Comparison

SOLID Architecture vs Screen Time Control

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

SOLID Architecture

Features
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Learning SOLID is an educational app focused on software architecture and development best practices. The goal of the app is to teach SOLID principles in a clear, practical, and applicable way for everyday development. The content is organized into modules, with one module dedicated to each SOLID principle. Each module combines theoretical explanations, real world examples inspired by professional scenarios, and practical exercises to reinforce learning. The app was designed for those who want to understand not only the concept, but also how to apply SOLID in real projects. The examples show tightly coupled code, common maintenance problems, and how to refactor into cleaner and more scalable solutions. In the practical section, users interact with a simple and intuitive interface, allowing them to practice concepts without needing to type code. This enables full focus on architectural thinking and understanding the responsibilities of each class or component. Main features of the app: Clear and objective explanation of all SOLID principles A complete module for each letter of SOLID Real world examples based on market problems Practical and interactive exercises Comparison between incorrect code and refactored code Content focused on architecture and best practices Simple interface for distraction free learning Learning SOLID is recommended for students, beginner developers, and professionals who want to strengthen architectural concepts, write cleaner code, and build systems that are easier to maintain and evolve.

About

Screen Time Control

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Guardian Reader turns screen time into something your child earns by reading real books out loud. You choose which apps get locked. To unlock them, your child photographs a page of any printed book, reads it aloud, and the app checks that they really read it, word by word, right on the iPhone. No account. No servers. Nothing tracked. HOW IT WORKS 1. Scan the pages. One photo per page, with a framing guide so only what you point at counts. 2. Read them out loud, straight through. The app listens and matches what it hears against the pages, live, so your child watches the percentage climb as they read. 3. Screen time unlocks. Pass the reading and the apps open for the minutes they earned. When the time runs out, they lock again by themselves. IT CATCHES THE SHORTCUTS KIDS ACTUALLY TAKE This is the part other reward apps skip. Guardian Reader does not take your child's word for it, and it does not ask a quiz that can be guessed. โ€ข Reading honestly lands far above the pass mark. Improvising, mumbling or playing a video lands near zero. โ€ข Stumbles, repeats and small mistakes still pass. It checks that they read, not that they were perfect. โ€ข A page already scanned in the same session cannot be scanned again. โ€ข You move the pass mark yourself, so a five-year-old and a teenager are both treated fairly. BUILT FOR A HABIT, NOT A PUNISHMENT โ€ข Streaks and medals, from the first day to a full year โ€ข Progress by day, month and year โ€ข Every session saved with what was actually read โ€ข A four-week reading plan built from your child's age and daily screen time FOR PARENTS โ€ข Lock any app or an entire category using Apple's Screen Time โ€ข Set the pages per session and the minutes earned โ€ข Settings sit behind a parent PIN, deliberately separate from Face ID: the face enrolled on that iPhone belongs to your child โ€ข Export a PDF reading report to hand to a teacher (Premium) PRIVATE BY DESIGN Reading is verified on the device. Your child's voice is never recorded, uploaded or shared, and photos of book pages never leave the iPhone. There is no account to create, no server of ours, and nothing is tracked, sold or shared. FREE AND PREMIUM Free: verified reading aloud, screen time rewards, streaks, medals and the last 30 days of progress history, with one blocked app. Premium: unlimited blocked apps and categories, your full progress history, plus PDF reading reports. Available as a monthly subscription, as a yearly subscription with a 3-day free trial, or as a one-time lifetime purchase. Requires an iPhone with iOS 18 or later. Available in English, Spanish, Portuguese, French, German, Italian, Japanese, Korean and Chinese. Subscriptions Guardian Reader Premium is available as a monthly or a yearly auto-renewable subscription, or as a one-time lifetime purchase. The yearly plan includes a 3-day free trial; the monthly plan does not. Prices are shown inside the app before you buy. Payment is charged to your Apple Account on confirmation. A subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. You can manage or cancel it at any time in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://dezeo.lat/guardianreader/privacypolicy/

Screenshots

SOLID Architecture4 screens
Screen Time Control4 screens

Verdict

The call

The clearest difference is iOS requirement: SOLID Architecture at 13.0 against Screen Time Control's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. SOLID Architecture sells 3 one-off in-app purchases and Screen Time Control sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SOLID Architecture ships an update every 9 days, Screen Time Control fortnightly. The most recent releases landed on September 28, 2026 and September 13, 2026 respectively.

Scorecard1 real difference ยท 5 level
SOLID Architecture versus Screen Time Control: the parameters behind the verdict, then further details
ParameterSOLID ArchitectureScreen Time Control
PriceFreeFree
Update frequencyEvery 9 days โ€” betterFortnightly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPod โ€” betteriPhone
Requires iOS13.0 โ€” better18.0
Further details โ€” not scored
Size94 MB55 MB
Age rating4+4+
DeveloperAirton Siqueira de FreitasNicolas Gula

In-app purchases

3 purchases

SOLID Architecture

One-time3
  • CERTIFICATE OF COMPLETION$2.99
  • Premium access$4.99
  • FULL PASS ALL APPS$17.99
3 purchases

Screen Time Control

Subscriptions2
  • Premium Monthly$6.991 Month
  • Premium Yearly7 Days trial$19.991 Year
One-time1
  • Premium Lifetime$69.99

Questions

Is SOLID Architecture free?
SOLID Architecture is free to download, with in-app purchases available.
Is Screen Time Control free?
Screen Time Control is free to download, with in-app purchases available.
Do SOLID Architecture or Screen Time Control have ads?
Neither SOLID Architecture nor Screen Time Control shows ads.
Which is updated more often, SOLID Architecture or Screen Time Control?
SOLID Architecture ships an update every 9 days, and Screen Time Control fortnightly. Most recently, SOLID Architecture was updated on September 28, 2026 and Screen Time Control on September 13, 2026.

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