# Postcardes vs EcoStrider

The clearest difference is update cadence: Postcardes at weekly against EcoStrider's every 6 weeks. Postcardes also leads on iOS requirement (13.0 vs 16.2). 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.

Postcardes ships an update weekly, EcoStrider every 6 weeks. The most recent releases landed on October 27, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Postcardes | EcoStrider |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 weeks |
| Size | 133 MB | 59 MB |
| Requires iOS | **13.0** | 16.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [SESPLUS MMC](https://appshunter.io/developer/1481382039) | [Taiwan Institute of Economic Research](https://appshunter.io/developer/6771647528) |

## What reviewers say

### Postcardes

[App page](https://appshunter.io/ios/app/postcardes/id6476495100)

**In-app purchases:** none


### EcoStrider

[App page](https://appshunter.io/ios/app/ecostrider/id6771647526)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Postcardes free?

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

### Is EcoStrider free?

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

### Do Postcardes or EcoStrider have ads?

Neither Postcardes nor EcoStrider shows ads.

### Which is updated more often, Postcardes or EcoStrider?

Postcardes ships an update weekly, and EcoStrider every 6 weeks. Most recently, Postcardes was updated on October 27, 2026 and EcoStrider on October 16, 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.*