Spiral Engineering vs YEJING Smart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spiral Engineering
This utility app allows for firmware over-the-air updates and professional parameter adjustments for connected devices. Users can fine-tune settings such as PWM, high and low trim, fading time, and auto brightness levels.
- Firmware OTA updates
- Professional parameter setting
- PWM adjustment
- High and low trim control
- Fading time configuration
- Auto brightness level setting
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Litetrace Engineering App based on User's App adding firmware OTA and Professional parameter setting like PWM, high and low trim, fading time, auto brightness level
YEJING Smart
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YEJING Smart contributes to the intellectualization of industrial lighting 1、Remote centralized control to control the operation of lamps anytime and anywhere; 2、Set various application scenarios and customize energy-saving optimization schemes; 3、The energy-saving optimization results are controlled in real time and the analysis data are clear at a glance.
Screenshots
Verdict
The clearest difference is update cadence: Spiral Engineering at every 5 weeks against YEJING Smart's every 25 months. 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.
Spiral Engineering ships an update every 5 weeks, YEJING Smart every 25 months. The most recent releases landed on October 12, 2026 and September 14, 2026 respectively.
| Parameter | Spiral Engineering | YEJING Smart |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 weeks — better | Every 25 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 32 MB | 151 MB |
| Age rating | 4+ | 4+ |
| Developer | Litetrace Inc | Suzhou Yejing Lighting Energy Saving Technology Co., Ltd |
In-app purchases
Spiral Engineering
No in-app purchases
YEJING Smart
No in-app purchases
Questions
Is Spiral Engineering free?
Is YEJING Smart free?
Do Spiral Engineering or YEJING Smart have ads?
Which is updated more often, Spiral Engineering or YEJING Smart?
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