INFINIT SMART KEY vs Run Custom JS on Background
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
INFINIT SMART KEY
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The mobile application interacts with a custom board that can accommodate any physical key, such as a car key or shutter key. This board transforms the physical key into a smart key, providing digital functionality. Once connected to the app, users can manage their smart keys through their mobile phones, allowing them to lock or unlock the car, control the shutters, and define remote access permissions. This system enhances security by eliminating the need for traditional keys and offering real-time control—all within an easy-to-use app interface. Whether at home, in the car, or on the go, the app delivers a seamless experience for users to control and monitor access effortlessly.
Run Custom JS on Background
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・Runs custom JavaScript code continuously in Safari ・Supports a wide range of functions, including automatic bookmarklet execution, ad blocking, and automation. ・Easily paste code using the Paste button ・Supports import and export. You can instantly transfer your settings to other devices.
Screenshots
Verdict
The clearest difference is update cadence: INFINIT SMART KEY at every 5 weeks against Run Custom JS on Background's every 4 months. INFINIT SMART KEY also leads on iOS requirement (12.0 vs 17.6). 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.
INFINIT SMART KEY ships an update every 5 weeks, Run Custom JS on Background every 4 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.
| Parameter | INFINIT SMART KEY | Run Custom JS on Background |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 54 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Hatem Alsehimi | Takada Hiroki |
In-app purchases
INFINIT SMART KEY
No in-app purchases
Run Custom JS on Background
No in-app purchases
Questions
Is INFINIT SMART KEY free?
Is Run Custom JS on Background free?
Do INFINIT SMART KEY or Run Custom JS on Background have ads?
Which is updated more often, INFINIT SMART KEY or Run Custom JS on Background?
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