# AMA vs CIER

The clearest difference is update cadence: AMA at every 3 weeks against CIER's every 14 months. CIER's advantage is 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.

AMA ships an update every 3 weeks, CIER every 14 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | AMA | CIER |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 14 months |
| Monetization | Free | — |
| Size | 141 MB | 39 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Atoma Tecnologia Ltda](https://appshunter.io/developer/1762044226) | [Simone Antaki Moussatche](https://appshunter.io/developer/978186657) |

## What reviewers say

### AMA

[App page](https://appshunter.io/ios/app/ama-agentes-do-meio-ambiente/id1532303499)

This app promotes sustainable habits through gamified environmental actions aligned with UN Sustainable Development Goals. Earn cashback for your achievements, connect with your local community, and contribute to positive change.

**Highlights:** Gamified sustainability challenges, Sustainable Development Goals alignment, Cashback rewards for actions, Local community social network, Progress tracking and achievements

**In-app purchases:** none


### CIER

[App page](https://appshunter.io/ios/app/cier/id1599148206)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AMA free?

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

### Is CIER free?

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

### Do AMA or CIER have ads?

Neither AMA nor CIER shows ads.

### Which is updated more often, AMA or CIER?

AMA ships an update every 3 weeks, and CIER every 14 months. Most recently, AMA was updated on November 3, 2026 and CIER on November 3, 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.*