# VoMo2 vs One Kanji Clock

The clearest difference is in-app purchases: VoMo2 at none against One Kanji Clock's 1. VoMo2 also leads on ads (none vs shown). One Kanji Clock's advantage is update cadence (every 2 months vs every 29 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. One Kanji Clock sells 1 one-off in-app purchase. VoMo2 asks for nothing beyond the download.

VoMo2 ships an update every 29 months, One Kanji Clock every 2 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | VoMo2 | One Kanji Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/vomo2/id1267957331/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 29 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 8 MB | 18 MB |
| Requires iOS | 12.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hollins Communications Research Institute](https://appshunter.io/developer/1266723162) | [Mihoko Araki](https://appshunter.io/developer/1476136915) |

## What reviewers say

### VoMo2

[App page](https://appshunter.io/ios/app/vomo2/id1267957331)

This utility app monitors and displays target amplitude measures. It provides a straightforward way to gather and visualize vocal intensity data.

**Highlights:** Monitors target amplitudes, Displays amplitude measures, Gathers vocal intensity data, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


### One Kanji Clock

[App page](https://appshunter.io/ios/app/one-kanji-clock/id6468893847)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Kanji Clock with no ads | $2.99 | one-time |


## Frequently asked questions

### Is VoMo2 free?

VoMo2 is free to download, with no in-app purchases.

### Is One Kanji Clock free?

One Kanji Clock is free to download, with in-app purchases available.

### Do VoMo2 or One Kanji Clock have ads?

One Kanji Clock shows ads; VoMo2 does not.

### Which is updated more often, VoMo2 or One Kanji Clock?

VoMo2 ships an update every 29 months, and One Kanji Clock every 2 months. Most recently, VoMo2 was updated on October 29, 2026 and One Kanji Clock 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.*