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Comparison

Fast Clock vs TT Clock

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

Head to head
Fast Clock
Fast Clock
Free
🔧 Utilities
★ 3.85 ratingsView app →
TT Clock
TT Clock
Free
🔧 Utilities
No ratingsView app →
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

TT Clock

Features
Read full description

This Application is special designed for the TabTimer Smart Clock

Screenshots

Fast Clock4 screens
TT Clock4 screens

Verdict

The call

The clearest difference is update cadence: Fast Clock at every 2 days against TT Clock's every 3 weeks. TT Clock's advantage is iOS requirement (13.0 vs 15.6). 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fast Clock ships an update every 2 days, TT Clock every 3 weeks. The most recent releases landed on September 20, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
Fast Clock versus TT Clock: the parameters behind the verdict, then further details
ParameterFast ClockTT Clock
PriceFreeFree
Rating3.8 (5 ratings) — better—
Positive reviews25.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size5 MB29 MB
Age rating4+4+
DeveloperKevin SnowShenzhen PROS Electronics Co.,Ltd

In-app purchases

None

Fast Clock

No in-app purchases

None

TT Clock

No in-app purchases

Questions

Is Fast Clock free?
Fast Clock is free to download, with no in-app purchases.
Is TT Clock free?
TT Clock is free to download, with no in-app purchases.
Do Fast Clock or TT Clock have ads?
Neither Fast Clock nor TT Clock shows ads.
Which is updated more often, Fast Clock or TT Clock?
Fast Clock ships an update every 2 days, and TT Clock every 3 weeks. Most recently, Fast Clock was updated on September 20, 2026 and TT Clock on October 8, 2026.

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