Projecta BM500 vs SDT Calculator 速距時計算機
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Projecta BM500
This kit allows users to monitor their battery systems, displaying key information like current, voltage, state of charge, and remaining time. It is compatible with various battery types and voltages, offering accurate measurements for a comprehensive understanding of battery health.
- Real-time current monitoring up to 500A
- Supports 12V, 24V, or 48V DC battery systems
- Compatible with AGM, GEL, and LFP batteries
- Displays voltage, SOC, and time remaining
- Accurate current (+/- 0.4%) and voltage (+/- 0.3%) measurements
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TBB'battery monitor kit is composed by a battery shunt and a monitor which allow the user to fully understand his/her battery. Here is some quick facts of this kit: 1) Measurement current is up to 500A 2) Is able to work with battery (or battery bank) 12Vdc, 24Vdc or 48Vdc 3) Compatible with AGM, GEL or LFP battery 4) An elegant design monitor to display battery information such as current, voltage, SOC, time remaining etc. 5) The monitor could be installed at any location where with easy access to users 6) Measurement accuracy: Current: +/- 0.4% Voltage: +/- 0.3%
SDT Calculator 速距時計算機
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SDT Calculator — Speed, Distance & Time, but smoother Stuck between speed, time, and distance? SDT Calculator solves it instantly as you enter values. Watch a real‑time parallax visualizer respond to your inputs – making rate problems feel effortless. Switch seamlessly between metric and imperial, including knots for aviation and maritime use. Perfect for students, runners, drivers, pilots, and crew.
Screenshots
Verdict
The clearest difference is update cadence: SDT Calculator 速距時計算機 at daily against Projecta BM500's every 7 months. Projecta BM500's advantage is iOS requirement (13.0 vs 18.6). 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.
Projecta BM500 ships an update every 7 months, SDT Calculator 速距時計算機 daily. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.
| Parameter | Projecta BM500 | SDT Calculator 速距時計算機 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 7 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 24 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | TBB Power Co., Ltd | Lap Tak Cheung |
In-app purchases
Projecta BM500
No in-app purchases
SDT Calculator 速距時計算機
No in-app purchases
Questions
Is Projecta BM500 free?
Is SDT Calculator 速距時計算機 free?
Do Projecta BM500 or SDT Calculator 速距時計算機 have ads?
Which is updated more often, Projecta BM500 or SDT Calculator 速距時計算機?
Other comparisons
