Comparison

FII Scanner vs Underwater Stopwatch & Timer

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

Head to head
About

FII Scanner

Features
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FII Scanner is a mobile multi QR code reader designed to manage club entries and class reservations without the need for additional hardware or plastic cards. It’s an eco-friendly, fast-track solution tailored for sports facilities.

About

Underwater Stopwatch & Timer

Features
Read full description

A lightweight Apple Watch stopwatch and timer built for wet hands, that also works on iPhone alone. 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 No watch? The iPhone has its own stopwatch and timer, with laps, an alert at zero, and a Live Activity on your Lock Screen. Start a session on your phone and your watch shows it live. Every watch 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. FEEDBACK WELCOME Underwater Stopwatch is made by one person, and every email gets read. Ideas, bugs, or the activity you use it for: hello@softuki.com, or tap Send Feedback in Settings.

Screenshots

FII Scanner3 screens
Underwater Stopwatch & Timer4 screens

Verdict

The call

The clearest difference is update cadence: Underwater Stopwatch & Timer at every 5 days against FII Scanner's every 2 months. FII Scanner's advantage is iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

FII Scanner ships an update every 2 months, Underwater Stopwatch & Timer every 5 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard2 real differences Β· 4 level
FII Scanner versus Underwater Stopwatch & Timer: the parameters behind the verdict, then further details
ParameterFII ScannerUnderwater Stopwatch & Timer
PriceFreeFree
Update frequencyEvery 2 monthsEvery 5 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS15.6 β€” better18.0
Further details β€” not scored
Size24 MB4 MB
Age rating4+4+
DevelopereFitness S.A.Softuki SRL

In-app purchases

None

FII Scanner

No in-app purchases

None

Underwater Stopwatch & Timer

No in-app purchases

Questions

Is FII Scanner free?
FII Scanner is free to download, with no in-app purchases.
Is Underwater Stopwatch & Timer free?
Underwater Stopwatch & Timer is free to download, with no in-app purchases.
Do FII Scanner or Underwater Stopwatch & Timer have ads?
Neither FII Scanner nor Underwater Stopwatch & Timer shows ads.
Which is updated more often, FII Scanner or Underwater Stopwatch & Timer?
FII Scanner ships an update every 2 months, and Underwater Stopwatch & Timer every 5 days. Most recently, FII Scanner was updated on October 25, 2026 and Underwater Stopwatch & Timer on October 31, 2026.

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