# Control AMI vs WIMS Rio

The clearest difference is update cadence: WIMS Rio at every 2 months against Control AMI's every 51 months. 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.

Control AMI ships an update every 51 months, WIMS Rio every 2 months. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Control AMI | WIMS Rio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.8 (14 ratings)](https://appshunter.io/ios/app/wims-rio/id1573801194/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 51 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 0 MB | 56 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AMI Global](https://appshunter.io/developer/1290651515) | [Aquatic Informatics](https://appshunter.io/developer/1573801196) |

## What reviewers say

### Control AMI

[App page](https://appshunter.io/ios/app/control-ami/id1495172088)

**Features:** macOS Compatibility

**In-app purchases:** none


### WIMS Rio

[App page](https://appshunter.io/ios/app/wims-rio/id1573801194)

Streamline instrument readings from the field with this mobile app. Create and share Rio sheets, allowing anyone with access to update measurements. Readings sync automatically, and you can view historical data and recent updates.

**Highlights:** Update instrument readings from the field, Create and share Rio sheets, Automatic measurement syncing, View past measurements, See updated entries

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Control AMI free?

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

### Is WIMS Rio free?

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

### Do Control AMI or WIMS Rio have ads?

Neither Control AMI nor WIMS Rio shows ads.

### Which is updated more often, Control AMI or WIMS Rio?

Control AMI ships an update every 51 months, and WIMS Rio every 2 months. Most recently, Control AMI was updated on October 2, 2026 and WIMS Rio on October 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.*