# Donaldson Hy vs ExitFlex

The clearest difference is update cadence: ExitFlex at every 2 months against Donaldson Hy's every 7 months. Donaldson Hy's advantage is iOS requirement (12.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Donaldson Hy ships an update every 7 months, ExitFlex every 2 months. The most recent releases landed on September 17, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Donaldson Hy | ExitFlex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/donaldson-hy-pro-solutions/id509664703/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 26 MB | 19 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hy-Pro Filtration](https://appshunter.io/developer/509664706) | [Fugumobile](https://appshunter.io/developer/324670374) |

## What reviewers say

### Donaldson Hy

[App page](https://appshunter.io/ios/app/donaldson-hy-pro-solutions/id509664703)

This tool helps calculate hydraulic component contamination levels and flow rates. It also features a viscosity calculator and an element lookup for upgrades or replacements.

**Highlights:** Contamination calculation (Lbs or Kg), Flow rate calculation, Viscosity calculator, Element interchange/cross-reference, Unit of measurement selection

**In-app purchases:** none


### ExitFlex

[App page](https://appshunter.io/ios/app/exitflex/id1627424923)

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

**In-app purchases:** none


## Frequently asked questions

### Is Donaldson Hy free?

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

### Is ExitFlex free?

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

### Do Donaldson Hy or ExitFlex have ads?

Neither Donaldson Hy nor ExitFlex shows ads.

### Which is updated more often, Donaldson Hy or ExitFlex?

Donaldson Hy ships an update every 7 months, and ExitFlex every 2 months. Most recently, Donaldson Hy was updated on September 17, 2026 and ExitFlex on September 8, 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.*