Level Devil vs Flip Clock
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Level Devil
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The Official Tank Monitoring app from Electronic Sensors Inc. Monitor your tanks levels from anywhere on your phone.
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): β’ Full-screen flip clock with 12/24-hour display β’ Optional seconds display β card or mini style β’ Date and weekday at a glance β’ Stopwatch with start/pause/reset β’ Pomodoro timer with customizable duration β’ 2 alarms β’ 1 countdown event β’ Monthly calendar view β’ Cycle tracker with predictions β’ Portrait and landscape support β’ Screen always-on option β’ English and Chinese PREMIUM (one-time, no subscription): β’ Multiple color themes β’ Flip animation styles and sound effects β’ Custom app icons β’ Unlimited alarms with repeat rules β’ Unlimited countdown events with categories β’ Calendar integration with alarms and countdowns β’ Week view in calendar β’ 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: Level Devil at none against Flip Clock's 1. Level Devil also leads on iOS requirement (8.0 vs 17.0). Flip Clock's advantage is update cadence (monthly vs every 4 months). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Flip Clock sells 1 one-off in-app purchase. Level Devil asks for nothing beyond the download.
Level Devil ships an update every 4 months, Flip Clock monthly. The most recent releases landed on September 28, 2026 and September 30, 2026 respectively.
| Parameter | Level Devil | Flip Clock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Monthly β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 8.0 β better | 17.0 |
| Further details β not scored | ||
| Size | 56 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | SensorTech, LLC | η£ ε |
In-app purchases
Level Devil
No in-app purchases
Flip Clock
- SimpleClock Pro Edition$2.99
Questions
Is Level Devil free?
Is Flip Clock free?
Do Level Devil or Flip Clock have ads?
Which is updated more often, Level Devil or Flip Clock?
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