Comparison

カップルゲーム SYNC vs Lie Detector Test

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

Head to head
About

カップルゲーム SYNC

Features
Read full description

A couple quiz game for two players on one iPhone. Turn your phone sideways and sit facing each other. Both players choose A or B for the same question, then reveal answers together. ● 7 genres: Normal, Drama, Funny, Values, Adult, Secrets, What-if ● About 350 questions to spark conversation ● Recap every 5 questions to compare your answers ● Play history saved on device Free play includes 15 questions per genre. Continue with rewarded ads or a one-time Premium unlock (all questions, no ads). No account required. Data is stored on your device.

About

Lie Detector Test

This app simulates a lie detector test for entertainment purposes. Place a finger on the scanner, ask questions, and get a 'Truth' or 'Lie' verdict. It's designed for parties and pranks, with customizable results.

Highlights
  • Fingerprint scanner simulator
  • Animated polygraph waveform
  • Customizable verdict control
  • Realistic sound effects and haptics
  • Party game for friends
  • Instant prank setup
Features
Read full description

Is your friend telling the TRUTH… or a total LIE? Place a finger on the scanner, ask any question, and let the Lie Detector Test deliver the verdict — the ultimate party prank! Your phone becomes a hilarious polygraph simulator: an animated fingerprint scanner, a racing waveform, radar rings, a heartbeat countdown, dramatic scanning sounds and haptics… and then the glowing verdict drops: TRUTH or LIE. Their face in that moment? Priceless. YOU SECRETLY CONTROL THE VERDICT • Customize Mode: pre-set the next results in any order before you hand the phone over • Random Mode: a genuine 50/50 for real suspense • They'll never know it was rigged — that's the prank THE ULTIMATE PARTY GAME • Loyalty tests for couples and best friends • Sleepovers, game nights, road trips, April Fools and family gatherings • Truth-or-dare nights: ask the juicy questions — "Do you have a crush?" "Who ate my snack?" • Film the reveal — the reactions are made for TikTok, Reels and Shorts FEELS SCARY REAL • Realistic fingerprint scanner with a suspenseful press-and-hold • Animated polygraph waveform, radar rings and countdown • Immersive sound effects and haptic vibrations • A dramatic, glowing TRUTH or LIE reveal WHY YOU'LL LOVE IT • Prank in seconds — no setup, no sign-up • Slick sci-fi neon design • Endless laughs, every single time DISCLAIMER Lie Detector Test is a prank and entertainment app for fun only. It does NOT detect real lies or truth and does not read fingerprints or any biometric data — every result is random or pre-set by you, purely for entertainment. Always let your friends in on the joke! Privacy Policy: https://thirtythreeapps.com/ios-lie-detector-test-privacy-policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Download Lie Detector Test now — scan a finger, reveal the verdict, and find out who's REALLY lying!

Screenshots

カップルゲーム SYNC3 screens
Lie Detector Test4 screens

Verdict

The call

The clearest difference is update cadence: Lie Detector Test at every 3 weeks against カップルゲーム SYNC's every 3 months. On price, 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

Both are free to download. カップルゲーム SYNC sells 1 one-off in-app purchase and Lie Detector Test sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

カップルゲーム SYNC ships an update every 3 months, Lie Detector Test every 3 weeks. The most recent releases landed on September 18, 2026 and September 1, 2026 respectively.

Scorecard1 real difference · 9 level
カップルゲーム SYNC versus Lie Detector Test: the parameters behind the verdict, then further details
Parameterカップルゲーム SYNCLie Detector Test
PriceFreeFree
Rating—4.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsYesYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone, iPad — better
Requires iOS16.616.0 — better
Further details — not scored
Size9 MB28 MB
Age rating4+4+
DeveloperYuya TakamotoThirty Three Apps

In-app purchases

1 purchases

カップルゲーム SYNC

One-time1
  • 全ジャンル解放(買い切り)$1.99
2 purchases

Lie Detector Test

Subscriptions2
  • Weekly Subscription7 Days trial$9.997 Days
  • Monthly Subscription$29.991 Month

Questions

Is カップルゲーム SYNC free?
カップルゲーム SYNC is free to download, with in-app purchases available.
Is Lie Detector Test free?
Lie Detector Test is free to download, with in-app purchases available.
Do カップルゲーム SYNC or Lie Detector Test have ads?
Both カップルゲーム SYNC and Lie Detector Test show ads.
Which is updated more often, カップルゲーム SYNC or Lie Detector Test?
カップルゲーム SYNC ships an update every 3 months, and Lie Detector Test every 3 weeks. Most recently, カップルゲーム SYNC was updated on September 18, 2026 and Lie Detector Test on September 1, 2026.

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