# Text to Speech Reader vs Koto AI Reader

The clearest difference is review sentiment: Text to Speech Reader at 74% against Koto AI Reader's 34%. Text to Speech Reader also leads on device support (3 vs 1). Koto AI Reader's advantage is rating (4.5 vs 4.3) and update cadence (every 2 weeks vs every 3 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Text to Speech Reader sells 8 in-app purchases, starting at $5.99 per 7 days and Koto AI Reader sells 8 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Koto AI Reader holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 240 and 154 respectively. Written reviews complicate that: 74% of Text to Speech Reader's written reviews are positive against 34% of Koto AI Reader's, so the app with the better star average is not the one people write more warmly about.

Text to Speech Reader ships an update every 3 weeks, Koto AI Reader every 2 weeks. The most recent releases landed on October 31, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Text to Speech Reader | Koto AI Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (240 ratings)](https://appshunter.io/ios/app/text-to-speech-reader-readbit/id1545366628/reviews) | **[4.5 (154 ratings)](https://appshunter.io/ios/app/koto-ai-reader-text-to-speech/id6483365052/reviews)** |
| Number of ratings | **240** | 154 |
| Positive reviews | **73.9% of reviews** | 33.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 51 MB | 43 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad, Vision Pro** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Virtual Collaboration Research Inc.](https://appshunter.io/developer/1455753337) | [Elve Tech](https://appshunter.io/developer/1736415745) |

## What reviewers say

### Text to Speech Reader

[App page](https://appshunter.io/ios/app/text-to-speech-reader-readbit/id1545366628)

This app converts text from various sources into natural-sounding audiobooks. It supports numerous file formats, offers advanced AI voices in multiple languages, and includes features like word-by-word highlighting and text summarization to enhance comprehension and save time.

**Highlights:** Convert text to audiobooks with AI voices, Supports PDFs, web articles, and scanned documents, 120+ natural-sounding voices in 27 languages, Word-by-word text highlighting, Summarizes text and extracts keywords, Adjustable speech rate, Personal reading habit tracker

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $5.99 | per 7 days |
| Monthly Premium | $11.99 | per month |
| 6 Months Premium | $59.99 | per 6 months |
| Yearly Premium | $95.99 | per year |
| 50.000 Words | $14.99 | one-time |
| 75.000 Words | $19.99 | one-time |
| 150.000 Words | $19.99 | one-time |
| 150.000 Words | $29.99 | one-time |

**What reviewers like**

- 🎙️ Natural, human-like AI voices
- 👍 Free version with good functionality
- 📚 Excellent for students and dyslexic readers
- 🚀 Fast reading speed and multitasking capability
- 📱 User-friendly interface and easy to use

**What reviewers complain about**

- 🐛 Frequent crashes and freezing
- ⏸️ Random pausing and stopping during playback
- 📄 Poor handling of PDFs and documents with images
- 🔤 Skips words, sentences, and entire paragraphs
- 💰 Expensive subscription model

**Reported bugs**

- App crashes when opening or loading large libraries
- Random data loss and document disappearance
- Text syncing issues causing data to vanish
- OCR misreads words and scrambles sentence order
- App freezes when adding multiple books

**Requested features**

- One-time lifetime purchase option instead of subscription
- Offline download capability for entire books
- Chrome browser extension
- Custom pronunciation settings for character names
- Option to skip footnotes, page numbers, and citations


### Koto AI Reader

[App page](https://appshunter.io/ios/app/koto-ai-reader-text-to-speech/id6483365052)

Transform any text into lifelike, natural-sounding speech instantly. This app converts PDFs, documents, web content, and even photos of text into audio. Optimize your learning, multitask, and make content accessible on the go with high-quality voice generation in over 50 languages.

**Highlights:** AI voice generation, Convert PDFs and documents to audio, Read aloud web content, Photo to audio conversion, Supports over 50 languages, Natural-sounding voices

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $6.99 | per 7 days |
| Full Access | $14.99 | per month |
| Full Access | $14.99 | per month |
| Full Access | $14.99 | per month |
| Full Access | $49.99 | per 3 months |
| Full Access | $59.99 | per year |
| Full Access | $59.99 | per year |
| Full Access | $99.99 | per year |

**What reviewers like**

- ✨ Brilliant app
- 🎶 Amazing music generation
- 🎤 Generates songs and sings
- 👍 Easy to use
- 💡 Revolutionary app

**What reviewers complain about**

- 💸 Too expensive
- ⏳ Insanely long waiting times
- 📉 Usage throttled
- ❌ Not working
- 🚫 No free trial

**Reported bugs**

- App just buffering
- Saved library deleted
- Only 1/3 of voices remain
- Can't generate anything
- Not responding

**Requested features**

- Add option to edit lyrics
- Preserve voice and music when editing
- Option to reuse specific tunes
- Allow choosing a melody
- Accompaniment without voice


## Frequently asked questions

### Is Text to Speech Reader free?

Text to Speech Reader is free to download, with in-app purchases available.

### Is Koto AI Reader free?

Koto AI Reader is free to download, with in-app purchases available.

### Which has better reviews, Text to Speech Reader or Koto AI Reader?

Koto AI Reader is rated higher. Text to Speech Reader averages 4.3 out of 5 from 240 ratings, while Koto AI Reader averages 4.5 from 154 ratings.

### Do Text to Speech Reader or Koto AI Reader have ads?

Neither Text to Speech Reader nor Koto AI Reader shows ads.

### Which is updated more often, Text to Speech Reader or Koto AI Reader?

Text to Speech Reader ships an update every 3 weeks, and Koto AI Reader every 2 weeks. Most recently, Text to Speech Reader was updated on October 31, 2026 and Koto AI Reader on October 22, 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.*