# 逆処理？ vs ボイボTTS

The clearest difference is in-app purchases: 逆処理？ at none against ボイボTTS's 1. 逆処理？ also leads on ads (none vs shown) and update cadence (every 4 days vs every 3 weeks). ボイボTTS's advantage is review sentiment (33% vs 0%). On price and device support there is nothing between them.

Both are free to download. ボイボTTS sells 1 in-app purchase, starting at $2.99 per month. 逆処理？ asks for nothing beyond the download.

逆処理？ ships an update every 4 days, ボイボTTS every 3 weeks. The most recent releases landed on October 15, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 逆処理？ | ボイボTTS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tts/id6503872597/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 213 MB | 120 MB |
| Requires iOS | **13.2** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Daisuke Majima](https://appshunter.io/developer/1350309854) | [Kazuhiro.Yamada](https://appshunter.io/developer/412842594) |

## What reviewers say

### 逆処理？

[App page](https://appshunter.io/ios/app/id1502801835)

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

**In-app purchases:** none


### ボイボTTS

[App page](https://appshunter.io/ios/app/tts/id6503872597)

This app uses on-device voice synthesis to read text aloud with a wide selection of voices. Save and share generated audio files, and set alarms to have text read at specific times. It also includes a song feature with a MIDI editor.

**Highlights:** On-device voice synthesis, 127 voice options, Save and share audio, Alarm functionality, Song feature with MIDI editor

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| premium (monthly) | $2.99 | per month |


## Frequently asked questions

### Is 逆処理？ free?

逆処理？ is free to download, with no in-app purchases.

### Is ボイボTTS free?

ボイボTTS is free to download, with in-app purchases available.

### Do 逆処理？ or ボイボTTS have ads?

ボイボTTS shows ads; 逆処理？ does not.

### Which is updated more often, 逆処理？ or ボイボTTS?

逆処理？ ships an update every 4 days, and ボイボTTS every 3 weeks. Most recently, 逆処理？ was updated on October 15, 2026 and ボイボTTS on September 10, 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.*