# mellowD vs TempoScope

The clearest difference is in-app purchases: mellowD at none against TempoScope's 1. mellowD also leads on iOS requirement (15.6 vs 18.0). TempoScope's advantage is update cadence (weekly vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. TempoScope sells 1 one-off in-app purchase. mellowD asks for nothing beyond the download.

mellowD ships an update every 6 weeks, TempoScope weekly. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | mellowD | TempoScope |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 52 MB | 15 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Kai Lehmann](https://appshunter.io/developer/1868686280) | [HYO SEOP LEE](https://appshunter.io/developer/6790621758) |

## What reviewers say

### mellowD

[App page](https://appshunter.io/ios/app/mellowd-intonation-trainer/id6757753981)

**In-app purchases:** none


### TempoScope

[App page](https://appshunter.io/ios/app/temposcope/id6808620681)

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TempoScope Pro | $2.99 | one-time |


## Frequently asked questions

### Is mellowD free?

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

### Is TempoScope free?

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

### Do mellowD or TempoScope have ads?

Neither mellowD nor TempoScope shows ads.

### Which is updated more often, mellowD or TempoScope?

mellowD ships an update every 6 weeks, and TempoScope weekly. Most recently, mellowD was updated on October 25, 2026 and TempoScope on October 30, 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.*