# Naht vs IV drip calculation

The clearest difference is in-app purchases: Naht at none against IV drip calculation's 1. Naht also leads on iOS requirement (13.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. IV drip calculation sells 1 one-off in-app purchase. Naht asks for nothing beyond the download.

Naht ships an update every 2 weeks, IV drip calculation monthly. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Naht | IV drip calculation |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 78 MB | 8 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 12+ | 12+ |
| Developer | [AGRI CARE, K.K.](https://appshunter.io/developer/1609401324) | [BLUE COMET LABS LLC](https://appshunter.io/developer/1492055170) |

## What reviewers say

### Naht

[App page](https://appshunter.io/ios/app/naht/id1621824035)

**Features:** macOS Compatibility

**In-app purchases:** none


### IV drip calculation

[App page](https://appshunter.io/ios/app/iv-drip-calculation-ondrip/id6483362139)

This app simplifies IV drip rate calculation and adjustment using intuitive vibration feedback. It allows saving common settings and synchronizing them between iPhone and Apple Watch, aiding healthcare professionals in providing efficient patient care.

**Highlights:** Calculate drip rate, Vibration-based drip adjustment, Save infusion settings, Sync between iPhone and Apple Watch, Intuitive UI

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OnDrip Pro - Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is Naht free?

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

### Is IV drip calculation free?

IV drip calculation is free to download, with in-app purchases available.

### Do Naht or IV drip calculation have ads?

Neither Naht nor IV drip calculation shows ads.

### Which is updated more often, Naht or IV drip calculation?

Naht ships an update every 2 weeks, and IV drip calculation monthly. Most recently, Naht was updated on October 9, 2026 and IV drip calculation on October 24, 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.*