IWOS vs Shift Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IWOS
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Distribution Overhead Line Monitoring & Analytics Fault Detection, AI-enabled Preventive Grid Analytics Consisting of overhead line sensor, concentrator and analytics platform, the InHand Wireless Overhead Line System (IWOS) helps utilities detect & locate faults, reduce power outage, and move from reactive to preventive maintenance. The IWOS is field proven by more than 75,000 line sensors installations by 2018. Leveraging big data analytics and artificial intelligence, the IWOS has accumulated more than 25 million waveform data of line events and successfully detected more than 32,000 faults including ground faults, short circuit faults, inrush current, lightning, and more.
Shift Calendar
This calendar app is designed for shift workers, offering automatic calculation of time off for work cycles. It also includes additional tools specifically for managing shift-related schedules.
- Shift worker focus
- Automatic time off calculation
- Work cycle scheduling
- Shift-related tools
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Shift Calendar is a calendar app that focuses on shift workers, and it can automatically calculate the time off for a work cycle. And some other shift-related tools are provided.
Screenshots
Verdict
The clearest difference is in-app purchases: IWOS at none against Shift Calendar's 1. Shift Calendar's advantage is update cadence (monthly vs every 3 months) and iOS requirement (12.0 vs 14.0). On price, ads 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. Shift Calendar sells 1 one-off in-app purchase. IWOS asks for nothing beyond the download.
IWOS ships an update every 3 months, Shift Calendar monthly. The most recent releases landed on September 10, 2026 and June 4, 2026 respectively.
| Parameter | IWOS | Shift Calendar |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 42 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Beijing Inhand Networks Technology co.,Ltd. | 晨 房 |
In-app purchases
IWOS
No in-app purchases
Shift Calendar
- Shift Calendar Premium$9.99
