Comparison

My Flood Risk vs ∫dx

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

Head to head
About

My Flood Risk

Features
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MyFloodRisk informs citizens about their exposure to flood risks. It answers the question: “how high can the water rise in my neighbourhood?” The app contains three flood maps, for statistical return periods of: • 10 year (10% probability per year) • 100 year (probability 1% per year) • 1000 year (probability 0,1% per year) The water depth is presented in meters above mean street level and is to be regarded as an indication. For more information see the disclaimer. This app recognizes your current location, but you can also enter a location name in the search bar. Changing between maps can be done in the settings. MyFloodRisk has been developed by HKV services. As a company in flood risk analysis, we find it important that science based information about floods is also easily accessible for the people who live in flood prone areas. This app therefore provides flood information in a comprehensive way for all European countries.

About

∫dx

Features
Read full description

∫ 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/

Screenshots

My Flood Risk3 screens
∫dx4 screens

Verdict

The call

The clearest difference is update cadence: ∫dx at monthly against My Flood Risk's every 14 months. My Flood Risk's advantage is iOS requirement (9.0 vs 15.1). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. My Flood Risk sells 2 one-off in-app purchases and ∫dx sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

My Flood Risk ships an update every 14 months, ∫dx monthly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 4 level
My Flood Risk versus ∫dx: the parameters behind the verdict, then further details
ParameterMy Flood Risk∫dx
PriceFreeFree
Update frequencyEvery 14 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.0 — better15.1
Further details — not scored
Size38 MB42 MB
Age rating4+4+
DeveloperHKV lijn in waterPRANEEL AGRAWAL

In-app purchases

2 purchases

My Flood Risk

One-time2
  • EU River T1000 Y2000Free
  • EU River T100 Y2000Free
2 purchases

∫dx

Subscriptions2
  • dx Premium Monthly$4.991 Month
  • dx Premium Annual$12.991 Year

Questions

Is My Flood Risk free?
My Flood Risk is free to download, with in-app purchases available.
Is ∫dx free?
∫dx is free to download, with in-app purchases available.
Do My Flood Risk or ∫dx have ads?
Neither My Flood Risk nor ∫dx shows ads.
Which is updated more often, My Flood Risk or ∫dx?
My Flood Risk ships an update every 14 months, and ∫dx monthly. Most recently, My Flood Risk was updated on November 2, 2026 and ∫dx on October 31, 2026.

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