Comparison

40X vs Perfect Stopwatch

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

Head to head
About

40X

Log and track your sports statistics and progress. Share your results and compete with others on a leaderboard. This app helps you monitor your performance and see how you stack up.

Highlights
  • Track statistical progress
  • Log results
  • Share performance
  • Leaderboard competition
  • View options
Read full description

Keep track of and log your statistical progress and share with others your results and options across a leaderboard.

About

Perfect Stopwatch

Accurately time sprints using video analysis. This app provides precise sprint measurements, eliminating the inaccuracies of manual stopwatches and expensive laser systems. Ideal for athletes and coaches seeking verifiable performance data.

Highlights
  • Laser-like sprint accuracy
  • Video analysis for timing
  • Precise start and finish line detection
  • Record unlimited sprint videos
  • Tutorial for easy use
  • Alternative to manual stopwatches
Features
Read full description

Experience the future of sprint timing with Perfect Stopwatch, a free app that delivers laser-like accuracy without breaking the bank. Ideal for various sprinting events, this revolutionary app is the perfect alternative to imprecise stopwatches and expensive laser timing systems. Ever wondered about the accuracy of your sprint time recorded using a handheld stopwatch? Those times can be off by as much as 0.30 seconds. Unfortunately, there has been little consistency in timing sprints, leading to skepticism regarding self-reported times. Perfect Stopwatch offers both accuracy and verifiable proof! Athletes, coaches, scouts, and fans have long sought a convenient and precise method for timing sprints. Perfect Stopwatch is the solution, utilizing video analysis to determine sprint times. Simply drag the video marker to pinpoint the exact moment the athlete's hand leaves the ground at the start and then drag it again to identify when their chest crosses the finish line. The app's tutorial will guide you through the straightforward process. Say goodbye to the uncertainty of a coach's thumb determining your sprint time. With Perfect Stopwatch, you can video record and time your runs as often as you like. No more re-runs due to a coach's timing error, which may have robbed you of your fastest time. With a video of your sprint, Perfect Stopwatch empowers you to measure your performance with unparalleled precision. Don't settle for imprecise timing methods or spend a fortune on high-tech systems. Elevate your sprint performance tracking with Perfect Stopwatch and gain a competitive edge. Join countless athletes, coaches, scouts, and fans who have already made the switch. Download Perfect Stopwatch now and revolutionize the way you measure your sprint times! To access all features, content, and functionality you can subscribe to an annual auto-renewable subscription. This is a recurring transaction that will be charged to your iTunes Account at confirmation of purchase and will automatically renew unless you cancel it at least 24 hours before the end of your subscription. Renewals will be charged the same cost within 24 hours prior to the end of the current period. You can manage your subscriptions and auto-renewal can be turned off by going to your iTunes Account Settings after purchase. Privacy Policy: https://appcano.io/privacy Terms of Use: https://appcano.io/terms

Screenshots

40X4 screens
Perfect Stopwatch3 screens

Verdict

The call

The clearest difference is in-app purchases: 40X at none against Perfect Stopwatch's 5. 40X also leads on ads (none vs shown) and review sentiment (100% vs 86%). Perfect Stopwatch's advantage is update cadence (every 2 weeks vs every 7 months) and ratings volume (193 vs 6). On price, rating 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. Perfect Stopwatch sells 5 in-app purchases, starting at $19.99 per 3 months. 40X asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for 40X against 4.6 for Perfect Stopwatch. That said, the two scores are not equally well evidenced: Perfect Stopwatch has 193 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 100% of 40X's written reviews are positive against 86% of Perfect Stopwatch's.

UpkeepUpdate frequency

40X ships an update every 7 months, Perfect Stopwatch every 2 weeks. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
40X versus Perfect Stopwatch: the parameters behind the verdict, then further details
Parameter40XPerfect Stopwatch
PriceFreeFree
Rating4.5 (6 ratings)4.6 (193 ratings) — better
Positive reviews100.0% of reviews — better86.5% of reviews
Number of ratings6193 — better
Update frequencyEvery 7 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.6 — better15.0
Further details — not scored
Size18 MB68 MB
Age rating4+4+
DeveloperFOOTBALL LIMITED, LCAppcano LLC

Customer experience

40X

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Perfect Stopwatch

All ratings192 ratings
Positive88.5%
Neutral2.1%
Negative9.4%
Written reviews37 reviews
Positive86.5%
Neutral5.4%
Negative8.1%

Bugs and requests

40X

Not enough reviews yet to summarise bugs or requests.

Perfect Stopwatch

Reported bugs

4 issues
  • Videos uploaded not completely in frame
  • Landscape videos crop to portrait
  • App requires restart while editing
  • Limited video uploads for paid users

Requested features

3 requests
  • Allow landscape video uploads without cropping
  • Revert to older, more comfortable interface
  • Clarify data storage handling

In-app purchases

None

40X

No in-app purchases

5 purchases

Perfect Stopwatch

Subscriptions2
  • Perfect Stopwatch 3 Months3 Days trial$19.993 Months
  • Unlock All Features3 Days trial$19.991 Year
One-time3
  • Perfect Stopwatch Individual$29.99
  • Perfect Stopwatch Group$129.99
  • Perfect Stopwatch Team$399.99

Questions

Is 40X free?
40X is free to download, with no in-app purchases.
Is Perfect Stopwatch free?
Perfect Stopwatch is free to download, with in-app purchases available.
Which has better reviews, 40X or Perfect Stopwatch?
Perfect Stopwatch is rated higher. 40X averages 4.5 out of 5 from 6 ratings, while Perfect Stopwatch averages 4.6 from 193 ratings.
Do 40X or Perfect Stopwatch have ads?
Perfect Stopwatch shows ads; 40X does not.
Which is updated more often, 40X or Perfect Stopwatch?
40X ships an update every 7 months, and Perfect Stopwatch every 2 weeks. Most recently, 40X was updated on October 14, 2026 and Perfect Stopwatch on October 24, 2026.

Other comparisons