Comparison

Smart Radon vs US Civics Prep Flashcards

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

Head to head

US Civics Prep Flashcards

US Citizenship Test Study Tool

Free

📚 Education

★ 5.09 ratingsView app →

About

Smart Radon

Features

Read full description

Smart Radon este o aplicație mobilă folosită pentru vizualizarea datelor primite de la senzorii echipamentelor de monitorizare. Scopul aplicației este acela de a permite vizualizarea datelor, statisticilor și a hărții corespunzătoare valorilor măsurate.

About

US Civics Prep Flashcards

Prepare for the U.S. civics test for citizenship with this study tool. It offers all official questions and answers to help you learn anytime, anywhere. Master the material for your naturalization interview.

Highlights

Civics test questions and answers
Study anytime, anywhere
Naturalization interview preparation
Official test material

Features

Read full description

Applying for U.S. Citizenship? The US Civics Prep Flashcards will help you prepare for the civics test portion of the naturalization interview. This app provides all the questions and answers for the test which will help you study anytime, anywhere!

Screenshots

Smart Radon3 screens

US Civics Prep Flashcards4 screens

Verdict

The call

The clearest difference is in-app purchases: Smart Radon at none against US Civics Prep Flashcards's 1. Smart Radon also leads on ads (none vs shown) and update cadence (fortnightly vs every 29 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. US Civics Prep Flashcards sells 1 one-off in-app purchase. Smart Radon asks for nothing beyond the download.

UpkeepUpdate frequency

Smart Radon ships an update fortnightly, US Civics Prep Flashcards every 29 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level

Smart Radon versus US Civics Prep Flashcards: the parameters behind the verdict, then further details
Parameter	Smart Radon	US Civics Prep Flashcards
Price	Free	Free
Rating	—	5.0 (9 ratings) — better
Positive reviews	—	100.0% of reviews
Number of ratings	—	9 — better
Update frequency	Fortnightly — better	Every 29 months
Ads	No — better	Yes
In-app purchases	No — better	Yes
Monetization	—	Free with in-app purchases
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	9.0 — better	13.0
Further details — not scored
Size	38 MB	36 MB
Age rating	4+	4+
Developer	Elysian Software	Junel Corales

In-app purchases

None

Smart Radon

No in-app purchases

1 purchases

US Civics Prep Flashcards

One-time1

Remove Ads$3.99

Questions

Is Smart Radon free?

Smart Radon is free to download, with no in-app purchases.

Is US Civics Prep Flashcards free?

US Civics Prep Flashcards is free to download, with in-app purchases available.

Do Smart Radon or US Civics Prep Flashcards have ads?

US Civics Prep Flashcards shows ads; Smart Radon does not.

Which is updated more often, Smart Radon or US Civics Prep Flashcards?

Smart Radon ships an update fortnightly, and US Civics Prep Flashcards every 29 months. Most recently, Smart Radon was updated on November 2, 2026 and US Civics Prep Flashcards on November 3, 2026.