# Build CLS vs Mindstone

The clearest difference is in-app purchases: Build CLS at none against Mindstone's 1. Build CLS also leads on iOS requirement (13.0 vs 16.0). Mindstone's advantage is update cadence (every 8 days vs every 19 months). On price, ads and device support there is nothing between them.

Both are free to download. Mindstone sells 1 one-off in-app purchase. Build CLS asks for nothing beyond the download.

Build CLS ships an update every 19 months, Mindstone every 8 days. The most recent releases landed on September 13, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Build CLS | Mindstone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (7 ratings)](https://appshunter.io/ios/app/mindstone/id1550729105/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 54.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 8 days** |
| Monetization | — | Freemium |
| Size | 17 MB | 174 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Clinical Leadership Solutions LTD](https://appshunter.io/developer/1434082548) | [Mindstone Learning limited](https://appshunter.io/developer/1550729227) |

## What reviewers say

### Build CLS

[App page](https://appshunter.io/ios/app/build-cls/id1439136458)

**In-app purchases:** none


### Mindstone

[App page](https://appshunter.io/ios/app/mindstone/id1550729105)

Learn and master in-demand AI skills for your career and business. Access curated content, join a community of experts, and track your progress with AI-powered insights. Upgrade for personalized coaching and skill certifications.

**Highlights:** Curated AI content library, Community-driven learning, Progress tracking and skill profiles, AI-powered coaching (Pro/Enterprise), Personalized adaptive learning (Pro/Enterprise), Renewable skill badges

**Features:** Apple Wallet

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Competency (self-serve) | $39.99 | one-time |


## Frequently asked questions

### Is Build CLS free?

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

### Is Mindstone free?

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

### Do Build CLS or Mindstone have ads?

Neither Build CLS nor Mindstone shows ads.

### Which is updated more often, Build CLS or Mindstone?

Build CLS ships an update every 19 months, and Mindstone every 8 days. Most recently, Build CLS was updated on September 13, 2026 and Mindstone on June 1, 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.*