Comparison

Swipe Play Clock vs Power Factor Estimator

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

Head to head
About

Swipe Play Clock

This Apple Watch app provides customizable play clock timers for sports like football and lacrosse. It features intuitive swipe controls to start timers and includes a separate game clock with alerts and programmable settings.

Highlights
  • Customizable play clock lengths
  • Swipe up/down to start timers
  • Independent game clock
  • Programmable settings
  • Alerts for time remaining
  • Workout mode for screen primary
Features
Currently charting
Read full description

Apple Watch App Only: Update for problems the swipe to start the play clock on the new 46mm Series 10 Apple Watch. Similar to the last update, start games in settings menu to start the game since previous method no longer worked. Still working to add previous features, but currently works when swiping up and down on the watch face. Crown rotation does not currently start the play clocks, hope to fix in future versions. Still programmable play clock lengths. This allows you to use the app for both (American) football and lacrosse! Easily swipe up to start the 40 second clock and swipe down to start the 25 second clock on the face of your Apple Watch so you can concentrate on the field. These play clock timers are now programmable so they can be used for other sports, such as lacrosse. Watch Tutorial at: backjudgesolutions.com For football officials using college and high school (NFHS) rules. A game clock is included as well, which runs independent from the play clock (double tap the watch face to start/stop). Instructions (w/ watch face is active/on): 1. Settings Button - Menu Screen includes: a. Start Game - This turns on workout mode for the watch which is required to run timers. b. End Game - When the game is completed, exit workout mode. c. Adjust game clock time d. Settings window 2. Swipe Up on watch face - Starts the swipe up play clock timer 3. Swipe Down on watch face - Starts the swipe down play clock timer 4. Double Touch watch face - Starts/Stops game clock Settings Window: Period Length - This is the time that the Game Clock will reset once it expires (00:00:00). If you do not have game clock responsibilities, you can set this to be your Time Out timer. 2-Minute Warning - Watch will alert you with 2 minutes left on the Game Clock Swipe Up Timer - Sets the length of the Play Clock when the clock face is swiped up (or crown rotate up), such as the 40 second play clock Swipe Down Timer - Sets the length of the Play Clock when the clock face is swiped down (or crown rotate down), such as the 25 second play clock 5 second countdown - Sends an alert every second from 5 seconds until time expires on the Play Clock 10 second alert - Sends an alert with 10 seconds left on the Play Clock 15 second alert - Sends an alert with 15 seconds left on the Play Clock 25 second alert - Sends an alert with 25 seconds left on the Play Clock While the game is running, your watch is in workout mode to keep the screen primary, I do not record any health data.

About

Power Factor Estimator

This app calculates power factor, average velocity, and velocity spread from projectile weight and velocity data. It allows users to input velocities, view minimum and maximum values, and manage data through add, remove, clear, and reset functions.

Highlights
  • Calculate Power Factor
  • Calculate Average Velocity
  • Calculate Velocity Spread
  • View Min/Max Velocity
  • Add Velocity Data
  • Remove Velocity Data
  • Clear Velocity Table
Features
Read full description

Power Factor Calculator will calculate: - Power Factor, - Average Velocity, - Velocity Spread. Also would be shown the minimum and maximum velocity from the Velocity Table data. To calculate the Power Factor you have to enter the Weight of projectile in grains. Then add the velocities(in ft/s) to the table by specifying the velocity, and pressing the "Add" button. Thereafter all velocities was added to the table, press a "Calculate" button to perform the calculations. You can remove the particular value of velocity by swiping left. Or clear all Velocity Table by pressing the "Clear" button. To clean up all the data, press the "Reset" button.

Screenshots

Swipe Play Clock1 screens
Power Factor Estimator1 screens

Verdict

The call

The clearest difference is price: Power Factor Estimator at Free against Swipe Play Clock's $5.99. Power Factor Estimator also leads on update cadence (every 3 days vs every 12 months). Swipe Play Clock's advantage is rating (2.7 vs 1.0) and review sentiment (39% vs 0%). On 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

Power Factor Estimator is free to download; Swipe Play Clock costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Swipe Play Clock holds the better App Store score, 2.7 against 1.0. That said, the two scores are not equally well evidenced: Swipe Play Clock has 26 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 39% of Swipe Play Clock's written reviews are positive against 0% of Power Factor Estimator's.

UpkeepUpdate frequency

Swipe Play Clock ships an update every 12 months, Power Factor Estimator every 3 days. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

Scorecard8 real differences · 3 level
Swipe Play Clock versus Power Factor Estimator: the parameters behind the verdict, then further details
ParameterSwipe Play ClockPower Factor Estimator
Price$5.99Free — better
Rating2.7 (26 ratings) — better1.0 (1 ratings)
Positive reviews38.9% of reviews — better0.0% of reviews
Number of ratings26 — better1
Update frequencyEvery 12 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#93 — better—
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPod
Requires iOS12.2 — better15.4
Further details — not scored
Size10 MB1 MB
Age rating4+4+
DeveloperBack Judge Solutions LLCOleg Udovenko

Customer experience

Swipe Play Clock

All ratings26 ratings
Positive42.3%
Neutral7.7%
Negative50.0%
Written reviews18 reviews
Positive38.9%
Neutral11.1%
Negative50.0%

Power Factor Estimator

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Swipe Play Clock

No in-app purchases

None

Power Factor Estimator

No in-app purchases

Questions

Is Swipe Play Clock free?
Swipe Play Clock costs $5.99, with no in-app purchases.
Is Power Factor Estimator free?
Power Factor Estimator is free to download, with no in-app purchases.
Which has better reviews, Swipe Play Clock or Power Factor Estimator?
Swipe Play Clock is rated higher. Swipe Play Clock averages 2.7 out of 5 from 26 ratings, while Power Factor Estimator averages 1.0 from 1 ratings.
Do Swipe Play Clock or Power Factor Estimator have ads?
Neither Swipe Play Clock nor Power Factor Estimator shows ads.
Which is updated more often, Swipe Play Clock or Power Factor Estimator?
Swipe Play Clock ships an update every 12 months, and Power Factor Estimator every 3 days. Most recently, Swipe Play Clock was updated on October 9, 2026 and Power Factor Estimator on October 3, 2026.

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