Ruler Box vs LTW BMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ruler Box
Learn to effectively use various types of rulers with practical examples and user cases. This app introduces over ten different rulers, with more measurement tools planned for future updates.
- Learn ruler usage
- Practical user cases
- Over ten rulers included
- Caliper measurement tools
- Upcoming ruler types
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Do you want to learn how to use the rulers? There are many rulers in the world.And also we should learn how to use them. Here we get some rulers which include some user cases.I think it can help your to lean how to use the rulers! Now there are over ten rulers!!!! more and more kinds of rulers（caliper） are comming soon!!
LTW BMS
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The LTW BMS is connected to the battery pack through Bluetooth to monitor the status of the battery pack and provide monitoring means for the management of the lithium battery system. 1. Real-time display of SOC, voltage, current, temperature and other battery pack information in the form of ring and digital display; 2. Displays the real-time voltage of a single battery, protection status and alarm status of the battery string. 3. Display the status of the charge/discharge switch and battery balance.
Screenshots
Verdict
The clearest difference is price: LTW BMS at Free against Ruler Box's $0.99. Ruler Box's advantage is update cadence (every 7 months vs every 14 months). On ads, in-app purchases, device support and iOS requirement 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
LTW BMS is free to download; Ruler Box costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ruler Box ships an update every 7 months, LTW BMS every 14 months. The most recent releases landed on October 23, 2026 and October 11, 2026 respectively.
| Parameter | Ruler Box | LTW BMS |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.3 (94 ratings) — better | — |
| Positive reviews | 45.5% of reviews | — |
| Number of ratings | 94 — better | — |
| Update frequency | Every 7 months — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 9.0 |
| Further details — not scored | ||
| Size | 16 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | 志荣 杨 | Shenzhen LTW Electronic Technology Co., Ltd. |
In-app purchases
Ruler Box
No in-app purchases
LTW BMS
No in-app purchases
