Comparison

Duos vs Interview Prep

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

Head to head
About

Duos

Practice job interviews with an AI that simulates real interviewers. Get personalized feedback on your performance, identify areas for improvement, and prepare for any interview stage. The first interview is free.

Highlights
  • Live voice interview simulation
  • Customizable interviewer personalities
  • Full hiring loop practice
  • Stage-specific mock interviews
  • Real-time feedback and red/green flags
  • Hint and retry options
  • AI coach debrief
Features
Read full description

Stop guessing why you're not getting hired. Duos is a live voice interview simulation. Paste a job link, like a LinkedIn job post, and it builds the company, the role, and the question set around it. Then you talk out loud with an interviewer you pick, from encouraging to flat-out hostile, and run the full hiring loop: recruiter screen, skills deep-dive, manager round. Or, for last-minute prep, a quick mock interview of just the stage you're worried about. The first interview is free. No app trial, and nothing to cancel. IT FEELS LIKE THE REAL THING Your interviewer talks, reacts, pushes back, and changes tactics based on what you say. You'll know when you're losing them, while there's still time to win them back. STUCK? YOU'RE IN CONTROL If you freeze mid-answer, ask for a hint. You can retry an answer, skip a question entirely, read what's on the interviewer's mind, or get a full example answer built on your background and CV. KNOW EXACTLY WHAT TO FIX Learn what the real interviewers never tell you. Your red flags and green flags, meaning the specific moments that formed their opinion. The patterns you repeat without noticing, with real quotes pulled from your own answers. Fix them, practice again, and watch the same mistakes stop showing up. WHY NOT JUST CHATGPT? A chatbot can't read the room. It drifts out of character, agrees when you are wrong, and leaves you a wall of notes. Duos stays in character, pushes back like a real interviewer, runs the whole process, and hands you a game plan. PRIVATE BY DESIGN No human ever hears you. Voice recordings are never stored, sessions are processed automatically, and CV uploads are encrypted. Stop guessing. Start getting offers. SUBSCRIPTION Your first personalized mock interview is free, including overall feedback and part of the debrief with the AI coach. A subscription unlocks unlimited interviews and analytics. Subscriptions auto-renew. You can change your plan or turn off auto-renewal in your Apple Account settings up to 24 hours before the renewal date. When canceled, access expires at the end of the current period. AUDIO & AI TRANSPARENCY Interview audio is transcribed by Deepgram (SOC 2 Type 2 certified, acting as our data processor) in flight and never stored. It is never linked to your email or account details. Transcripts, chat inputs, and preferences power your personalized interviews via Large Language Models (LLMs) hosted in an isolated, enterprise-grade Azure environment with no runtime connection to external providers. No personally identifiable information is sent to the models, and neither Duos nor the Microsoft environment trains AI models on your data. End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://duos-ai.com/privacy Terms of Service: https://duos-ai.com/terms

About

Interview Prep

Enhance your interview skills with an AI coach that provides real-time feedback on your responses and delivery. Practice in a privacy-focused environment with on-device processing and track your progress with stored sessions.

Highlights
  • AI-driven coaching
  • Real-time feedback
  • On-device audio processing
  • Industry-specific optimization
  • Progress tracking
  • Multi-language support
Features
Read full description

Interview Prep is your AI-powered companion, designed to help job seekers and professionals refine their interview skills with real-time feedback. Using advanced deep learning models, this app assists you in crafting strong responses, improving your delivery, and building confidence for any interview scenario. Interview Prep uses privacy-first, on-device processing. Your privacy matters. All audio processing happens locally on your device—no audio data is sent to external servers. This ensures that your audio responses remain completely private and secure. Interview Prep adapts to your needs, offering intelligent suggestions and real-time analysis to help you fine-tune your answers, based on your job, company and personal profile. Whether you're preparing for a job interview, a panel discussion, or just looking to improve your speaking skills, this app provides actionable insights to enhance your performance. All your interview sessions are stored securely on your device, allowing you to track your progress and stay organized. Review and refine past responses anytime. A built-in advanced search feature makes it easy to revisit key answers and improve over time. Why Choose Interview Prep? - AI-driven coaching with real-time feedback - 99+ languages support - Industry-specific question optimization - 100% on-device audio processing for complete privacy - Easy access to past responses for continuous improvement Boost your confidence and sharpen your interview skills with Interview Prep. Whether you're aiming for your dream job or simply refining your communication, this app is your personal interview coach. We do not collect any data. Review our privacy policy at https://interview-prep.apphq.online/privacy. By using this app, you agree to the terms outlined in https://www.apple.com/legal/internet-services/itunes/dev/stdeula/.

Screenshots

Duos4 screens
Interview Prep4 screens

Verdict

The call

The clearest difference is review sentiment: Duos at 100% against Interview Prep's 0%. Duos also leads on rating (5.0 vs 4.6) and update cadence (every 5 days vs monthly). Interview Prep's advantage is ratings volume (5 vs 1). On price, ads, in-app purchases and monetization model 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. Duos sells 4 in-app purchases, starting at $19.99 per month and Interview Prep sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Duos holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Interview Prep has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Duos's written reviews are positive against 0% of Interview Prep's.

UpkeepUpdate frequency

Duos ships an update every 5 days, Interview Prep monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Duos versus Interview Prep: the parameters behind the verdict, then further details
ParameterDuosInterview Prep
PriceFreeFree
Rating5.0 (1 ratings) — better4.6 (5 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings15 — better
Update frequencyEvery 5 days — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size142 MB13 MB
Age rating4+4+
DeveloperMarina GladyshevaLiberace AI

Customer experience

Duos

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Interview Prep

All ratings5 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

4 purchases

Duos

Subscriptions2
  • 1 month Pro$19.991 Month
  • 3 month Pro$41.993 Months
One-time2
  • Unlock Interview Analysis$1.99
  • premium$9.99
2 purchases

Interview Prep

Subscriptions2
  • Pro Weekly$9.997 Days
  • Pro Yearly$49.991 Year

Questions

Is Duos free?
Duos is free to download, with in-app purchases available.
Is Interview Prep free?
Interview Prep is free to download, with in-app purchases available.
Which has better reviews, Duos or Interview Prep?
Duos is rated higher. Duos averages 5.0 out of 5 from 1 ratings, while Interview Prep averages 4.6 from 5 ratings.
Do Duos or Interview Prep have ads?
Neither Duos nor Interview Prep shows ads.
Which is updated more often, Duos or Interview Prep?
Duos ships an update every 5 days, and Interview Prep monthly. Most recently, Duos was updated on November 3, 2026 and Interview Prep on October 30, 2026.

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