TTLok Pro vs Maintain
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
TTLok Pro
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TTLock Pro redefines your security and convenience. These revolutionary smart lock apps provide you with external control and management capabilities. Through a simple and elegant interface, TTLock Pro is not only a key to open the safe door, but also a comprehensive smart lock management center. No matter where you are, you can easily send digital keys, set unique passwords, and manage fingerprint recognition and IC card access permissions. In addition, TTLock Pro can also record the detailed information of each unlocking and provide real-time proactive unlocking reminders on your device to ensure that you have control over the security of your home or office. Choose TTLock Pro to open a new chapter in smart life.
Maintain
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Maintain makes it easy to keep your important assets organised, cared for and ready when you need them. From vehicles and electronics to appliances, tools and outdoor equipment, Maintain works around what you own. Choose a built-in asset type or create your own custom asset and category for virtually anything you want to track. KEEP EVERYTHING ORGANISED Create detailed records for your assets, including: β’ Photographs and custom icons β’ Make, model and serial number β’ Purchase price and supplier β’ Specifications and notes β’ Documents and receipts β’ Warranty information β’ Odometer or operating-hour readings STAY AHEAD OF MAINTENANCE Create maintenance schedules based on dates, odometer readings or operating hours. Maintainβs simple traffic-light system shows you what is: β’ Good β’ Due Soon β’ In need of Attention Enable reminders, add scheduled maintenance to your Apple Calendar and record completed work in each assetβs service history. YOUR ASSETS AT A GLANCE The Home screen provides a practical overview of your entire collection, including maintenance status, total recorded value, service history and upcoming tasks. Maintain Pro also includes Home Screen and desktop widgets, so you can check your Good, Due Soon and Attention totals without opening the app. MADE FOR YOUR APPLE DEVICES Use Maintain on iPhone, iPad and Mac. With iCloud enabled, your information stays available across your supported Apple devices signed in to the same Apple Account. DESIGNED FOR REAL LIFE Maintain uses a clean, familiar Apple-native interface that supports light and dark mode. Your records remain easy to browse, update and understand whether you are at home, in the workshop or on the move. MAINTAIN FREE Download Maintain free and manage up to three assets with no subscription. MAINTAIN PRO LIFETIME Upgrade once to unlock: β’ Unlimited assets β’ Maintain Home Screen and desktop widgets β’ A single lifetime purchase β’ No subscription or recurring charge Maintain helps you protect what you own, avoid forgotten maintenance and build a useful long-term record for every important asset.
Screenshots
Verdict
The clearest difference is in-app purchases: TTLok Pro at none against Maintain's 1. TTLok Pro also leads on iOS requirement (15.0 vs 17.0). Maintain's advantage is ads (none vs shown) and update cadence (daily vs every 3 weeks). On price and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Maintain sells 1 one-off in-app purchase. TTLok Pro asks for nothing beyond the download.
TTLok Pro ships an update every 3 weeks, Maintain daily. The most recent releases landed on November 14, 2026 and November 13, 2026 respectively.
| Parameter | TTLok Pro | Maintain |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Daily β better |
| Ads | Yes | No β better |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, Mac β better |
| Requires iOS | 15.0 β better | 17.0 |
| Further details β not scored | ||
| Size | 118 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | ζ·±ε³εΈζ―ε―η§ζζιε ¬εΈ | Ezar Ahrend |
In-app purchases
TTLok Pro
No in-app purchases
Maintain
- Maintain Pro Lifetime$14.99









