Comparison

Dual Splits vs C4Timekeeper

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

Head to head
About

Dual Splits

Features
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The Dual Splits Timer consists of two stopwatches each with a split timer. The stopwatches may be started and stopped either separately or together. 
Each stopwatch has two buttons: one starts the stopwatch and resumes after a split and the other records each split time shown in red numbers on a white background. Stopwatches can be reset to zero only when a running stopwatch is paused. On the stopwatch displays, time can be measured in either seconds or decimal minutes. Additionally, there are two levels of time precision. One displays two digits for seconds or two digits for hundredths of a minute. For more precision, the other measures and displays seconds as two digits plus tenths of a second or three digits for thousandths of a minute. Lastly, there are three clockface color options to improve readability day or night.

About

C4Timekeeper

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Stopwatch for timekeeper This app is a stopwatch for timekeeper of Oldtimer Rallye This app replaces the expensive stopwatch of Oldtimer Rally organizer. This app can be used by the timekeeper for the secret time control. On the external Bluetooth button (can be me ordered ) a photocell can be connected. A printer is not necessary, because you can send the times by e-mail to the organizers. Thus, need for evaluations, the organizers do not wait until the timer to come back. Synchronization of the clock: 1. Manually, using as a reference the time of the organizers. 2. GPS, using the satellite time. 3. The atomic time, using one of the many global or regional server. Functions: You can use for the Stop, the green software button "Start". For the Stop can also be used with an external bluetooth-button. The button works with all iPad e iPhone. Important! A photocell can at the input for the button to be connected (the contact is open). The external button, you can order from me, price see at https://filippo-software.de. Limitations of the Free-version: * A maximum. 5 times to stop. Supported languages: German, Italian, English

Screenshots

Dual Splits2 screens
C4Timekeeper4 screens

Verdict

The call

The clearest difference is price: C4Timekeeper at Free against Dual Splits's $3.99. Dual Splits's advantage is in-app purchases (none vs 3) and iOS requirement (12.0 vs 16.0). On update cadence, ads 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

C4Timekeeper is free to download; Dual Splits costs $3.99 up front. C4Timekeeper sells 3 one-off in-app purchases. Dual Splits asks for nothing beyond the download.

UpkeepUpdate frequency

Dual Splits ships an update every 3 months, C4Timekeeper every 2 months. The most recent releases landed on September 19, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 3 level
Dual Splits versus C4Timekeeper: the parameters behind the verdict, then further details
ParameterDual SplitsC4Timekeeper
Price$3.99Free — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size1 MB10 MB
Age rating4+4+
DeveloperMSYappsFilippo Gozza

In-app purchases

None

Dual Splits

No in-app purchases

3 purchases

C4Timekeeper

One-time3
  • Full version for one month$4.99
  • Full version for 6 months$8.99
  • Full version for one year$13.99

Questions

Is Dual Splits free?
Dual Splits costs $3.99, with no in-app purchases.
Is C4Timekeeper free?
C4Timekeeper is free to download, with in-app purchases available.
Do Dual Splits or C4Timekeeper have ads?
Neither Dual Splits nor C4Timekeeper shows ads.
Which is updated more often, Dual Splits or C4Timekeeper?
Dual Splits ships an update every 3 months, and C4Timekeeper every 2 months. Most recently, Dual Splits was updated on September 19, 2026 and C4Timekeeper on October 8, 2026.

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