Theta vs Dircode lock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Theta
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Theta-Meter X Theta-Meter X is a companion application designed to work with compatible Theta-Meter hardware devices. The app connects via Bluetooth Low Energy (BLE 4.0 or higher) or Wi-Fi and displays real-time electrical resistance measurements from objects connected to the device’s electrodes. Key Features: - Real-time visualization of electrical resistance changes - Clear analog-style needle indicator for dynamic monitoring - Bluetooth LE and Wi-Fi connectivity - Simple, user-friendly interface - Stable data transmission from supported hardware devices How It Works When connected to a compatible device, the app measures and displays variations in electrical resistance detected between attached electrodes. The needle indicator provides a continuous visual representation of resistance fluctuations, allowing users to observe dynamic changes over time. Intended Use Theta-Meter X is designed for general experimental, educational, and technical purposes involving electrical resistance measurement. It is intended for use with compatible hardware devices only. Important Notice This application and the associated hardware are not medical devices. They are not intended for diagnosing, treating, curing, preventing, or mitigating any disease or health condition. The app does not provide medical, therapeutic, or psychological advice.
Dircode lock
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Dircode is an app for managing smart locks and access devices. The app lets you connect compatible locks, manage access rights, and view transaction history. Key features: - Connect and manage compatible locks via Bluetooth; - View a list of locks and Wi-Fi gateways; - Manage user access rights; - Work with codes, cards, and fingerprints, if supported by the device; - View event logs and transaction history; - Sync records and perform basic device setup. The availability of individual features depends on the lock model, gateway, and supported device capabilities.
Screenshots
Verdict
The clearest difference is update cadence: Dircode lock at every 6 weeks against Theta's every 3 months. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Theta ships an update every 3 months, Dircode lock every 6 weeks. The most recent releases landed on May 13, 2026 and September 8, 2026 respectively.
| Parameter | Theta | Dircode lock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17 | 16.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 38 MB |
| Age rating | 12+ | 4+ |
| Developer | Mikhail Fedorov | Anton Poletaev |
In-app purchases
Theta
No in-app purchases
Dircode lock
No in-app purchases








