# IDDSI vs Advanced Reading Therapy

The clearest difference is review sentiment: Advanced Reading Therapy at 100% against IDDSI's 0%. Advanced Reading Therapy also leads on rating (4.8 vs 1.6) and update cadence (every 4 months vs every 21 months). IDDSI's advantage is price (Free vs $29.99). On ads, in-app purchases and device support there is nothing between them.

IDDSI is free to download; Advanced Reading Therapy costs $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Advanced Reading Therapy holds the better App Store score, 4.8 against 1.6. Both are backed by a comparable volume of ratings — 14 and 64 respectively. Written reviews point the same way: 0% of IDDSI's written reviews are positive against 100% of Advanced Reading Therapy's.

IDDSI ships an update every 21 months, Advanced Reading Therapy every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | IDDSI | Advanced Reading Therapy |
| --- | --- | --- |
| Price | **Free** | $29.99 |
| Rating | [1.6 (14 ratings)](https://appshunter.io/ios/app/iddsi/id1145593063/reviews) | **[4.8 (64 ratings)](https://appshunter.io/ios/app/advanced-reading-therapy/id1245783029/reviews)** |
| Number of ratings | 14 | **64** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 4 months** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#197** |
| Size | 100 MB | 10 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [International Dysphagia Diet Standardisation Initiative Iddsi](https://appshunter.io/developer/1650465352) | [Tactus Therapy Solutions Ltd.](https://appshunter.io/developer/438070002) |

## What reviewers say

### IDDSI

[App page](https://appshunter.io/ios/app/iddsi/id1145593063)

Access the IDDSI framework for food texture and drink thickness testing. This tool provides easy lookup of descriptors and tests, suitable for all ages and care settings to assist individuals with dysphagia.

**Highlights:** IDDSI framework access, Food texture descriptors, Drink thickness tests, Easy lookup, Applicable to all ages, Supports all care settings

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

**In-app purchases:** none


### Advanced Reading Therapy

[App page](https://appshunter.io/ios/app/advanced-reading-therapy/id1245783029)

**Currently charting:** #197 Top Paid · Medical (US App Store)

This app helps adults improve reading comprehension after a stroke or brain injury. It offers engaging exercises with text and audio support, comprehension questions, and progress tracking across three graded levels. Designed for adult learners and speech-language pathologists.

**Highlights:** Paragraph-level reading exercises, Text and audio support, Comprehension questions, Self-rating for metacognition, Progress score reports, Adjustable font and spacing, Audio recording for self-practice

**In-app purchases:** none


## Frequently asked questions

### Is IDDSI free?

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

### Is Advanced Reading Therapy free?

Advanced Reading Therapy costs $29.99, with no in-app purchases.

### Which has better reviews, IDDSI or Advanced Reading Therapy?

Advanced Reading Therapy is rated higher. IDDSI averages 1.6 out of 5 from 14 ratings, while Advanced Reading Therapy averages 4.8 from 64 ratings.

### Do IDDSI or Advanced Reading Therapy have ads?

Neither IDDSI nor Advanced Reading Therapy shows ads.

### Which is updated more often, IDDSI or Advanced Reading Therapy?

IDDSI ships an update every 21 months, and Advanced Reading Therapy every 4 months. Most recently, IDDSI was updated on November 2, 2026 and Advanced Reading Therapy on November 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.*