Rain Harvesting vs OMC Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rain Harvesting
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Welcome to Rain Harvesting – your complete rainwater tank monitoring solution. Using this app, you can: • Check your tank’s water level from anywhere at any time when connected to Bluetooth, Satellite, NB-IoT or Sigfox®*. • Track your tank level progress over time. • Stay updated on water flows. • Connect multiple tanks and gauges. • Share tata with your colleagues and friends. For local connectivity, simply connect to Bluetooth and check your tank level whenever you like. For remote connectivity, connect to the NB-IoT* or Satellite* network and check your tank level anywhere. * Paid subscription required
OMC Mobile
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OMC Mobile serves as an “assistant in your pocket”, drawing attention to time-sensitive information that can be quickly scanned, alarmed, shared, and acted upon. Time sensitive information includes marine weather and passage planning data specific to your port and next vessel.
Screenshots
Verdict
Rain Harvesting and OMC Mobile 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.
Rain Harvesting ships an update every 2 months, OMC Mobile every 3 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | Rain Harvesting | OMC Mobile |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 55 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Rain Harvesting Pty LTD | OMC International Pty Ltd |
In-app purchases
Rain Harvesting
No in-app purchases
OMC Mobile
No in-app purchases
Questions
Is Rain Harvesting free?
Is OMC Mobile free?
Do Rain Harvesting or OMC Mobile have ads?
Which is updated more often, Rain Harvesting or OMC Mobile?
Other comparisons
