# Spaced Retrieval Therapy vs Fluency Calculator

The clearest difference is rating: Spaced Retrieval Therapy at 4.7 against Fluency Calculator's 3.0. Spaced Retrieval Therapy also leads on ratings volume (32 vs 2) and iOS requirement (9.0 vs 16.0). Fluency Calculator's advantage is review sentiment (100% vs 65%) and price ($5.99 vs $9.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Spaced Retrieval Therapy costs $9.99 and Fluency Calculator $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Spaced Retrieval Therapy holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Spaced Retrieval Therapy has 32 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 65% of Spaced Retrieval Therapy's written reviews are positive against 100% of Fluency Calculator's, so the app with the better star average is not the one people write more warmly about.

Spaced Retrieval Therapy ships an update every 18 months, Fluency Calculator every 6 months. The most recent releases landed on October 21, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Spaced Retrieval Therapy | Fluency Calculator |
| --- | --- | --- |
| Price | $9.99 | **$5.99** |
| Rating | **[4.7 (32 ratings)](https://appshunter.io/ios/app/spaced-retrieval-therapy/id498787795/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/fluency-calculator/id914433692/reviews) |
| Number of ratings | **32** | 2 |
| Positive reviews | 64.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 6 months** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#199** |
| Size | 5 MB | 3 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Tactus Therapy Solutions Ltd.](https://appshunter.io/developer/438070002) | [JOY VENTURES PTY LTD](https://appshunter.io/developer/914433695) |

## What reviewers say

### Spaced Retrieval Therapy

[App page](https://appshunter.io/ios/app/spaced-retrieval-therapy/id498787795)

This app uses a scientifically proven method to help individuals with memory impairments, such as dementia, recall important information. It acts as an interval timer, automatically adjusting prompt timing based on user responses to reinforce memory over time.

**Highlights:** Spaced retrieval training method, Automatic interval adjustment, Data tracking and reporting, Background operation, Subtle sound and visual prompts, Email finished reports

**In-app purchases:** none


### Fluency Calculator

[App page](https://appshunter.io/ios/app/fluency-calculator/id914433692)

**Currently charting:** #199 Top Paid · Medical (US App Store)

This tool accurately measures speech fluency by calculating syllables per minute and percentage of syllables stuttered. It offers visual and vibratory feedback for precise tallying, aiding speech pathologists and individuals who stutter.

**Highlights:** Syllables per minute calculation, Percentage syllables stuttered calculation, Visual and vibratory feedback, Apple Watch app, Dark Mode, History and editing, Export functionality

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Spaced Retrieval Therapy free?

Spaced Retrieval Therapy costs $9.99, with no in-app purchases.

### Is Fluency Calculator free?

Fluency Calculator costs $5.99, with no in-app purchases.

### Which has better reviews, Spaced Retrieval Therapy or Fluency Calculator?

Spaced Retrieval Therapy is rated higher. Spaced Retrieval Therapy averages 4.7 out of 5 from 32 ratings, while Fluency Calculator averages 3.0 from 2 ratings.

### Do Spaced Retrieval Therapy or Fluency Calculator have ads?

Neither Spaced Retrieval Therapy nor Fluency Calculator shows ads.

### Which is updated more often, Spaced Retrieval Therapy or Fluency Calculator?

Spaced Retrieval Therapy ships an update every 18 months, and Fluency Calculator every 6 months. Most recently, Spaced Retrieval Therapy was updated on October 21, 2026 and Fluency Calculator on October 6, 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.*