SLII® vs AST
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SLII®
This reference tool helps leaders and team members apply the SLII Model to improve relationships and performance. It provides guidance for critical leadership moments, offering diagnostic tools and actionable tips.
- Diagnosis wizard for development levels
- Actionable tips for SLII principles
- Interactive SLII Model visualization
- On-demand expanded information
- Guidance for leadership conversations
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The SLII App is for people and their team members who have received an app activation code as part of participating in one of Blanchard’s programs that uses the SLII Model. A quick go-to reference tool, this app will help leaders and team members improve relationships and performance by applying SLII to the real world. It helps at critical leadership moments—when preparing for a conversation with a team member or when asking for what you need from your leader to help you succeed. The app features: • A diagnosis wizard to diagnose an individual’s development level on important goals or tasks • Tips on what to do and what to say to help implement the principles of SLII • An interactive SLII Model shows the key characteristics of each development level and matching leadership style • Expanded information available on-demand throughout the app
AST
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AST-ARC is your gate for ARC FURNACE Digital Monitoring Graphite Electrodes Performance Monitoring Feature available in this version: I- Graphite Electrodes Performance Monitoring I.a- Instantaneous Graphite Electrodes Column Oxidation Assessment * Update with other useful features will be introduce regularly. ** We are currently working on other features to enable an instantaneous Graphite Electrode Performance Assessment.
Screenshots
Verdict
The clearest difference is price: SLII® at Free against AST's $289.00. SLII® also leads on update cadence (every 3 weeks vs every 4 months) and iOS requirement (12.4 vs 15.1). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
SLII® is free to download; AST costs $289.00 up front. Neither carries in-app purchases, so what you see is what you pay.
SLII® ships an update every 3 weeks, AST every 4 months. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.
| Parameter | SLII® | AST |
|---|---|---|
| Price | Free — better | $289.00 |
| Rating | 3.3 (28 ratings) — better | — |
| Positive reviews | 58.3% of reviews | — |
| Number of ratings | 28 — better | — |
| Update frequency | Every 3 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.4 — better | 15.1 |
| Further details — not scored | ||
| Size | 47 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | The Ken Blanchard Companies | AST Technology SA |
In-app purchases
SLII®
No in-app purchases
AST
No in-app purchases








