Comparison

EF Hello Speak vs CoDex Builder

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

Head to head
About

EF Hello Speak

Practice English conversation with an AI tutor that provides instant feedback on pronunciation, grammar, and fluency. Engage in short, personalized lessons designed for real-life scenarios, helping you build confidence for work, study, or travel.

Highlights
  • AI English Tutor (Addi)
  • Real-time pronunciation and grammar feedback
  • Bite-sized 5-minute learning sessions
  • Personalized learning paths
  • Pronunciation Coach
  • Grammar Checker
  • Immersive listening exercises
Features
Read full description

On paper, you're great. Out loud, at speed, in a room full of people? That's the part nobody ever trained you for. So train it here first! Meet Addi, your AI language tutor. Addi builds a plan around the job you actually do and practices with you anytime, anywhere—until you speak up with confidence. YOUR PLAN, BUILT AROUND YOUR WORK Tell Addi your level, your goal and how much time you have. You get a path — what to practice today, what comes next — instead of a library to guess your way through. FIVE LANGUAGES, ONE TUTOR English, Spanish, French, German, Italian. Pick one and Addi builds your plan from there. FOR THE ROOM YOU'RE IN • Give the presentation — open strong, hold the room, handle the Q&A without freezing. • Write the email — say it directly and professionally, the first time. • Ace the interview — from "tell me about yourself" to the questions you ask back. • Run the meeting — disagree, interrupt politely, close the loop. PRACTICE OUT LOUD, 24/7 Addi is a patient tutor who never runs out of time. Role-play a real scenario over messages or in a live voice call, and get real-time feedback on pronunciation, grammar and fluency. No scheduling, no judgment, no waiting for a class to start. KNOW EXACTLY WHAT TO FIX Every conversation ends with a score on pronunciation, fluency, grammar and how well you hit your goal — plus the exact lines you'd say better next time. "You're doing great" isn't feedback. This is. REAL VIDEO, REAL ACCENTS Watch short clips with subtitles and the key phrases pulled out, then practice saying them yourself. TEN MINUTES, OR THIRTY Commute, lunch break, before bed — one scenario takes ten minutes. Got a real block of time? Work through a full structured lesson: learn it, try it, then use it in conversation. AWARD-WINNING LANGUAGE LEARNING 2024 App Store Award Winner, rated 4.9 stars, and built on over 60 years of EF's language education expertise. TRY IT FREE FOR 7 DAYS Every feature unlocked, cancel anytime. Ten minutes a day is long enough to hear yourself say it. HERE TO HELP 24/7 Shake your phone inside the app or email efhello@ef.com, and we'll be there. Terms of Service: https://hello.ef.com/terms-of-service Privacy Policy: https://hello.ef.com/privacy-policy

About

CoDex Builder

Features
Read full description

CoDex is a modern platform designed to simplify how college students discover opportunities. It brings together local events, internships, jobs, and networking opportunities into one easy-to-use app, helping students save time and stay connected to what matters most. Instead of searching across multiple websites and platforms, CoDex provides a faster, more efficient way to explore opportunities in real time—often through features like location-based discovery and curated listings. This is especially valuable since internships and networking events play a key role in building experience, skills, and professional connections for students entering the workforce. With CoDex, students can take control of their future by quickly accessing relevant opportunities, expanding their network, and making smarter career decisions—all in one place.

Screenshots

EF Hello Speak4 screens
CoDex Builder3 screens

Verdict

The call

The clearest difference is in-app purchases: CoDex Builder at none against EF Hello Speak's 16. EF Hello Speak's advantage is ads (none vs shown) and iOS requirement (15.1 vs 26.4). 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. EF Hello Speak sells 16 in-app purchases, starting at $9.99 per month. CoDex Builder asks for nothing beyond the download.

Scorecard3 real differences · 7 level
EF Hello Speak versus CoDex Builder: the parameters behind the verdict, then further details
ParameterEF Hello SpeakCoDex Builder
PriceFreeFree
Rating4.8 (9.4K ratings) — better—
Positive reviews88.1% of reviews—
Number of ratings9.4K — better—
Update frequencyEvery 2 weeks—
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better26.4
Further details — not scored
Size118 MB1 MB
Age rating4+17+
DeveloperSignum International AGMalik Andrews

Bugs and requests

EF Hello Speak

Reported bugs

3 issues
  • Freezing issues when trying to access lessons
  • Inability to change language settings
  • Inconsistent behavior between app versions

Requested features

5 requests
  • More language options beyond English, Spanish, French, and German
  • Improved voice recognition and feedback
  • Better lesson review functionality
  • Customizable difficulty levels
  • Offline mode for lessons

CoDex Builder

Not enough reviews yet to summarise bugs or requests.

In-app purchases

16 purchases

EF Hello Speak

Subscriptions16
  • 1 month access$9.991 Month
  • 3 months access$38.993 Months
  • 3 months premium$38.993 Months
Show 13 more
  • EF Hello Pro 3 Month Plan$39.993 Months
  • 6 months access$48.996 Months
  • Annual access$55.991 Year
  • Annual Pro access$55.991 Year
  • Annual premium$59.001 Year
  • EF Hello Pro Yearly Plan$79.991 Year
  • Learn Spanish: 1-year plan7 Days trial$79.991 Year
  • 1 Year Access7 Days trial$79.991 Year
  • 1 year Hello Pro$79.991 Year
  • 1 year access7 Days trial$79.991 Year
  • 1 year premium7 Days trial$84.991 Year
  • EF Hello Pro Yearly Plan7 Days trial$119.991 Year
  • EF Hello Pro Family Plan7 Days trial$119.991 Year
None

CoDex Builder

No in-app purchases

Questions

Is EF Hello Speak free?
EF Hello Speak is free to download, with in-app purchases available.
Is CoDex Builder free?
CoDex Builder is free to download, with no in-app purchases.
Do EF Hello Speak or CoDex Builder have ads?
CoDex Builder shows ads; EF Hello Speak does not.

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