# BITS Lab vs SLK Curriculum

The clearest difference is review sentiment: BITS Lab at 67% against SLK Curriculum's 0%. BITS Lab also leads on in-app purchases (none vs 10) and iOS requirement (9.0 vs 17.0). SLK Curriculum's advantage is rating (4.6 vs 3.9) and update cadence (weekly vs every 2 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. SLK Curriculum sells 7 in-app purchases, starting at $25.99 per month. BITS Lab asks for nothing beyond the download.

SLK Curriculum holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 16 and 9 respectively. Written reviews complicate that: 67% of BITS Lab's written reviews are positive against 0% of SLK Curriculum's, so the app with the better star average is not the one people write more warmly about.

BITS Lab ships an update every 2 months, SLK Curriculum weekly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | BITS Lab | SLK Curriculum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (16 ratings)](https://appshunter.io/ios/app/bits-lab-start/id1198658004/reviews) | **[4.6 (9 ratings)](https://appshunter.io/ios/app/slk-curriculum/id6468837197/reviews)** |
| Number of ratings | **16** | 9 |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 66 MB | 132 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [Tara McAllister](https://appshunter.io/developer/1198658003) | [Speech and Language Kids](https://appshunter.io/developer/1710629636) |

## What reviewers say

### BITS Lab

[App page](https://appshunter.io/ios/app/bits-lab-start/id1198658004)

This app uses visual biofeedback to help users, particularly children and adolescents, correct speech errors related to the American English 'r' sound. It offers guided practice, adaptive challenges, and progress tracking for effective speech therapy.

**Highlights:** Visual biofeedback for speech correction, Tutorial for biofeedback interpretation, Free play mode for 'r' practice, Adaptive quest mode for increasing difficulty, Quiz mode for progress tracking, Visual rewards for improvement, Clinician dashboard for progress monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### SLK Curriculum

[App page](https://appshunter.io/ios/app/slk-curriculum/id6468837197)

This comprehensive speech and language therapy curriculum helps children make faster progress while reducing planning stress for adults. It offers customizable tools, a year-long mentorship program, and AI-powered material generation for effective communication skill development.

**Highlights:** Assessment tool for skill pinpointing, Customizable curriculum modules, Year-long mentorship program, Core Language Program (K-5), AI-powered material generators, Private discussion board & support group

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $25.99 | per month |
| Monthly Plan | $25.99 | per month |
| Monthly Plan | $49.99 | per month |
| Annual Plan | $259.99 | per year |
| Annual Plan | $259.99 | per year |
| Annual Plan | $499.99 | per year |
| One Time Purchase Plan | $499.99 | one-time |


## Frequently asked questions

### Is BITS Lab free?

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

### Is SLK Curriculum free?

SLK Curriculum is free to download, with in-app purchases available.

### Which has better reviews, BITS Lab or SLK Curriculum?

SLK Curriculum is rated higher. BITS Lab averages 3.9 out of 5 from 16 ratings, while SLK Curriculum averages 4.6 from 9 ratings.

### Do BITS Lab or SLK Curriculum have ads?

Neither BITS Lab nor SLK Curriculum shows ads.

### Which is updated more often, BITS Lab or SLK Curriculum?

BITS Lab ships an update every 2 months, and SLK Curriculum weekly. Most recently, BITS Lab was updated on November 2, 2026 and SLK Curriculum on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*