# Perinatal Calculators vs SimpleChime

The clearest difference is update cadence: SimpleChime at fortnightly against Perinatal Calculators's monthly. Perinatal Calculators's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Perinatal Calculators ships an update monthly, SimpleChime fortnightly. The most recent releases landed on September 24, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Perinatal Calculators | SimpleChime |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/perinatal-calculators/id959395503/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | — |
| Size | 2 MB | 51 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [David Deschamps](https://appshunter.io/developer/959395502) | [Falkondata LLC](https://appshunter.io/developer/1838920429) |

## What reviewers say

### Perinatal Calculators

[App page](https://appshunter.io/ios/app/perinatal-calculators/id959395503)

This app provides essential obstetrical and perinatal calculators for healthcare providers. It aids in patient counseling with tools for assessing risks like extreme prematurity and Down Syndrome, and managing conditions like gestational diabetes. All calculations are performed locally without an internet connection.

**Highlights:** Extreme prematurity calculator, VBAC success calculators, Down Syndrome risk assessment, Gestational diabetes insulin calculation, CCAMs CVR calculator, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### SimpleChime

[App page](https://appshunter.io/ios/app/simplechime/id6766430247)

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

**In-app purchases:** none


## Frequently asked questions

### Is Perinatal Calculators free?

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

### Is SimpleChime free?

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

### Do Perinatal Calculators or SimpleChime have ads?

Neither Perinatal Calculators nor SimpleChime shows ads.

### Which is updated more often, Perinatal Calculators or SimpleChime?

Perinatal Calculators ships an update monthly, and SimpleChime fortnightly. Most recently, Perinatal Calculators was updated on September 24, 2026 and SimpleChime on October 24, 2026.

---

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