# PolyInvert vs ISINAC AR

The clearest difference is in-app purchases: ISINAC AR at none against PolyInvert's 1. ISINAC AR also leads on ads (none vs shown). PolyInvert's advantage is update cadence (daily vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PolyInvert sells 1 one-off in-app purchase. ISINAC AR asks for nothing beyond the download.

PolyInvert ships an update daily, ISINAC AR fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PolyInvert | ISINAC AR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Fortnightly |
| Size | 8 MB | 17 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ADAM MICHAEL OGDEN](https://appshunter.io/developer/1854648813) | [ISINAC ACOUSTIC WORLD SLU](https://appshunter.io/developer/6773112060) |

## What reviewers say

### PolyInvert

[App page](https://appshunter.io/ios/app/polyinvert/id6755578020)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### ISINAC AR

[App page](https://appshunter.io/ios/app/isinac-ar/id6773112058)

**In-app purchases:** none


## Frequently asked questions

### Is PolyInvert free?

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

### Is ISINAC AR free?

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

### Do PolyInvert or ISINAC AR have ads?

PolyInvert shows ads; ISINAC AR does not.

### Which is updated more often, PolyInvert or ISINAC AR?

PolyInvert ships an update daily, and ISINAC AR fortnightly. Most recently, PolyInvert was updated on October 30, 2026 and ISINAC AR on October 31, 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.*