algebra and SQL query language through sample queries, results, and descriptions. This app is suitable for beginners exploring databases or experienced users transitioning to SQL92.

Highlights
  • SQL92 and SQL86/89 sample queries
  • Query results display
  • Query descriptions
  • SQL test script display
  • Introduction to database concepts
Features
Read full description

1970 E.F. Codd has started a revolution with his paper 'A relational model of data for large shared data banks, Communications of the ACM, Volume 13, Issue 6 (June 1970)' that finally led to the today's omnipresent database query language SQL. This little app shows some primitive and derived operations with the following information: * SQL92 and SQL86/89 sample queries, * the results of the queries and * appropriate descriptions. Furthermore the SQL test script that has been used for the calculation of the samples can be displayed. The app is interesting for the first contact with the database subject and for all who are using SQL86/89 queries for over two decades now and finally want to change to SQL92 also ;)

About

Ace SQL Interviews

Features
Read full description

Ace SQL Interviews helps you prepare for SQL, Data Engineering, Data Analytics, Data Science, Database Design, and Performance Tuning interviews with an expertly curated collection of questions and answers. Whether you're a student, aspiring data professional, or experienced engineer preparing for your next opportunity, Ace SQL Interviews provides focused content designed to strengthen your technical knowledge and interview readiness. TOPICS COVERED - SQL Interview Questions - Data Engineering - Data Analytics - Data Science - Database Design - Performance Tuning - Additional Data & Database Concepts WHY CHOOSE ACE SQL INTERVIEWS? - Expertly curated interview-focused questions - Clear and concise explanations - Covers beginner to advanced topics - Designed for self-paced learning - Suitable for students and professionals - Access expertly curated questions covering a wide range of concepts frequently evaluated in technical interviews. Prepare smarter, strengthen your knowledge, and build confidence for your next SQL, Data Engineering, Analytics, or Data Science interview. ___________ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aityl.com/privacy-policy-2.html

Screenshots

SQL Primer4 screens
Ace SQL Interviews4 screens

Verdict

The call

The clearest difference is in-app purchases: SQL Primer at none against Ace SQL Interviews's 2. SQL Primer also leads on iOS requirement (13.4 vs 15.0). Ace SQL Interviews's advantage is update cadence (every 2 weeks vs every 27 months). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Ace SQL Interviews sells 2 one-off in-app purchases. SQL Primer asks for nothing beyond the download.

UpkeepUpdate frequency

SQL Primer ships an update every 27 months, Ace SQL Interviews every 2 weeks. The most recent releases landed on September 15, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 7 level
SQL Primer versus Ace SQL Interviews: the parameters behind the verdict, then further details
ParameterSQL PrimerAce SQL Interviews
PriceFreeFree
Rating3.2 (20 ratings) — better—
Positive reviews79.2% of reviews—
Number of ratings20 — better—
Update frequencyEvery 27 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.4 — better15.0
Further details — not scored
Size32 MB22 MB
Age rating4+4+
DeveloperDr. Ralph HeiderSandyarani Lagishetti

In-app purchases

None

SQL Primer

No in-app purchases

2 purchases

Ace SQL Interviews

One-time2
  • Unlock Unlimited SQL Ace$14.99
  • Unlock All Questions & Answers$19.99

Questions

Is SQL Primer free?
SQL Primer is free to download, with no in-app purchases.
Is Ace SQL Interviews free?
Ace SQL Interviews is free to download, with in-app purchases available.
Do SQL Primer or Ace SQL Interviews have ads?
Neither SQL Primer nor Ace SQL Interviews shows ads.
Which is updated more often, SQL Primer or Ace SQL Interviews?
SQL Primer ships an update every 27 months, and Ace SQL Interviews every 2 weeks. Most recently, SQL Primer was updated on September 15, 2026 and Ace SQL Interviews on September 17, 2026.

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