C4Timekeeper3.65 - App Store
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Publisher Description
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
Version History General optimization and bug fixes 3.65 Sep 17 * Starting with this version, iOS 16 or higher is required.
* General optimization and bug fixes 3.60 May 19 General optimization and bug fixes 3.56 12/02/2025 An error during the initialization of GPS has been fixed. 3.50.1 02/06/2025 * The saved files can be opened as table files.
* Optimizations and improvements 3.50 02/04/2025 Optimizations and improvements 3.45 10/02/2024 The crashes after the update to iOS 18 have been fixed. 3.40 09/18/2024 * Further optimizations added.
* Each time the program is started, it checks whether a new version is available.
This function can be deactivated via the settings. 3.37 04/26/2024 * New function for managing the license added.
If the license is already installed on 4 devices, as already known, it can no longer be installed on additional devices.
With the new "Remove license" function, the license can be removed from the device used.
The license can then be reinstalled on a new device.
* General optimization and bug fixes 3.35 03/11/2024 General optimization and bug fixes. 3.31 01/03/2024 * The stability of the Bluetooth connection with the in-house Bluetooth devices has been optimized.
* General optimization and bug fixes. 3.30 07/26/2023 Fixed an error when editing username and race name. 3.26 06/08/2023 * Some graphical improvements have been implemented in the dialogs.
* General bug fixes 3.25 05/14/2023 * Added security prompt when closing a restored Start-table and Start-table extra.
* General bug fixes 3.21 02/05/2023 * Further improvements to save the entered data from an app crash.
* Optimization and bug fixes 3.20 11/20/2022 Optimization and bug fixes 3.13 09/29/2022 General optimization and bug fixes 3.12 09/14/2022 * Fixed an error when reading race data that caused the app to crash.
* General optimization and bug fixes 3.11 06/10/2022 * All entered data is saved continuously, so that even after a crash of the app, the previous state is automatically restored.
* In the settings of the app a default username and a default race name can be entered.
If the 2 entries are present, they will be automatically added to the CSV files when saving.
* General optimization and bug fixes. 3.10 05/10/2022 * Fixed a timing error in the start table.
The time offset of daylight saving time was not taken into account.
* General optimization and bug fixes 3.03 04/26/2022 * Input improvements when restoring licenses.
* General optimization and bug fixes. 3.02 01/16/2022 With the internal app "Files" you can access the saved files. 3.01 10/26/2021 A new start table has been introduced.
In this table the stopped time can be assigned directly to the user.
After stopping, the app immediately calculates the target/actual time and saves it in the table.
The table is saved as a CSV file, as usual, and can be further edited with any PC. 3.00 10/18/2021 Starting from this version, the free version can be converted into a full version with the option "in-app purchases". 2.31 09/10/2021 * The entry/change of participant numbers can be done as numbers or as numbers and letters.
The selection can be changed via the settings.
* The updated help includes an example of the use of the new devices: "Bluetooth & Radio Receiver (H015) and Radio Transmitter (H016)".
* Bug fixes 2.29 09/19/2020
About C4Timekeeper
The company that develops C4Timekeeper is Filippo Gozza. The latest version released by its developer is 3.65.
To install C4Timekeeper on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-14 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the C4Timekeeper as malware if the download link is broken.
How to install C4Timekeeper on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the C4Timekeeper is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After C4Timekeeper is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 3.65
posted on 2026-10-14
Version History General optimization and bug fixes 3.65 Sep 17 * Starting with this version, iOS 16 or higher is required.
* General optimization and bug fixes 3.60 May 19 General optimization and bug fixes 3.56 12/02/2025 An error during the initialization of GPS has been fixed. 3.50.1 02/06/2025 * The saved files can be opened as table files.
* Optimizations and improvements 3.50 02/04/2025 Optimizations and improvements 3.45 10/02/2024 The crashes after the update to iOS 18 have been fixed. 3.40 09/18/2024 * Further optimizations added.
* Each time the program is started, it checks whether a new version is available.
This function can be deactivated via the settings. 3.37 04/26/2024 * New function for managing the license added.
If the license is already installed on 4 devices, as already known, it can no longer be installed on additional devices.
With the new "Remove license" function, the license can be removed from the device used.
The license can then be reinstalled on a new device.
* General optimization and bug fixes 3.35 03/11/2024 General optimization and bug fixes. 3.31 01/03/2024 * The stability of the Bluetooth connection with the in-house Bluetooth devices has been optimized.
* General optimization and bug fixes. 3.30 07/26/2023 Fixed an error when editing username and race name. 3.26 06/08/2023 * Some graphical improvements have been implemented in the dialogs.
* General bug fixes 3.25 05/14/2023 * Added security prompt when closing a restored Start-table and Start-table extra.
* General bug fixes 3.21 02/05/2023 * Further improvements to save the entered data from an app crash.
* Optimization and bug fixes 3.20 11/20/2022 Optimization and bug fixes 3.13 09/29/2022 General optimization and bug fixes 3.12 09/14/2022 * Fixed an error when reading race data that caused the app to crash.
* General optimization and bug fixes 3.11 06/10/2022 * All entered data is saved continuously, so that even after a crash of the app, the previous state is automatically restored.
* In the settings of the app a default username and a default race name can be entered.
If the 2 entries are present, they will be automatically added to the CSV files when saving.
* General optimization and bug fixes. 3.10 05/10/2022 * Fixed a timing error in the start table.
The time offset of daylight saving time was not taken into account.
* General optimization and bug fixes 3.03 04/26/2022 * Input improvements when restoring licenses.
* General optimization and bug fixes. 3.02 01/16/2022 With the internal app "Files" you can access the saved files. 3.01 10/26/2021 A new start table has been introduced.
In this table the stopped time can be assigned directly to the user.
After stopping, the app immediately calculates the target/actual time and saves it in the table.
The table is saved as a CSV file, as usual, and can be further edited with any PC. 3.00 10/18/2021 Starting from this version, the free version can be converted into a full version with the option "in-app purchases". 2.31 09/10/2021 * The entry/change of participant numbers can be done as numbers or as numbers and letters.
The selection can be changed via the settings.
* The updated help includes an example of the use of the new devices: "Bluetooth & Radio Receiver (H015) and Radio Transmitter (H016)".
* Bug fixes 2.29 09/19/2020
version 3.65
posted on 2026-09-19
Version History General optimization and bug fixes 3.65 1d ago * Starting with this version, iOS 16 or higher is required.
* General optimization and bug fixes 3.60 May 19 General optimization and bug fixes 3.56 12/02/2025 An error during the initialization of GPS has been fixed. 3.50.1 02/06/2025 * The saved files can be opened as table files.
* Optimizations and improvements 3.50 02/04/2025 Optimizations and improvements 3.45 10/02/2024 The crashes after the update to iOS 18 have been fixed. 3.40 09/18/2024 * Further optimizations added.
* Each time the program is started, it checks whether a new version is available.
This function can be deactivated via the settings. 3.37 04/26/2024 * New function for managing the license added.
If the license is already installed on 4 devices, as already known, it can no longer be installed on additional devices.
With the new "Remove license" function, the license can be removed from the device used.
The license can then be reinstalled on a new device.
* General optimization and bug fixes 3.35 03/11/2024 General optimization and bug fixes. 3.31 01/03/2024 * The stability of the Bluetooth connection with the in-house Bluetooth devices has been optimized.
* General optimization and bug fixes. 3.30 07/26/2023 Fixed an error when editing username and race name. 3.26 06/08/2023 * Some graphical improvements have been implemented in the dialogs.
* General bug fixes 3.25 05/14/2023 * Added security prompt when closing a restored Start-table and Start-table extra.
* General bug fixes 3.21 02/05/2023 * Further improvements to save the entered data from an app crash.
* Optimization and bug fixes 3.20 11/20/2022 Optimization and bug fixes 3.13 09/29/2022 General optimization and bug fixes 3.12 09/14/2022 * Fixed an error when reading race data that caused the app to crash.
* General optimization and bug fixes 3.11 06/10/2022 * All entered data is saved continuously, so that even after a crash of the app, the previous state is automatically restored.
* In the settings of the app a default username and a default race name can be entered.
If the 2 entries are present, they will be automatically added to the CSV files when saving.
* General optimization and bug fixes. 3.10 05/10/2022 * Fixed a timing error in the start table.
The time offset of daylight saving time was not taken into account.
* General optimization and bug fixes 3.03 04/26/2022 * Input improvements when restoring licenses.
* General optimization and bug fixes. 3.02 01/16/2022 With the internal app "Files" you can access the saved files. 3.01 10/26/2021 A new start table has been introduced.
In this table the stopped time can be assigned directly to the user.
After stopping, the app immediately calculates the target/actual time and saves it in the table.
The table is saved as a CSV file, as usual, and can be further edited with any PC. 3.00 10/18/2021 Starting from this version, the free version can be converted into a full version with the option "in-app purchases". 2.31 09/10/2021 * The entry/change of participant numbers can be done as numbers or as numbers and letters.
The selection can be changed via the settings.
* The updated help includes an example of the use of the new devices: "Bluetooth & Radio Receiver (H015) and Radio Transmitter (H016)".
* Bug fixes 2.29 09/19/2020
version 3.60
posted on 2026-09-12
Version History * Starting with this version, iOS 16 or higher is required.
* General optimization and bug fixes 3.60 May 19 General optimization and bug fixes 3.56 12/02/2025 An error during the initialization of GPS has been fixed. 3.50.1 02/06/2025 * The saved files can be opened as table files.
* Optimizations and improvements 3.50 02/04/2025 Optimizations and improvements 3.45 10/02/2024 The crashes after the update to iOS 18 have been fixed. 3.40 09/18/2024 * Further optimizations added.
* Each time the program is started, it checks whether a new version is available.
This function can be deactivated via the settings. 3.37 04/26/2024 * New function for managing the license added.
If the license is already installed on 4 devices, as already known, it can no longer be installed on additional devices.
With the new "Remove license" function, the license can be removed from the device used.
The license can then be reinstalled on a new device.
* General optimization and bug fixes 3.35 03/11/2024 General optimization and bug fixes. 3.31 01/03/2024 * The stability of the Bluetooth connection with the in-house Bluetooth devices has been optimized.
* General optimization and bug fixes. 3.30 07/26/2023 Fixed an error when editing username and race name. 3.26 06/08/2023 * Some graphical improvements have been implemented in the dialogs.
* General bug fixes 3.25 05/14/2023 * Added security prompt when closing a restored Start-table and Start-table extra.
* General bug fixes 3.21 02/05/2023 * Further improvements to save the entered data from an app crash.
* Optimization and bug fixes 3.20 11/20/2022 Optimization and bug fixes 3.13 09/29/2022 General optimization and bug fixes 3.12 09/14/2022 * Fixed an error when reading race data that caused the app to crash.
* General optimization and bug fixes 3.11 06/10/2022 * All entered data is saved continuously, so that even after a crash of the app, the previous state is automatically restored.
* In the settings of the app a default username and a default race name can be entered.
If the 2 entries are present, they will be automatically added to the CSV files when saving.
* General optimization and bug fixes. 3.10 05/10/2022 * Fixed a timing error in the start table.
The time offset of daylight saving time was not taken into account.
* General optimization and bug fixes 3.03 04/26/2022 * Input improvements when restoring licenses.
* General optimization and bug fixes. 3.02 01/16/2022 With the internal app "Files" you can access the saved files. 3.01 10/26/2021 A new start table has been introduced.
In this table the stopped time can be assigned directly to the user.
After stopping, the app immediately calculates the target/actual time and saves it in the table.
The table is saved as a CSV file, as usual, and can be further edited with any PC. 3.00 10/18/2021 Starting from this version, the free version can be converted into a full version with the option "in-app purchases". 2.31 09/10/2021 * The entry/change of participant numbers can be done as numbers or as numbers and letters.
The selection can be changed via the settings.
* The updated help includes an example of the use of the new devices: "Bluetooth & Radio Receiver (H015) and Radio Transmitter (H016)".
* Bug fixes 2.29 09/19/2020 Fixed a bug in the Bluetooth connection. 2.28.1 08/19/2020
version 3.56
posted on 2026-05-10
Version History General optimization and bug fixes 3.56 12/02/2025 An error during the initialization of GPS has been fixed. 3.50.1 02/06/2025 * The saved files can be opened as table files.
* Optimizations and improvements 3.50 02/04/2025 Optimizations and improvements 3.45 10/02/2024 The crashes after the update to iOS 18 have been fixed. 3.40 09/18/2024 * Further optimizations added.
* Each time the program is started, it checks whether a new version is available.
This function can be deactivated via the settings. 3.37 04/26/2024 * New function for managing the license added.
If the license is already installed on 4 devices, as already known, it can no longer be installed on additional devices.
With the new "Remove license" function, the license can be removed from the device used.
The license can then be reinstalled on a new device.
* General optimization and bug fixes 3.35 03/11/2024 General optimization and bug fixes. 3.31 01/03/2024 * The stability of the Bluetooth connection with the in-house Bluetooth devices has been optimized.
* General optimization and bug fixes. 3.30 07/26/2023 Fixed an error when editing username and race name. 3.26 06/08/2023 * Some graphical improvements have been implemented in the dialogs.
* General bug fixes 3.25 05/14/2023 * Added security prompt when closing a restored Start-table and Start-table extra.
* General bug fixes 3.21 02/05/2023 * Further improvements to save the entered data from an app crash.
* Optimization and bug fixes 3.20 11/20/2022 Optimization and bug fixes 3.13 09/29/2022 General optimization and bug fixes 3.12 09/14/2022 * Fixed an error when reading race data that caused the app to crash.
* General optimization and bug fixes 3.11 06/10/2022 * All entered data is saved continuously, so that even after a crash of the app, the previous state is automatically restored.
* In the settings of the app a default username and a default race name can be entered.
If the 2 entries are present, they will be automatically added to the CSV files when saving.
* General optimization and bug fixes. 3.10 05/10/2022 * Fixed a timing error in the start table.
The time offset of daylight saving time was not taken into account.
* General optimization and bug fixes 3.03 04/26/2022 * Input improvements when restoring licenses.
* General optimization and bug fixes. 3.02 01/16/2022 With the internal app "Files" you can access the saved files. 3.01 10/26/2021 A new start table has been introduced.
In this table the stopped time can be assigned directly to the user.
After stopping, the app immediately calculates the target/actual time and saves it in the table.
The table is saved as a CSV file, as usual, and can be further edited with any PC. 3.00 10/18/2021 Starting from this version, the free version can be converted into a full version with the option "in-app purchases". 2.31 09/10/2021 * The entry/change of participant numbers can be done as numbers or as numbers and letters.
The selection can be changed via the settings.
* The updated help includes an example of the use of the new devices: "Bluetooth & Radio Receiver (H015) and Radio Transmitter (H016)".
* Bug fixes 2.29 09/19/2020 Fixed a bug in the Bluetooth connection. 2.28.1 08/19/2020 The user name and race name are added to the saved race file name,
this allows the race organizer to better assign all files. 2.28 08/17/2020
version 3.56
posted on 2025-12-02
General optimization and bug fixes
version 3.50.1
posted on 2025-02-06
Feb 6, 2025
Version 3.50.1
An error during the initialization of GPS has been fixed.
version 3.50
posted on 2025-02-04
Feb 4, 2025
Version 3.50
* The saved files can be opened as table files.
* Optimizations and improvements
version 3.45
posted on 2024-10-02
Oct 2, 2024
Version 3.45
Optimizations and improvements
version 3.40
posted on 2024-09-18
Sep 18, 2024
Version 3.40
The crashes after the update to iOS 18 have been fixed.
version 3.37
posted on 2024-04-26
Apr 26, 2024
Version 3.37
* Further optimizations added.
* Each time the program is started, it checks whether a new version is available.
This function can be deactivated via the settings.
Disclaimer
Official App Store Link
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