Trainer Stopwatch vs Blackboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trainer Stopwatch
Manage multiple timers simultaneously for sports training. Start and stop up to 99 stopwatches at once, individually or together. Export results as a CSV file for analysis.
- Up to 99 stopwatches
- Simultaneous or individual start/stop
- Profile creation for named stopwatches
- Email results as CSV
- Excel import ready format
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A stop watch for the Trainer. Normally a Trainer needs many stop watch's to manage the time control over a team running, swimming or wat ever at the same time. Here you can have up to 99 stop watch's at the same time. Start them at the same time or individually. After endt session, result can be send by email as CSV file ready to import into Excel. As an feature you can use Profiles to add names to the first 8 Stop watch's.
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 price: Blackboard at Free against Trainer Stopwatch's $0.99. Blackboard also leads on rating (2.0 vs 1.0). Trainer Stopwatch's advantage is in-app purchases (none vs 1) and ads (none vs shown). On review sentiment, ratings volume, update cadence 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; Trainer Stopwatch costs $0.99 up front. Blackboard sells 1 one-off in-app purchase. Trainer Stopwatch asks for nothing beyond the download.
Blackboard holds the better App Store score, 2.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.
Trainer Stopwatch ships an update every 6 months, Blackboard every 4 months. The most recent releases landed on June 1, 2026 and September 12, 2026 respectively.
| Parameter | Trainer Stopwatch | Blackboard |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 1.0 (1 ratings) | 2.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 6 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 | 12.2 — better | 16.0 |
| Further details — not scored | ||
| Size | 12 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Frank Kalhoj | Filippo Gozza |
Customer experience
Trainer Stopwatch
Blackboard
In-app purchases
Trainer Stopwatch
No in-app purchases
Blackboard
- Full version$2.99
Questions
Is Trainer Stopwatch free?
Is Blackboard free?
Which has better reviews, Trainer Stopwatch or Blackboard?
Do Trainer Stopwatch or Blackboard have ads?
Which is updated more often, Trainer Stopwatch or Blackboard?
Other comparisons
