# Corrigo vs PDI/Envoy HHT

The clearest difference is iOS requirement: PDI/Envoy HHT at 14.2 against Corrigo's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Corrigo ships an update every 3 months, PDI/Envoy HHT every 2 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Corrigo | PDI/Envoy HHT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (22 ratings)](https://appshunter.io/ios/app/corrigo/id1244213800/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 19 MB | 175 MB |
| Requires iOS | 16.0 | **14.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jones Lang LaSalle Incorporated](https://appshunter.io/developer/429518140) | [PDI Technologies, Inc.](https://appshunter.io/developer/1398042775) |

## What reviewers say

### Corrigo

[App page](https://appshunter.io/ios/app/corrigo/id1244213800)

Easily submit service requests for repairs or cleaning at a Corrigo-enabled facility. Scan QR codes or NFC tags for quick submissions, or check the status of existing requests. Streamline maintenance operations and ensure requests reach the right personnel.

**Highlights:** Submit service requests, Scan QR codes/NFC tags, Check request status, Review proposals, Verify completed work, Route requests to appropriate personnel

**Features:** Vision Pro support

**In-app purchases:** none


### PDI/Envoy HHT

[App page](https://appshunter.io/ios/app/pdienvoy-hht/id1495710167)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Corrigo free?

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

### Is PDI/Envoy HHT free?

PDI/Envoy HHT is free to download, with no in-app purchases.

### Do Corrigo or PDI/Envoy HHT have ads?

Neither Corrigo nor PDI/Envoy HHT shows ads.

### Which is updated more often, Corrigo or PDI/Envoy HHT?

Corrigo ships an update every 3 months, and PDI/Envoy HHT every 2 months. Most recently, Corrigo was updated on October 24, 2026 and PDI/Envoy HHT on October 29, 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.*