Royal Conversion Battery vs TrueDetect Device Test
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Royal Conversion Battery
Read full descriptionHide full description
The App is an easy-to-use device that visibly and effectively displays how long the battery's charge or discharge will last. It also calculates how much power the battery has versus how much charge is going out, while providing the approximate amount of time the battery will remain charged. There is a wide range of battery monitors, depending on the specific application. Some of the more identifiable monitors include RV battery monitors, marine battery monitors and car battery monitoring systems.
TrueDetect Device Test
Read full descriptionHide full description
TrueDetect Device Test checks the hardware of an iPhone and reports exactly what it measured. Tap Full Test and the app works through the device one function at a time: display and touch, front and rear cameras, speaker and microphone, vibration, buttons, Wi-Fi, Bluetooth, NFC, GPS, the motion sensors, the compass, the proximity sensor, charging, and the battery. Each check ends in a clear result you can read at a glance, and every card can be opened to see the underlying measurement behind it. Two things guide the whole app: REAL READINGS, NEVER GUESSES A value is shown only when the device itself reports it. Where iOS does not expose something, the app says so instead of filling the gap with an estimate. A result you cannot trust is worse than no result. A FINDING, NOT JUST A VERDICT When a check does not pass, the app states what it found - which part, and what was measured - so the reason is on the screen rather than left to memory. Any test can also be run on its own from Manual Test, which is useful when you want to re-check a single function after handling the device. The app is made by K-Device Lab for businesses that inspect used iPhones and need an honest, repeatable record of a handset's condition. It is free, contains no advertising, and offers nothing to purchase.
Screenshots
Verdict
The clearest difference is update cadence: TrueDetect Device Test at weekly against Royal Conversion Battery's every 12 months. Royal Conversion Battery's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Royal Conversion Battery ships an update every 12 months, TrueDetect Device Test weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.
| Parameter | Royal Conversion Battery | TrueDetect Device Test |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 12 months | Weekly โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 43 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Sterling Power | AMIR AKBAR |
In-app purchases
Royal Conversion Battery
No in-app purchases
TrueDetect Device Test
No in-app purchases
Questions
Is Royal Conversion Battery free?
Is TrueDetect Device Test free?
Do Royal Conversion Battery or TrueDetect Device Test have ads?
Which is updated more often, Royal Conversion Battery or TrueDetect Device Test?
Other comparisons















