Hour Calc vs TimeStack Pilot
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hour Calc
Converts time between hours:minutes and decimal hours formats. Features include easy input, minute validation, and autocompletion for readability. Supports iPhone and iPad with autosized tables.
- Hours:minutes to decimal hours conversion
- Decimal hours to hours:minutes conversion
- Easy number keypad input
- Minute input validation
- Autocompletion for readability
- Native iPad support
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A small utility that converts hours:minutes format to decimal hours (h.xx), also called industrial hours, and vice versa. Features: • Easy input with number keypad on iPhone and iPod Touch • Check for minute input and warning on more than 59min • Autocompletion if less than 10min are entered for better readability (5h 2min will show as 5:02) • Independent tables for both calculators • Possibility to delete single values in both tables for correction • Clear button for complete deletion of tables • Autosized tables on iPhone 5 showing 5 entries • Native iPad support • 100% add free Please give a good rating if you like the app to support further development. For any questions send a email.
TimeStack Pilot
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TimeStack Pilot is a clean and practical calculator for structured time values. It helps you calculate and convert day:hour:minute, hour:minute, minutes, and optional second-based time values. Designed for aviation, logbooks, block times, duty calculations, and other time-based tasks, TimeStack Pilot focuses on fast input and clear results. Features: • Fast calculator for structured time values • Supports d:h:m, h:m, minutes, and optional seconds • Clear multi-format result display • Customizable display settings • Optional background image • App language selection • No account required • Works fully on device • No tracking TimeStack Pilot is built for quick input, flexible display options, and distraction-free daily use.
Screenshots
Verdict
The clearest difference is price: TimeStack Pilot at Free against Hour Calc's $0.99. TimeStack Pilot also leads on update cadence (every 3 days vs every 3 months). Hour Calc's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 26.0). On ads and in-app purchases 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
TimeStack Pilot is free to download; Hour Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Hour Calc ships an update every 3 months, TimeStack Pilot every 3 days. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.
| Parameter | Hour Calc | TimeStack Pilot |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 87.5% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 8 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Guenter Freytag | Christoph Kindl |
In-app purchases
Hour Calc
No in-app purchases
TimeStack Pilot
No in-app purchases
Questions
Is Hour Calc free?
Is TimeStack Pilot free?
Do Hour Calc or TimeStack Pilot have ads?
Which is updated more often, Hour Calc or TimeStack Pilot?
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