TI vs Postal Time Keeper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TI
This utility app displays the current time in various unconventional formats, including decimal, hexadecimal, and Swatch Internet time. It's designed for users who appreciate unique and challenging ways to view time, with some formats requiring specialized knowledge to interpret.
- Decimal time display
- Hexadecimal time display
- Swatch Internet time
- Trigonometry clock
- PT clock
- Large, easy-to-read digits
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This clock App is meant for all those users who like to get the time in unusual or challenging ways. This App can display the time in many different ways, like for example as decimal time (which was introduced in the French Revolution), as hexedecimal time (the idea goes back to the 19th century), as "Swatch Internet time" and many others. The most challenging clocks are the trigonometry clock and the PT clock, which requires some mathematical or chemical knowledge to interpret the time correctly. This clock is for "Geeks" ;-) The App shows the time in big letters which are easy to read even from the distance. So you can use an (old) iOS device put it on a shelf so it just shows the time. Feel free to make suggestions for other "geeky" clocks I can add in the future...
Postal Time Keeper
Easily track your daily clock rings and important time stamps without manual notes. This app provides a clear 100-unit time display and allows you to search past entries by route number. Customize operations and store your barcode for quick scanner logins.
- Track clock rings
- 100-unit time display
- Search by route number
- Customizable operations
- Store barcode for scanner
- Home screen widget
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Postal Time Keeper lets you keep track of all of your important clock rings throughout the day. No more writing them down on scraps of paper and losing them! And best of all It a 100 Unit time stamp gets shown so no more checking that annoying time chart at the time clock! Postal Time Keeper keeps all of your clock rings saved in an easy to navigate format allowing you to go back to any day and see what you did. You can search by route number to see what day you did any given route. You can completely customize the list of Operations to fit your needs. As well as setting a default operation and route so you can quickly add your most commonly used clock ring. You can store your barcode for logging in and entering clockrings on your USPS Scanner. You can now keep your barcode on your iPhone Home Screen with a widget
Screenshots
Verdict
The clearest difference is rating: TI at 3.8 against Postal Time Keeper's 3.6. TI also leads on device support (4 vs 1) and iOS requirement (11.0 vs 17.0). Postal Time Keeper's advantage is chart position (#190 vs unranked). On price, review sentiment, ratings volume and update cadence 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
TI costs $0.99 and Postal Time Keeper $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TI holds the better App Store score, 3.8 against 3.6. Both are backed by a comparable volume of ratings — 8 and 7 respectively. Written reviews point the same way: 73% of TI's written reviews are positive against 67% of Postal Time Keeper's.
TI ships an update every 8 months, Postal Time Keeper every 11 months. The most recent releases landed on August 23, 2026 and July 5, 2026 respectively.
| Parameter | TI | Postal Time Keeper |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 3.8 (8 ratings) — better | 3.6 (7 ratings) |
| Positive reviews | 73.3% of reviews — better | 66.7% of reviews |
| Number of ratings | 8 — better | 7 |
| Update frequency | Every 8 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #190 — better |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Clauss | Mark Cornish |
Customer experience
TI
Postal Time Keeper
In-app purchases
TI
No in-app purchases
Postal Time Keeper
No in-app purchases









