# PRN Graph vs Iv

The clearest difference is price: PRN Graph at Free against Iv's $1.99. PRN Graph also leads on update cadence (every 3 months vs every 10 months). Iv's advantage is iOS requirement (11.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

PRN Graph is free to download; Iv costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PRN Graph ships an update every 3 months, Iv every 10 months. The most recent releases landed on September 8, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | PRN Graph | Iv |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Size | 6 MB | 7 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Glamorous Goat B.V.](https://appshunter.io/developer/843276618) | [Rimon](https://appshunter.io/developer/590338647) |

## What reviewers say

### PRN Graph

[App page](https://appshunter.io/ios/app/prn-graph/id843276615)

**Features:** macOS Compatibility

**In-app purchases:** none


### Iv

[App page](https://appshunter.io/ios/app/iv-calculator/id1031858167)

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

**In-app purchases:** none


## Frequently asked questions

### Is PRN Graph free?

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

### Is Iv free?

Iv costs $1.99, with no in-app purchases.

### Do PRN Graph or Iv have ads?

Neither PRN Graph nor Iv shows ads.

### Which is updated more often, PRN Graph or Iv?

PRN Graph ships an update every 3 months, and Iv every 10 months. Most recently, PRN Graph was updated on September 8, 2026 and Iv on September 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.*