# Prompt Flex vs Onflow

The clearest difference is in-app purchases: Prompt Flex at none against Onflow's 2. Prompt Flex also leads on iOS requirement (5.1.1 vs 15.1). Onflow's advantage is update cadence (every 5 days vs every 11 months). On price, ads and device support there is nothing between them.

Both are free to download. Onflow sells 2 in-app purchases, starting at $7.99 per month. Prompt Flex asks for nothing beyond the download.

Prompt Flex ships an update every 11 months, Onflow every 5 days. The most recent releases landed on October 21, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Prompt Flex | Onflow |
| --- | --- | --- |
| 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 5 days** |
| Monetization | Free | — |
| Size | 49 MB | 46 MB |
| Requires iOS | **5.1.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Limbs and Things](https://appshunter.io/developer/989972697) | [JACOB EDWARD ALLEN TENHET](https://appshunter.io/developer/6780275178) |

## 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


### Onflow

[App page](https://appshunter.io/ios/app/onflow-visual-routines/id6780275176)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Onflow Family (Monthly) | $7.99 | per month |
| Onflow Family (Annual) | $59.99 | per year |


## Frequently asked questions

### Is Prompt Flex free?

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

### Is Onflow free?

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

### Do Prompt Flex or Onflow have ads?

Neither Prompt Flex nor Onflow shows ads.

### Which is updated more often, Prompt Flex or Onflow?

Prompt Flex ships an update every 11 months, and Onflow every 5 days. Most recently, Prompt Flex was updated on October 21, 2026 and Onflow on October 12, 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.*