# i vs Engeman® Hidrolight

The clearest difference is update cadence: Engeman® Hidrolight at every 6 months against i's every 15 months. Engeman® Hidrolight also leads on iOS requirement (11.0 vs 13.0). 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.

i ships an update every 15 months, Engeman® Hidrolight every 6 months. The most recent releases landed on July 4, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | i | Engeman® Hidrolight |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 6 months** |
| Size | 161 MB | 123 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [cbre servicos do brasil ltda](https://appshunter.io/developer/1441662007) | [Engeman®](https://appshunter.io/developer/1648906158) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-pms/id1506658063)

**In-app purchases:** none


### Engeman® Hidrolight

[App page](https://appshunter.io/ios/app/engeman-hidrolight/id6736627072)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is i free?

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

### Is Engeman® Hidrolight free?

Engeman® Hidrolight is free to download, with no in-app purchases.

### Do i or Engeman® Hidrolight have ads?

Neither i nor Engeman® Hidrolight shows ads.

### Which is updated more often, i or Engeman® Hidrolight?

i ships an update every 15 months, and Engeman® Hidrolight every 6 months. Most recently, i was updated on July 4, 2026 and Engeman® Hidrolight on September 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*