# Mastering emotion vs KEEPER

The clearest difference is price: Mastering emotion at Free against KEEPER's $0.99. KEEPER's advantage is in-app purchases (none vs 1) and update cadence (every 4 days vs every 10 days). On ads, device support and iOS requirement there is nothing between them.

Mastering emotion is free to download; KEEPER costs $0.99 up front. Mastering emotion sells 1 one-off in-app purchase. KEEPER asks for nothing beyond the download.

Mastering emotion ships an update every 10 days, KEEPER every 4 days. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Mastering emotion | KEEPER |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Size | 150 MB | 14 MB |
| Requires iOS | 15.0 | **14.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Man Hung Sun](https://appshunter.io/developer/1471605573) | [hideo nakamura](https://appshunter.io/developer/1242808811) |

## What reviewers say

### Mastering emotion

[App page](https://appshunter.io/ios/app/mastering-emotion/id6444737448)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $0.99 | one-time |


### KEEPER

[App page](https://appshunter.io/ios/app/keeper-time-management-tool/id6502432858)

**In-app purchases:** none


## Frequently asked questions

### Is Mastering emotion free?

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

### Is KEEPER free?

KEEPER costs $0.99, with no in-app purchases.

### Do Mastering emotion or KEEPER have ads?

Neither Mastering emotion nor KEEPER shows ads.

### Which is updated more often, Mastering emotion or KEEPER?

Mastering emotion ships an update every 10 days, and KEEPER every 4 days. Most recently, Mastering emotion was updated on October 11, 2026 and KEEPER on October 6, 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.*