# Prompt Flex vs Sim Vitals

The clearest difference is in-app purchases: Prompt Flex at none against Sim Vitals's 4. Prompt Flex also leads on iOS requirement (5.1.1 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sim Vitals sells 4 in-app purchases, starting at $0.99 per month. Prompt Flex asks for nothing beyond the download.

Prompt Flex ships an update every 11 months, Sim Vitals every 9 months. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Prompt Flex | Sim Vitals |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/prompt-flex/id989972698/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 9 months** |
| Monetization | Free | — |
| Size | 49 MB | 68 MB |
| Requires iOS | **5.1.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Limbs and Things](https://appshunter.io/developer/989972697) | [Benmed Technologies Limited](https://appshunter.io/developer/1588959872) |

## What reviewers say

### Prompt Flex

[App page](https://appshunter.io/ios/app/prompt-flex/id989972698)

This app simulates birthing scenarios for midwifery trainees and trainers, allowing for step-by-step recording and time tracking of deliveries. It can also monitor traction force during difficult deliveries when paired with a compatible simulator.

**Highlights:** Birthing scenario simulation, Step-by-step intervention recording, Delivery time tracking, Traction force monitoring, Meter mode for force practice, Email results for debriefing

**Features:** macOS Compatibility

**In-app purchases:** none


### Sim Vitals

[App page](https://appshunter.io/ios/app/sim-vitals/id1659299574)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sim Vitals | $0.99 | per month |
| 3 Monthly | $1.99 | per 3 months |
| Annual Subscription | $4.99 | per year |
| Lifetime Access | $7.99 | one-time |


## Frequently asked questions

### Is Prompt Flex free?

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

### Is Sim Vitals free?

Sim Vitals is free to download, with in-app purchases available.

### Do Prompt Flex or Sim Vitals have ads?

Neither Prompt Flex nor Sim Vitals shows ads.

### Which is updated more often, Prompt Flex or Sim Vitals?

Prompt Flex ships an update every 11 months, and Sim Vitals every 9 months. Most recently, Prompt Flex was updated on October 2, 2026 and Sim Vitals on October 6, 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.*