Mini App Central vs DB RelationalAlgebra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mini App Central
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Your Instant Mini App Playground StackLive: Mini App Central lets you discover and launch mini apps immediately — no installs, no waiting. Browse a growing catalog of curated interactive experiences and open them in one tap.
DB RelationalAlgebra
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A native iPad and iPhone app that converts a SQL query typed, pasted, or imported from a .sql file into relational algebra, tuple relational calculus and domain relational calculus. Each notation gets a step by step derivation, a final oneline formula, and an interactive diagram an operator tree for the algebra, a quantifier scope tree for the calculus and a fourth view stacks all three against the same query. Whatever SQL asks for that a notation cannot express exactly is reported rather than quietly approximated.
Screenshots
Verdict
The clearest difference is iOS requirement: Mini App Central at 15.1 against DB RelationalAlgebra's 17.0. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Mini App Central | DB RelationalAlgebra |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 30 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Sibin Lukose | Artur Borycki |
In-app purchases
Mini App Central
No in-app purchases
DB RelationalAlgebra
No in-app purchases
Questions
Is Mini App Central free?
Is DB RelationalAlgebra free?
Do Mini App Central or DB RelationalAlgebra have ads?
Other comparisons
