Contact 504 - Vocabulary Builder

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About: 504 ENGLISH WORDS: EXPAND YOUR VOCABULARY Welcome to 504 English Words, your
ultimate companion to mastering everyday English vocabulary! Whether you're a
beginner or an advanced learner, this meticulously crafted app is designed to
enhance your language skills through interactive games and comprehensive word
lists. LEARN WITH EASE: With our carefully curated selection of the 504 most
common English words, you'll quickly gra.



504 Customer Service 💢

Hard-to-find customer service info can be a red flag. Is 504 Safe to use?

The following contact options are available: Pricing Information, Support, General Help, and Press Information/New Coverage (to guage reputation). Discover which options are the fastest to get your customer service issues resolved.



NOTE: If the links below doesn't work for you, Please go directly to the Homepage of Yusuf Demirci





Privacy & Terms:

https://nefarius-apps.github.io/504/privacy-policy



Can I trust 504 app?

Protect your data and wallet. We investigate the developer's website (504.nefarius.co), verify they're legit, and uncover hidden scams or complaints.




3 Most reported problems 😔💔

4.8 out of 5

Data tracking

2025-03-10

by (: ME :)

Sketchy they want to track you across the different apps and websites you use: your user id, device id, usage data, and diagnostics. Instant delete.

Edit: don’t believe their response, they would not be required to ask for consent if they didn’t track your data across services owned by other companies.

Edit again: the person responding to reviews clearly doesn’t understand data tracking across apps and websites from other companies, sketchy when your app is doing it and it’s literally disclosed on your product page ha

Exhusting app ever seen!

2025-03-11

by Lifetime Inquirer

I can assure it is one of the most boring apps I ever seen in AppStore! First use=Uninstall.
Certainly there are more interesting and far better 504 apps in the store with wider range of functionalities and far user friendlier design.
Advice for app’s developer: It would be a good idea that firstly search the store for similar apps and then release a competitive app!

The worst App I’ve ever seen!

2025-03-12

by Rudisplanet

This was the worst app I’ve ever seen! You just can use the flashcards. Nothing else! The pronunciation sounds robot-like. It’s not the original one of the book. And it’s constantly asking you to go on premium. I just uninstalled it after day one.




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  3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.
  4. If you are a 504 - Vocabulary Builder customer and are running into a problem, Justuseapp might not be the fastest and most effective way for you to solve the problem but at least you can warn others off using 504 - Vocabulary Builder.


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