A vs ∫dx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A
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Kik flashcards offers A-Level Computer Science revision to learn all topics covered by many exam boards. These will help you learn faster by either topic wise or whole.
∫dx
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∫ dx: A-Level Maths Revision Getting good at A-Level Maths takes one thing: deliberate practice. Not more notes. Not another YouTube playlist. Questions, done consistently, until the methods become second nature. dx is built for exactly that. Smart revision that adapts to you dx tracks every question you rate as "needs work" or "partially got it" and brings it back at the right time - spacing reviews so you're drilling your weak spots, not wasting time on what you already know. AI hints that teach, not spoil Stuck on a question? Get a progressive hint that nudges you in the right direction without giving away the answer. Learn to think through problems, not just copy solutions. Full worked solutions Tap to reveal a step-by-step mark-scheme solution for every question. Not generic ChatGPT answers - structured worked examples built for A-Level Maths. What's inside: • Thousands of exam-style questions across Pure, Statistics, and Mechanics • Edexcel and OCR question banks • LaTeX rendering so every equation and diagram is crisp and readable • Daily 10 - a focused session mixing new questions with spaced review • Custom Practice - drill any topic, any category, any time • Progress tracking so you always know where you stand Free to start. Premium to go further. The core app is free. Premium unlocks unlimited AI hints, full worked solutions, and unlimited custom practice sessions. A-Level Maths rewards consistency. Use dx to build the habit, close the gaps, and hit the grade you're aiming for. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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Verdict
The clearest difference is in-app purchases: A at none against ∫dx's 2. A also leads on iOS requirement (10.0 vs 15.1). ∫dx's advantage is ads (none vs shown) and update cadence (monthly vs every 15 months). On price 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. ∫dx sells 2 in-app purchases, starting at $4.99 per month. A asks for nothing beyond the download.
A ships an update every 15 months, ∫dx monthly. The most recent releases landed on September 17, 2026 and September 6, 2026 respectively.
| Parameter | A | ∫dx |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 15 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 20 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Saman Wijenayake | PRANEEL AGRAWAL |
In-app purchases
A
No in-app purchases
∫dx
- dx Premium Monthly$4.991 Month
- dx Premium Annual$12.991 Year
