---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "School Practice Lock"
developer_entity: "Contractor Pro Software LLC"
bundle_id: "lockapp"
app_store_id: "6443682566"
category: "Education"
primary_platform: "ios"
primary_monetization: "Paid"
offline_capable: false
market_region: "US"
platforms: "iOS"
app_last_updated: "2022-10-12"
report_date: "2026-08-25"
last_verified: "2026-08-25T00:00:00.000Z"
report_version: "1.0"
total_reviews: 10
overall_rating: 1.9
sentiment: "Upset"
sentiment_score: 10
confidence: "low"
confidence_score: 0.3
top_complaint_theme: "The combination lock interface fails to register subsequent inputs after the first number is entered"
review_sample_size: 1
total_review_count: 1
analyzed_review_count: 1
data_age_days: 81
momentum_velocity: "zombie"
intelligence_version: 3
tags: ["education", "paid", "upset sentiment", "mobile app", "app review", "app analysis", "students", "individuals", "needing"]
canonical_url: "https://marlvel.ai/apps/school-practice-lock"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# School Practice Lock Intelligence Report

## TL;DR {#tldr}

- **Category**: Education · Paid
- **Signal**: Rating 1.9 · Sentiment Upset
- **Recent focus**: The combination lock interface fails to register subsequent inputs after the first number is entered (top complaint)

> **TL;DR:** School Practice Lock is a education app by Contractor Pro Software LLC, rated 1.9/5 by 10 users, with Upset user sentiment (10/100), available on iOS.
>
> **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** School Practice Lock faces Upset user sentiment (1.9/5 from 10 reviews), with users reporting the combination lock interface fails to register subsequent inputs after the first number is entered as the primary concern.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 1.9/5 (10 reviews) |
| **User Mood** | Upset |
| **Category** | Education |
| **Developer** | Contractor Pro Software LLC |
| **Pricing** | Paid |
| **Platforms** | iOS |
| **Confidence** | Low (0.3/1.0) |
| **Data Age** | 81d |

## Metadata & Market Performance
- **Publisher:** Contractor Pro Software LLC
- **Category:** Education
- **Target Audience:** Students or individuals needing to learn the mechanics of physical combination locks.
- **Platforms:** iOS
- **Version Reviewed:** 1.0
- **Report Date:** 2026-08-25
- **Signal Count:** 1 review analyzed
- **Confidence:** Low (0.3/1.0)
- **App Store ID (iOS):** 6443682566
- **Bundle ID:** lockapp
- **Performance Trend:** Mixed
- **Data Window:** Analysis based on signals collected up to 2026-08-25

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** School Practice Lock is an educational utility for iOS that simulates combination lock mechanics via AR and custom code entry.
**Why users hire it:** Students use the app to master physical lock sequences without needing the hardware, removing the friction of repeated trial-and-error on actual lockers.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Differentiator] AR Lock Simulation:** Uses camera overlays to simulate physical lock interaction.
- **[Standard] Custom Combination Setting:** Enables users to input specific sequences for targeted practice.
  * *User Intent:* Users value self-expression and personalized experiences.
- **[Basic] Unlocking Guide:** Provides step-by-step mechanical instructions for lock operation.
  * *User Intent:* Users need clear guidance to understand and adopt the product quickly.
<!-- /section:features -->

<!-- section:market-position -->
## Market Position {#market-position}

School Practice Lock occupies a niche educational space with a $0.99 price point. The 1.9-star rating across 10 reviews indicates the product fails to meet basic user expectations for a paid utility.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Paid
- **Tiers:** One-time purchase at $0.99
- **Price:** iOS: $0.99
- **Analysis:** The $0.99 flat-fee model faces high churn because the app fails to function as advertised.

<!-- section:sentiment -->
## 🔴 User Sentiment (Low Confidence: 1 of 1 review analyzed) {#user-sentiment}
- **Overall Rating:** 1.9/5
- **Platform Split:** iOS 1.9/5 (10 ratings)
- **Overall Sentiment:** Upset

### Top Complaints (Impact Areas)

- **The combination lock interface fails to register subsequent inputs after the first number is entered**

<!-- /section:sentiment -->
<!-- section:swot -->
## SWOT Analysis {#swot}

**Core Strengths:**
- AR-based training mechanism provides a distinct learning path for students

**Growth Levers:**
- Implementing a free, ad-supported tier could capture the casual student audience


<!-- /section:swot -->
## Recent Changes (v2 → v3) {#recent-changes}

The product strategy shifted from a recommendation to sunset the app toward a proposed pivot to an ad-supported model. This change reflects an attempt to address the user rejection of the $0.99 price point for a non-functional utility.

**Overall trend**: Mixed
**Compared at**: 2026-08-25

### High-impact changes
- **[Shifted] Ad-supported model proposal** (pricing)

### Medium-impact changes
- **[Added] Pricing as a core weakness** (swot)
- **[Shifted] Executive summary narrative** (positioning)

<!-- section:momentum -->
## App Momentum (Zombie) {#momentum}

- No updates since October 2022.
- Maintenance-mode status confirmed.

> **Cadence:** 1 total versions · 1 majors in last 6 months · 1412 days since last update

<!-- /section:momentum -->

<!-- section:so-what -->
## The "So What?" (Strategic Takeaway) {#so-what}

School Practice Lock is an education app that is a paid app.
It holds a 1.9/5 rating from 10 reviews.

<!-- speakable-start -->
> **Bottom Line:** The product requires a functional pivot to a free, ad-supported model to address the value-gap driving negative sentiment. Restoring core input registration is the only path to stabilizing the 1.9-star rating and preventing total churn to free alternatives.
<!-- speakable-end -->

**Best for:** Students or individuals needing to learn the mechanics of physical combination locks.

<!-- section:pm-actions -->
### PM Action Plan (Next Best Moves)

- [ ] [INVEST] Rebuild input-registration logic because the interface fails after the first digit → restore core utility
<!-- /section:pm-actions -->

<!-- section:outlook -->
### Outlook: Declining

The educational utility market is consolidating around free, frequently updated tools. School Practice Lock's maintenance-mode status and functional regressions make it an unviable product in its current state, signaling a total loss of market relevance.

- 🔴 The lack of updates since 2022 leaves the app in a broken state, which guarantees continued user churn to free alternatives.
<!-- /section:outlook -->

<!-- /section:so-what -->

<!-- section:metrics -->
## Key Metrics Summary

| Metric | Value |
| :--- | :--- |
| Overall Rating | 1.9/5 |
| Total Reviews | 10 |
| Sentiment | Upset (10/100) |
| Confidence | Low |
| Pricing Model | Paid |
| Platforms | iOS |
| Key Features | 3 analyzed |
| Trend | Mixed |
| Outlook | Declining |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **School Practice Lock** (this app) | 1.9/5 | Upset | Contractor Pro Software LLC |
| [AlgoApp - Flashcards](https://marlvel.ai/apps/algoapp-flashcards) | 4.5/5 | n/a | AlgoApp Inc |
| [Elevate - Brain Training Games](https://marlvel.ai/apps/elevate-brain-training-games) | 4.7/5 | n/a | The Mind Company |
| [Flashcards Deluxe](https://marlvel.ai/apps/flashcards-deluxe) | 4.5/5 | N/A | OrangeOrApple.com |
| [Flash Cards Flashcards Maker](https://marlvel.ai/apps/flash-cards-flashcards-maker) | 4.0/5 | Mixed | Infinite Wave Media, LLC |
| [Flashcards maker - AI generate](https://marlvel.ai/apps/flashcards-maker-ai-generate) | 4.1/5 | Mixed | Teleprompter LLC |

## Company Profile
- **Developer:** Contractor Pro Software LLC

## Data Sources & Links
- **App Store ID:** 6443682566
- **Sources:** App store metadata, User reviews.

## Related Intel Reports
- [*AlgoApp - Flashcards*](https://marlvel.ai/apps/algoapp-flashcards) (AlgoApp Inc) · 4.5/5 Rating
- [*Elevate - Brain Training Games*](https://marlvel.ai/apps/elevate-brain-training-games) (The Mind Company) · 4.7/5 Rating
- [*Flashcards Deluxe*](https://marlvel.ai/apps/flashcards-deluxe) (OrangeOrApple.com) · 4.5/5 Rating
- [*Flash Cards Flashcards Maker*](https://marlvel.ai/apps/flash-cards-flashcards-maker) (Infinite Wave Media, LLC) · 4.0/5 Rating
- [*Flashcards maker - AI generate*](https://marlvel.ai/apps/flashcards-maker-ai-generate) (Teleprompter LLC) · 4.1/5 Rating
- [*Impulse - Brain Training*](https://marlvel.ai/apps/impulse-brain-training) (GMRD Apps Limited) · 4.6/5 Rating
- [*Peak - Brain Training*](https://marlvel.ai/apps/peak-brain-training) (Synaptic Labs) · 4.7/5 Rating
- [*자주 틀리는 우리말*](https://marlvel.ai/apps/app--424) (DaolSoft, Co., Ltd.) · N/A Rating
- [*달공부 - 한 달 공부 다이어리 + 루틴/공부 타이머*](https://marlvel.ai/apps/azlabs-dalstudy) (SuWon Choi) · N/A Rating
- [*타요콘 - 타요 아바타 놀이동화*](https://marlvel.ai/apps/com-kigle-project-tayocon) (KIGLE) · 3.1/5 Rating

## Frequently Asked Questions {#faq}

### Is School Practice Lock worth the $0.99 price?

Based on user reviews, the app currently fails to register inputs correctly, making it difficult to recommend compared to free alternatives.

### Does School Practice Lock work on all locks?

The app provides a simulation for combination locks, but users report the interface stops responding after the first digit is entered.

### What is a free alternative to School Practice Lock?

Reviewers suggest seeking free alternatives on the store, as the paid version of this app is not currently functional.

## Methodology {#methodology}

This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline:

1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps.
2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks.
3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes).
4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category.
5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights.

- **Confidence Score:** 0.3/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 1
- **Data Sources:** user reviews, App Store metadata
- **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform
- **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence.
- **Report Age:** 81 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/school-practice-lock)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.