小莺v4 vs Prometheus Mobile STO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
小莺v4
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View Nightingale monitoring data on your phone
Prometheus Mobile STO
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Prometheus STO Mobile is a Prometheus Group Platform that is an easy-to-use interface and framework to address shut-down, turn-around, and outages of heavy assets in various industries. Prometheus Group is the leading enterprise asset management software solution provider, covering your plant maintenance, operations, and safety needs from planning to execution and beyond.
Screenshots
Verdict
The clearest difference is update cadence: 小莺v4 at every 6 days against Prometheus Mobile STO's every 3 months. Prometheus Mobile STO's advantage is iOS requirement (11.0 vs 14.0). 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.
小莺v4 ships an update every 6 days, Prometheus Mobile STO every 3 months. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.
| Parameter | 小莺v4 | Prometheus Mobile STO |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 41 MB |
| Age rating | 4+ | 17+ |
| Developer | 峰 高 | PROMETHEUS GROUP, INC. |
In-app purchases
小莺v4
No in-app purchases
Prometheus Mobile STO
No in-app purchases
