Comparison

Battery Phone Guard + Widget vs BlankState Diagnostic

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

Head to head
About

Battery Phone Guard + Widget

Prevent battery degradation by setting custom charging alerts. This app notifies you when your device reaches a desired charge level, helping you avoid overcharging and extend battery lifespan. Features include Apple Watch integration and home screen widgets.

Highlights
  • Customizable charge threshold alerts
  • Loud, unmissable alarms
  • Apple Watch app and complication
  • Home screen widgets
  • Ad-free premium option
  • Lifetime purchase option
Features
Read full description

Your iPhone battery degrades every time you overcharge it. Battery Alarm fixes that. Set a threshold — 80% is the sweet spot — and get a loud, unmissable alarm the moment your battery hits it. Plug in, walk away, and trust Battery Alarm to tell you when to unplug. No more compulsively checking. No more degraded battery capacity after a year of overnight charging. What's new in version 3.0 * Battery Alarm has been completely rebuilt from the ground up. * Brand new design — dark, premium, and built around a clean amber and navy visual language. Every screen redesigned. * Apple Watch app — set and cancel your alarm directly from your wrist. Adjust your charge threshold using the Digital Crown. No need to reach for your phone. * Apple Watch complication — see your iPhone's battery percentage directly on your watch face. Your iPhone charge level, glanceable on your wrist at any time. This is not something Apple provides natively — Battery Alarm brings it to your watch face. * Home screen widgets — three sizes. See your target charge level and alarm status without opening the app. * Lifetime purchase — a one-time payment that unlocks everything, forever. No subscription required if you prefer to pay once. How it works * Set your charge threshold. Pick your alarm sound. Done. Battery Alarm runs quietly in the background and fires when it matters. Battery Alarm Premium unlocks: * Ad-free experience * Premium and system alert sounds * Custom sounds from your files * All current and future features Privacy Policy: https://bytehood.com/app-store-privacy-policy.html Terms and Conditions: https://bytehood.com/battery-alarm.html

About

BlankState Diagnostic

Read full description

BlankState Diagnostic is a comprehensive mobile device hardware testing tool designed for ITAD operators, refurbishers, and enterprise IT teams. Launched as an App Clip from a QR code, it runs 33 hardware diagnostic tests across sensors, cameras, display, audio, connectivity, and biometrics — with no App Store download required. AUTOMATED TESTS • Wi-Fi, Bluetooth, GPS, Cellular, Ultra Wideband • Accelerometer, Gyroscope, Magnetometer, Barometer • Battery, Storage, True Tone, ProMotion, LiDAR • Touch ID / Face ID, Wireless Charging SEMI-AUTOMATED TESTS • Flashlight (camera-verified light emission) • Brightness range, Proximity sensor, Ambient light • Earpiece audio path, Volume buttons, Taptic Engine USER-ASSISTED TESTS • Touchscreen grid with multi-touch verification • Display colour cycle for dead pixel detection • OLED burn-in, uniformity, and ghost touch detection • Speaker and microphone with auto-detection • All camera lenses including rear microphone Results are sent directly to the BlankState Mac application for inclusion in certified device health reports. Designed for R2v3 and ADISA compliance workflows.

Screenshots

Battery Phone Guard + Widget4 screens
BlankState Diagnostic4 screens

Verdict

The call

The clearest difference is in-app purchases: BlankState Diagnostic at none against Battery Phone Guard + Widget's 3. Battery Phone Guard + Widget's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 17.6). On price, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Battery Phone Guard + Widget sells 3 in-app purchases, starting at $2.99 per month. BlankState Diagnostic asks for nothing beyond the download.

UpkeepUpdate frequency

Battery Phone Guard + Widget ships an update weekly, BlankState Diagnostic every 4 days. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Battery Phone Guard + Widget versus BlankState Diagnostic: the parameters behind the verdict, then further details
ParameterBattery Phone Guard + WidgetBlankState Diagnostic
PriceFreeFree
Rating4.4 (41 ratings) — better—
Positive reviews57.1% of reviews—
Number of ratings41 — better—
Update frequencyWeeklyEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size22 MB1 MB
Age rating4+4+
DeveloperBytehoodBlankState

In-app purchases

3 purchases

Battery Phone Guard + Widget

Subscriptions2
  • Premium Monthly$2.991 Month
  • Premium Yearly7 Days trial$6.991 Year
One-time1
  • Premium Lifetime$9.99
None

BlankState Diagnostic

No in-app purchases

Questions

Is Battery Phone Guard + Widget free?
Battery Phone Guard + Widget is free to download, with in-app purchases available.
Is BlankState Diagnostic free?
BlankState Diagnostic is free to download, with no in-app purchases.
Do Battery Phone Guard + Widget or BlankState Diagnostic have ads?
Neither Battery Phone Guard + Widget nor BlankState Diagnostic shows ads.
Which is updated more often, Battery Phone Guard + Widget or BlankState Diagnostic?
Battery Phone Guard + Widget ships an update weekly, and BlankState Diagnostic every 4 days. Most recently, Battery Phone Guard + Widget was updated on November 12, 2026 and BlankState Diagnostic on October 31, 2026.

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