Udan HESS vs S
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Udan HESS
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Udan ESS App is for household energy storage users to view power generation data. It has convenient functions such as real-time status monitoring and operation and maintenance management. Udan ESS App is the battery application at your fingertips
S
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Photovoltaic power plant operation management, convenient and quick view of the power plant. Master the status of the power station in real time. Every day, every month, every year, the power generation is clear at a glance.
Screenshots
Verdict
Udan HESS and S are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 10, 2026 and May 22, 2026 respectively.
| Parameter | Udan HESS | S |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 | 12.4 — better |
| Further details — not scored | ||
| Size | 33 MB | 59 MB |
| Age rating | 4+ | 17+ |
| Developer | Anhui Udan Technology Co., Ltd. | Zhejiang Chisage New Energy Technology Co., Ltd |
In-app purchases
Udan HESS
No in-app purchases
S
No in-app purchases
