# Inverter control vs Voice Aloud Reader TTS reader

The clearest difference is in-app purchases: Inverter control at none against Voice Aloud Reader TTS reader's 3. Inverter control also leads on ads (none vs shown) and iOS requirement (8.0 vs 16.0). Voice Aloud Reader TTS reader's advantage is update cadence (every 3 months vs every 19 months). On price and device support there is nothing between them.

Both are free to download. Voice Aloud Reader TTS reader sells 3 in-app purchases, starting at $9.99 per month. Inverter control asks for nothing beyond the download.

Inverter control ships an update every 19 months, Voice Aloud Reader TTS reader every 3 months. The most recent releases landed on October 7, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Inverter control | Voice Aloud Reader TTS reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (111 ratings)](https://appshunter.io/ios/app/voice-aloud-reader-tts-reader/id1617438798/reviews)** |
| Number of ratings | — | **111** |
| Positive reviews | — | 31.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 33 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [文 周](https://appshunter.io/developer/1071506295) | [汇杭 钟](https://appshunter.io/developer/1481585840) |

## What reviewers say

### Inverter control

[App page](https://appshunter.io/ios/app/inverter-control/id1519140633)

**In-app purchases:** none


### Voice Aloud Reader TTS reader

[App page](https://appshunter.io/ios/app/voice-aloud-reader-tts-reader/id1617438798)

Convert text to speech in 31 languages with customizable voices, speed, and pitch. Scan text from photos or import from various sources. Export audio, bookmark, and highlight spoken text for an enhanced reading experience.

**Highlights:** Text to speech conversion, 31 language support, Customizable voice, speed, and pitch, OCR for text scanning, MP3 audio export, Bookmark and highlighting features, Import from weblinks and iCloud

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium for 1 month | $9.99 | per month |
| Premium for 12 months | $39.99 | per year |
| Premium Version | $79.99 | one-time |


## Frequently asked questions

### Is Inverter control free?

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

### Is Voice Aloud Reader TTS reader free?

Voice Aloud Reader TTS reader is free to download, with in-app purchases available.

### Do Inverter control or Voice Aloud Reader TTS reader have ads?

Voice Aloud Reader TTS reader shows ads; Inverter control does not.

### Which is updated more often, Inverter control or Voice Aloud Reader TTS reader?

Inverter control ships an update every 19 months, and Voice Aloud Reader TTS reader every 3 months. Most recently, Inverter control was updated on October 7, 2026 and Voice Aloud Reader TTS reader on October 23, 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.*