Comparison

Just Timer Stopwatch vs Underwater Stopwatch

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

Head to head
About

Just Timer Stopwatch

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If what you need is JUST a simple TIMER, If what you want is JUST an easily accessible TIMER, this is your app. Just Timer Stopwatch! Stopwatches are usually complicated to use because of too many functions. For many occasions, we just need a simple start/stop timer function. This app shows the time label clearly, it has only two buttons, and gives a perfect landscape mode. Just download for free now so that you can use it right away whenever you just need a simple timer!!

About

Underwater Stopwatch

Features
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A lightweight Apple Watch stopwatch and timer built for wet hands. Everything is controlled by rotating the Digital Crown, so you never need the touchscreen. It keeps working when your fingers are wet, gloved, or underwater, and while your watch is in Water Lock. TWO MODES Stopwatch counts up from zero, with laps. Timer counts down from any duration you set, drawn as a draining hourglass, with three unmistakable buzzes at zero. Run past zero and the overtime is recorded too. CROWN CONTROLS Rotate up to start, pause, and save. Rotate down to add a lap, or to continue a paused session. No taps, no buttons, nothing to fumble for. HAPTIC TIME CUES Set a repeating buzz at any interval, plus an optional stronger one for milestones. A light tap every 30 seconds and a firmer one every 5 minutes, for example. Track elapsed time without ever looking at your wrist. STAYS ON SCREEN The app holds the display for your whole session, so a glance shows your timer instead of the watch face. ON YOUR IPHONE Every session syncs across: full history, lap splits with faster and slower comparisons, and your average and longest times. Set durations and cues from either device. BUILT FOR Swimming and pool laps. Surfing. Cold plunges and sauna rounds. Breath-hold and apnea training. Anything you time where looking at a screen is not practical. PRIVATE BY DEFAULT No workouts. No fitness tracking. No Health data. No account, no subscription, no ads, no analytics. Every session stays on your devices.

Screenshots

Just Timer Stopwatch2 screens
Underwater Stopwatch4 screens

Verdict

The call

The clearest difference is device support: Underwater Stopwatch at 2 against Just Timer Stopwatch's โ€”. Just Timer Stopwatch's advantage is iOS requirement (9.0 vs 18.0). On price and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences ยท 4 level
Just Timer Stopwatch versus Underwater Stopwatch: the parameters behind the verdict, then further details
ParameterJust Timer StopwatchUnderwater Stopwatch
PriceFreeFree
Update frequencyโ€”Every 3 days
Adsโ€”No
In-app purchasesNoNo
Devicesโ€”iPhone, Apple Watch โ€” better
Requires iOS9.0 โ€” better18.0
Further details โ€” not scored
Size10 MB4 MB
Age rating4+4+
DeveloperYoung Hwi ChoVlad Topala

In-app purchases

None

Just Timer Stopwatch

No in-app purchases

None

Underwater Stopwatch

No in-app purchases

Questions

Is Just Timer Stopwatch free?
Just Timer Stopwatch is free to download, with no in-app purchases.
Is Underwater Stopwatch free?
Underwater Stopwatch is free to download, with no in-app purchases.

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