# OB Calc (cloud) vs ihmsonline

The clearest difference is in-app purchases: ihmsonline at none against OB Calc (cloud)'s 2. ihmsonline also leads on update cadence (every 6 weeks vs every 3 months) and iOS requirement (11.0 vs 18.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. OB Calc (cloud) sells 2 in-app purchases, starting at $2.99 per month. ihmsonline asks for nothing beyond the download.

OB Calc (cloud) ships an update every 3 months, ihmsonline every 6 weeks. Both last shipped on September 21, 2026.

## The numbers

| Metric | OB Calc (cloud) | ihmsonline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ob-calc-cloud/id1495610465/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 28 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Glen Botha](https://appshunter.io/developer/943181947) | [RajCOMP Info Services Ltd.](https://appshunter.io/developer/1051272402) |

## What reviewers say

### OB Calc (cloud)

[App page](https://appshunter.io/ios/app/ob-calc-cloud/id1495610465)

This medical app helps obstetricians efficiently calculate key patient test date windows. It offers multiple calculation methods and allows for saving patient data and generating PDF reports. A free trial is available, followed by a subscription for full access.

**Highlights:** LMP, EDC, Ultrasound, CRL, and IVF calculations, Customizable test date ranges, Cross-device data syncing, PDF report generation, Save individual patient data

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Premium (Annual) | $29.99 | per year |


### ihmsonline

[App page](https://appshunter.io/ios/app/ihmsonline/id1660390700)

Book appointments at Rajasthan government healthcare facilities, including hospitals and medical colleges. Access and print lab reports using your bill number and HID. Check blood availability across institutions.

**Highlights:** Book appointments at government hospitals, Access and print lab reports, Check blood availability, Supports District Hospitals, Medical Colleges, PHC, CHC, View reports via bill number and HID

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OB Calc (cloud) free?

OB Calc (cloud) is free to download, with in-app purchases available.

### Is ihmsonline free?

ihmsonline is free to download, with no in-app purchases.

### Do OB Calc (cloud) or ihmsonline have ads?

Neither OB Calc (cloud) nor ihmsonline shows ads.

### Which is updated more often, OB Calc (cloud) or ihmsonline?

OB Calc (cloud) ships an update every 3 months, and ihmsonline every 6 weeks. Most recently, OB Calc (cloud) was updated on September 21, 2026 and ihmsonline on September 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*