# Lachic vs MuudWave

The clearest difference is update cadence: MuudWave at every 2 days against Lachic's every 33 months. Lachic's advantage is iOS requirement (13.0 vs 17.5). 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.

Lachic ships an update every 33 months, MuudWave every 2 days. The most recent releases landed on September 17, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Lachic | MuudWave |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 3 MB | 3 MB |
| Requires iOS | **13.0** | 17.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Naoya Takahashi](https://appshunter.io/developer/1301211980) | [Masao Narumi](https://appshunter.io/developer/1759494772) |

## What reviewers say

### Lachic

[App page](https://appshunter.io/ios/app/lachic/id1634154536)

**In-app purchases:** none


### MuudWave

[App page](https://appshunter.io/ios/app/muudwave/id6740519998)

This app helps you understand your emotional patterns by tracking daily mood changes and visualizing their progression. It records relative mood shifts compared to the previous day, addressing limitations of absolute mood scales.

**Highlights:** Daily mood logging, Relative mood tracking, Emotional progression visualization, Understanding emotional shifts, Free to use

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

**In-app purchases:** none


## Frequently asked questions

### Is Lachic free?

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

### Is MuudWave free?

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

### Do Lachic or MuudWave have ads?

Neither Lachic nor MuudWave shows ads.

### Which is updated more often, Lachic or MuudWave?

Lachic ships an update every 33 months, and MuudWave every 2 days. Most recently, Lachic was updated on September 17, 2026 and MuudWave on September 22, 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.*