# KARVI vs NeoFast Calc

The clearest difference is in-app purchases: KARVI at none against NeoFast Calc's 2. NeoFast Calc's advantage is update cadence (fortnightly vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. NeoFast Calc sells 2 in-app purchases, starting at $5.99 per month. KARVI asks for nothing beyond the download.

KARVI ships an update every 5 months, NeoFast Calc fortnightly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | KARVI | NeoFast Calc |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 30 MB | 195 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Mis Pediatras Nuevo León S.R.L. de C.V.](https://appshunter.io/developer/1712196494) | [Ponto Direto Tech Ltda](https://appshunter.io/developer/1789425714) |

## What reviewers say

### KARVI

[App page](https://appshunter.io/ios/app/karvi/id6469569900)

**Features:** macOS Compatibility

**In-app purchases:** none


### NeoFast Calc

[App page](https://appshunter.io/ios/app/neofast-calc/id6740295230)

This medical reference tool simplifies daily tasks for healthcare professionals caring for newborns and children. It provides evidence-based prescribing assistance, drug interaction information, and detailed drug data. The app aims to enhance safety and efficiency during medical duties.

**Highlights:** Prescriptive drug dosing assistance, Drug interaction details, Adverse reaction information, International brand names, Dose adjustment for renal/hepatic impairment, Extensive drug presentation database

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NeoFast® - Monthly Plan | $5.99 | per month |
| NeoFast® - Yearly Plan | $59.99 | per year |


## Frequently asked questions

### Is KARVI free?

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

### Is NeoFast Calc free?

NeoFast Calc is free to download, with in-app purchases available.

### Do KARVI or NeoFast Calc have ads?

Neither KARVI nor NeoFast Calc shows ads.

### Which is updated more often, KARVI or NeoFast Calc?

KARVI ships an update every 5 months, and NeoFast Calc fortnightly. Most recently, KARVI was updated on October 25, 2026 and NeoFast Calc on October 28, 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.*