Comparison

Fast Clock vs Flip Clock

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

Head to head
About

Fast Clock

This application simulates a fast clock for model railroads. It allows for custom logos and maps, and can synchronize with external systems like JMRI or use real-time.

Highlights
  • Model railroad fast clock simulation
  • Custom logo support
  • Custom map integration
  • JMRI time synchronization
  • Real-time clock option
Features
Read full description

A model railroad fast clock app Supports custom logos Supports custom maps Can read time from JMRI, the built-in fast clock, or real time

About

Flip Clock

Features
Read full description

Turn any phone or tablet into a beautiful bedside flip clock. Big, easy-to-read digits that dim automatically in the dark, so the clock never lights up your bedroom. Prop it on the nightstand or desk and glance the time from across the room. MADE FOR THE NIGHTSTAND • Full-screen flip digits — readable from bed • Auto-dimming for dark rooms, easy on the eyes • Burn-in protection so a static clock won't mark your screen • 12 / 24-hour, follows your system setting • Stays on all night — a proper bedside clock TRY BEFORE YOU BUY Preview every theme for free — see exactly what you're getting before you pay a cent. HONEST PRICING One-time Pro ($9.99) removes ads and unlocks all themes. No subscription. Ever. The clock itself is free. Great as a bedside clock, night clock, desk clock, or dock display.

Screenshots

Fast Clock4 screens
Flip Clock4 screens

Verdict

The call

The clearest difference is in-app purchases: Fast Clock at none against Flip Clock's 1. Fast Clock also leads on ads (none vs shown) and update cadence (every 2 days vs weekly). Flip Clock's advantage is iOS requirement (13.0 vs 15.6). 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. Flip Clock sells 1 one-off in-app purchase. Fast Clock asks for nothing beyond the download.

UpkeepUpdate frequency

Fast Clock ships an update every 2 days, Flip Clock weekly. The most recent releases landed on September 20, 2026 and September 29, 2026 respectively.

Scorecard4 real differences · 6 level
Fast Clock versus Flip Clock: the parameters behind the verdict, then further details
ParameterFast ClockFlip Clock
PriceFreeFree
Rating3.8 (5 ratings) — better—
Positive reviews25.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 days — betterWeekly
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.613.0 — better
Further details — not scored
Size5 MB34 MB
Age rating4+4+
DeveloperKevin SnowGun woo Kim

In-app purchases

None

Fast Clock

No in-app purchases

1 purchases

Flip Clock

One-time1
  • Pro (Ads-free + All Themes)$9.99

Questions

Is Fast Clock free?
Fast Clock is free to download, with no in-app purchases.
Is Flip Clock free?
Flip Clock is free to download, with in-app purchases available.
Do Fast Clock or Flip Clock have ads?
Flip Clock shows ads; Fast Clock does not.
Which is updated more often, Fast Clock or Flip Clock?
Fast Clock ships an update every 2 days, and Flip Clock weekly. Most recently, Fast Clock was updated on September 20, 2026 and Flip Clock on September 29, 2026.

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