Checkpoint Clock vs Blackboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Checkpoint Clock
This app functions as a precise timing device for Time-Speed-Distance road rallies. It records split times with optional car numbers and allows for dynamic adjustment of time units. It can also serve as a time reference for 'Seat of the Pants' rally classes.
- Split time recording
- Optional car number logging
- Scrollable log area
- Dynamic time unit adjustment
- Time of day clock synchronization
- Decimal minute support
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The Richta Rally Checkpoint Clock is an application designed as a timing device for use at checkpoints during Time-Speed-Distance road rallys. It can also be used as a time reference for Class B or "Seat of the Pants" rally classes. When the "Split" button is pressed the clock records the time of the split in a scrollable log area at the bottom of the display. An associated car number can optionally be recorded as well. Log entries can be reviewed by scrolling the screen and individual log entries may be deleted. The clock can be dynamically changed to record in seconds, tenths of a second, or hundredths of a minute (decimal minutes). A facility is provided to adjust the time of day clock independently of the devices clock so that the app can be synchronized to an external time reference without changing the device's clock. *** Note *** The accuracy of the clock over time, sometimes called drift, depends on the accuracy of the underlying hardware.
Blackboard
A straightforward stopwatch app featuring oversized digits for easy visibility. It offers single-button control for starting, stopping, and resetting. With optional Bluetooth integration and a photocell, it can function as a race display, expanding its utility.
- Oversized digits
- Single-button control (start, stop, reset)
- Bluetooth device integration
- Photocell compatibility
- External Bluetooth button support
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Blackboard-Stopwatch This app is a simple stopwatch with very large numbers. The app has only one button with 4 functions: start, stop, pause and reset. In conjunction with my Bluetooth device and a photocell it can be a good display panel for any type of race. In this way, the use has practically no limits. Advertising can be deactivated via the "In-app purchases" option. For the start/stop can be used an external Bluetooth-button. Further information at: http://filippo-software.de Supported languages: German, Italian, English
Screenshots
Verdict
The clearest difference is review sentiment: Checkpoint Clock at 75% against Blackboard's 0%. Checkpoint Clock also leads on rating (4.0 vs 2.0) and in-app purchases (none vs 1). Blackboard's advantage is price (Free vs $3.00) and update cadence (every 4 months vs every 31 months). On ratings volume 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
Blackboard is free to download; Checkpoint Clock costs $3.00 up front. Blackboard sells 1 one-off in-app purchase. Checkpoint Clock asks for nothing beyond the download.
Checkpoint Clock holds the better App Store score, 4.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 75% of Checkpoint Clock's written reviews are positive against 0% of Blackboard's.
Checkpoint Clock ships an update every 31 months, Blackboard every 4 months. The most recent releases landed on June 9, 2026 and September 12, 2026 respectively.
| Parameter | Checkpoint Clock | Blackboard |
|---|---|---|
| Price | $3.00 | Free — better |
| Rating | 4.0 (1 ratings) — better | 2.0 (2 ratings) |
| Positive reviews | 75.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 31 months | Every 4 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 9 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | David Bireta | Filippo Gozza |
Customer experience
Checkpoint Clock
Blackboard
In-app purchases
Checkpoint Clock
No in-app purchases
Blackboard
- Full version$2.99
Questions
Is Checkpoint Clock free?
Is Blackboard free?
Which has better reviews, Checkpoint Clock or Blackboard?
Do Checkpoint Clock or Blackboard have ads?
Which is updated more often, Checkpoint Clock or Blackboard?
Other comparisons
