# Deep Decibels vs Tomoshibi

The clearest difference is iOS requirement: Tomoshibi at 15.0 against Deep Decibels's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Deep Decibels sells 2 in-app purchases, starting at $2.99 per month and Tomoshibi sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Deep Decibels ships an update every 2 weeks, Tomoshibi fortnightly. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Deep Decibels | Tomoshibi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Fortnightly** |
| Size | 109 MB | 81 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Alejandro Cerrillo Gutierrez](https://appshunter.io/developer/1826410785) | [Daishi Sugawara](https://appshunter.io/developer/6783803841) |

## What reviewers say

### Deep Decibels

[App page](https://appshunter.io/ios/app/deep-decibels/id6748611031)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $2.99 | per month |
| Premium Access | $19.99 | per year |


### Tomoshibi

[App page](https://appshunter.io/ios/app/tomoshibi-deep-focus-timer/id6788594457)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $2.99 | per month |
| Annual Plan | $24.99 | per year |


## Frequently asked questions

### Is Deep Decibels free?

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

### Is Tomoshibi free?

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

### Do Deep Decibels or Tomoshibi have ads?

Neither Deep Decibels nor Tomoshibi shows ads.

### Which is updated more often, Deep Decibels or Tomoshibi?

Deep Decibels ships an update every 2 weeks, and Tomoshibi fortnightly. Most recently, Deep Decibels was updated on October 9, 2026 and Tomoshibi on October 3, 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.*