# トゥドリ vs ambient

The clearest difference is in-app purchases: トゥドリ at none against ambient's 2. トゥドリ also leads on update cadence (every 2 days vs fortnightly). ambient's advantage is device support (6 vs 3). On price, ads and iOS requirement there is nothing between them.

Both are free to download. ambient sells 2 in-app purchases, starting at $0.49 per month. トゥドリ asks for nothing beyond the download.

トゥドリ ships an update every 2 days, ambient fortnightly. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | トゥドリ | ambient |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Fortnightly |
| Size | 31 MB | 14 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [SeungHyun Lim](https://appshunter.io/developer/6776193099) | [zoome LLC](https://appshunter.io/developer/1541241247) |

## What reviewers say

### トゥドリ

[App page](https://appshunter.io/ios/app/id6776193097)

**In-app purchases:** none


### ambient

[App page](https://appshunter.io/ios/app/ambient-evolving-soundscapes/id6801584193)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ambient Premium Monthly | $0.49 | per month |
| ambient Premium Lifetime | $6.99 | one-time |


## Frequently asked questions

### Is トゥドリ free?

トゥドリ is free to download, with no in-app purchases.

### Is ambient free?

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

### Do トゥドリ or ambient have ads?

Neither トゥドリ nor ambient shows ads.

### Which is updated more often, トゥドリ or ambient?

トゥドリ ships an update every 2 days, and ambient fortnightly. Most recently, トゥドリ was updated on October 31, 2026 and ambient on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*