iPTR4D vs Bus Sign
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iPTR4D
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iPTR4D APP is a personal track logger for your smartphone. You may upload the logged data to iDiary4D (a window's application) in order to manage your daily activities and all kinds of digital files. Please refer to the following Site for more information and free download of iDiary4D. (https://www.Life4D.com.tw) Product features: 1. Automatic logging all your tracks. 2. EaSy to use. 3. Three logging modes for varies activity. 4. Lock key to prevent pressed by mistake. Operation: 1. Select one of the three logging modes. 2. Press Start key to start logging. 3. Press Stop key to stop logging. 4. Press Lock key to disable all function keys except Unlock key. 5. Press Unlock key to enable all keys. 6. Press Delete key to erase all track record. 7. Click the top-right button to mail the trace file. Note: 1. Before start logging you need to make sure that location service is ON. 2. All disabled buttons are for iPTR4D plus only. 3. About the app location permissions, Please select the allowing forever option to continue service in the background.
Bus Sign
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BusSign — the simple, practical real-time bus app for Hong Kong. Pick a stop, open a route, see live arrival times. Version 1.0.1 adds Dynamic Island journey tracking and a choose-your-alighting-stop flow so your commute stays clear. KEY FEATURES • Live bus arrival times (ETA) • KMB, Citybus, NLB and more route data • Map pick / search for nearby stops and routes • Route board: this-stop ETAs, passed stops, multiple departures • Choose your alighting stop; after boarding, follow arrival time to get-off • Dynamic Island / Live Activities — keep the route on the Island (supported iPhones) • Manual “I’m on board” plus optional GPS assist (permission required) • Clean UI · Traditional Chinese & English • Built for daily commuting and visitors No account required. Free to download — open the map and go. Never guess the next bus again.
Screenshots
Verdict
The clearest difference is update cadence: Bus Sign at every 11 days against iPTR4D's every 4 months. iPTR4D's advantage is iOS requirement (10.0 vs 15.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
iPTR4D ships an update every 4 months, Bus Sign every 11 days. The most recent releases landed on September 28, 2026 and September 30, 2026 respectively.
| Parameter | iPTR4D | Bus Sign |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | RITI Technology Inc. | Mak Yun Fai |
In-app purchases
iPTR4D
No in-app purchases
Bus Sign
No in-app purchases







