레트로 시계 vs Flip Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
레트로 시계
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심플한 레트로 LCD 시계입니다. 7세그먼트 디스플레이로 시간을 보여주고, 날짜와 날씨도 함께 표시됩니다. 화면이 꺼지지 않아 탁상시계로 딱 좋습니다. • 5가지 LCD 테마 (게임보이, 네온, 앰버, 블루, 레드) • 현재 위치 기반 날씨 표시 • 날짜 및 요일 표시 • 가로 모드 전체화면 • 광고 없음, 추적 없음
Flip Clock
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Your flip clock, reimagined. One screen. Three modes. Zero clutter. A large flip-digit clock that shows time like a retro split-flap display. Swipe left for Pomodoro timer, right for stopwatch. No menus, no tabs, no distractions. FREE FEATURES (forever): • Full-screen flip clock with 12/24-hour display • Optional seconds display — card or mini style • Date and weekday at a glance • Stopwatch with start/pause/reset • Pomodoro timer with customizable duration • 2 alarms • 1 countdown event • Monthly calendar view • Cycle tracker with predictions • Portrait and landscape support • Screen always-on option • English and Chinese PREMIUM (one-time, no subscription): • Multiple color themes • Flip animation styles and sound effects • Custom app icons • Unlimited alarms with repeat rules • Unlimited countdown events with categories • Calendar integration with alarms and countdowns • Week view in calendar • Cycle tracker Face ID lock, reminders, data export Most clock apps bury you in menus or lock features behind subscriptions. SimpleClock gives you the essentials free forever, with a single one-time purchase for power users. 100% offline. No account. No data collection. Your time. Your device. Simple.
Screenshots
Verdict
The clearest difference is in-app purchases: 레트로 시계 at none against Flip Clock's 1. 레트로 시계 also leads on update cadence (fortnightly vs monthly) and iOS requirement (13.0 vs 17.0). On price, ads 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
Both are free to download. Flip Clock sells 1 one-off in-app purchase. 레트로 시계 asks for nothing beyond the download.
레트로 시계 ships an update fortnightly, Flip Clock monthly. Both last shipped on October 16, 2026.
| Parameter | 레트로 시계 | Flip Clock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 15 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | YOUNGJOO KIM | 磊 刘 |
In-app purchases
레트로 시계
No in-app purchases
Flip Clock
- SimpleClock Pro Edition$2.99









