Comparison

UltraStop vs Stopwatch Skull

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

Head to head

UltraStop

Precision timing made easy

Stopwatch that moves with you.

Free

🔧 Utilities

No ratingsView app →

About

UltraStop

Features

Read full description

A high-performance stopwatch app designed for tasks requiring ultra-precise time measurement. It measures time down to milliseconds and microseconds with exceptional accuracy, making it perfect for experiments, sports, programming tests, and more. With an intuitive interface, anyone can effortlessly record precise timings.

About

Stopwatch Skull

Features

Read full description

Our stopwatch app offers a sleek and user-friendly interface to help you measure time with precision. Features include: - Start, stop, and reset functionality for accurate time tracking. - Lap recording to monitor multiple intervals seamlessly. - Customizable settings to tailor the app to your preferences. - Whether you're timing your workouts, cooking, or any other activity, our app provides the tools you need for precise time management.

Screenshots

UltraStop2 screens

Stopwatch Skull3 screens

Verdict

The call

The clearest difference is update cadence: Stopwatch Skull at daily against UltraStop's every 12 months. Stopwatch Skull also leads on iOS requirement (12.0 vs 15.0). 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

UltraStop ships an update every 12 months, Stopwatch Skull daily. The most recent releases landed on May 19, 2026 and September 15, 2026 respectively.

Scorecard2 real differences · 4 level

UltraStop versus Stopwatch Skull: the parameters behind the verdict, then further details
Parameter	UltraStop	Stopwatch Skull
Price	Free	Free
Update frequency	Every 12 months	Daily — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.0	12.0 — better
Further details — not scored
Size	22 MB	40 MB
Age rating	4+	4+
Developer	JUHWAN LEE	Hasancan Cakicioglu

In-app purchases

None

UltraStop

No in-app purchases

None

Stopwatch Skull

No in-app purchases

Questions

Is UltraStop free?

UltraStop is free to download, with no in-app purchases.

Is Stopwatch Skull free?

Stopwatch Skull is free to download, with no in-app purchases.

Do UltraStop or Stopwatch Skull have ads?

Neither UltraStop nor Stopwatch Skull shows ads.

Which is updated more often, UltraStop or Stopwatch Skull?

UltraStop ships an update every 12 months, and Stopwatch Skull daily. Most recently, UltraStop was updated on May 19, 2026 and Stopwatch Skull on September 15, 2026.