Comparison

CTA Go vs World Sounds

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

Head to head

Identify over 300 sounds

$2.99

📊 Productivity

No ratingsView app →

About

CTA Go

Features

Read full description

Mit CTA Go können Sie Ihre Wärmepumpe ganz einfach von Ihrem Smartphone aus steuern. Sie können Sollwerteinstellungen verwalten und erhalten Alarmmeldungen sollte ein Fehler auftreten. Hinweis! Diese Anwendung erfordert eine Inbetriebnahme durch einen Servicetechniker der CTA.

About

World Sounds

This AI-powered application detects and alerts you to over 300 different sounds, including human noises, animals, and various items. It offers customizable haptic, sound, and push notifications for immediate awareness. Supports 35 languages and is optimized for newer iPhone models.

Highlights

AI sound identification
Over 300 sound types
Haptic alerts
Sound alerts
Push notifications
35 language support

Features

Read full description

Welcome to WorldSounds, this app works with Artificial Intelligence to identify over 300 different types of sounds. When your iPhone detects any sounds selected it will activate a haptic alert, sound alert and push notifications in background. This includes a variety of noises, ranging from human sounds, musical instruments, animals, and various items. - It supports up to 35 languages. - For the best experience, we suggest to use an iPhone 8 or newer.

Screenshots

CTA Go4 screens

World Sounds3 screens

Verdict

The call

The clearest difference is price: CTA Go at Free against World Sounds's $2.99. CTA Go also leads on iOS requirement (13.0 vs 15.0). World Sounds's advantage is update cadence (monthly vs every 15 months). On 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

CTA Go is free to download; World Sounds costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CTA Go ships an update every 15 months, World Sounds monthly. Both last shipped on November 3, 2026.

Scorecard3 real differences · 5 level

CTA Go versus World Sounds: the parameters behind the verdict, then further details
Parameter	CTA Go	World Sounds
Price	Free — better	$2.99
Positive reviews	—	40.0% of reviews
Update frequency	Every 15 months	Monthly — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Paid
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	13.0 — better	15.0
Further details — not scored
Size	26 MB	7 MB
Age rating	4+	4+
Developer	CTA AG	Carlos Obando

In-app purchases

None

CTA Go

No in-app purchases

None

World Sounds

No in-app purchases

Questions

Is CTA Go free?

CTA Go is free to download, with no in-app purchases.

Is World Sounds free?

World Sounds costs $2.99, with no in-app purchases.

Do CTA Go or World Sounds have ads?

Neither CTA Go nor World Sounds shows ads.

Which is updated more often, CTA Go or World Sounds?

CTA Go ships an update every 15 months, and World Sounds monthly. Most recently, CTA Go was updated on November 3, 2026 and World Sounds on November 3, 2026.