# Nano Trener vs EchoCal

The clearest difference is in-app purchases: Nano Trener at none against EchoCal's 2. Nano Trener also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. EchoCal sells 2 in-app purchases, starting at $3.99 per month. Nano Trener asks for nothing beyond the download.

Nano Trener ships an update every 5 weeks, EchoCal every 3 weeks. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Nano Trener | EchoCal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 23 MB | 49 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [IMG S.A.](https://appshunter.io/developer/1381539018) | [JAKUB PIGIEL](https://appshunter.io/developer/1890632501) |

## What reviewers say

### Nano Trener

[App page](https://appshunter.io/ios/app/nano-trener/id6449263988)

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

**In-app purchases:** none


### EchoCal

[App page](https://appshunter.io/ios/app/echocal/id6761645536)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EchoCal Premium | $3.99 | per month |
| EchoCal Premium | $29.99 | per year |


## Frequently asked questions

### Is Nano Trener free?

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

### Is EchoCal free?

EchoCal is free to download, with in-app purchases available.

### Do Nano Trener or EchoCal have ads?

EchoCal shows ads; Nano Trener does not.

### Which is updated more often, Nano Trener or EchoCal?

Nano Trener ships an update every 5 weeks, and EchoCal every 3 weeks. Most recently, Nano Trener was updated on October 9, 2026 and EchoCal on October 11, 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.*