Comparison

Synapse vs Battery Phone Guard + Widget

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

Head to head
About

Synapse

Features
Read full description

The application provides actionable insight through data collation, incident reporting, intelligence gathering and analysis. Streamlining operations by optimising decision making, reducing response times, and improving communications to better protect people, assets, and locations.

About

Battery Phone Guard + Widget

This utility app provides personalized sound alerts for your device's battery level. Set custom thresholds to receive notifications when your battery reaches specific percentages, ensuring you never miss a charge. It runs efficiently in the background with an easy-to-use interface.

Highlights
  • Custom charge thresholds
  • Personalized sound alerts
  • Background operation
  • User-friendly interface
  • Ad-free subscription 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

Screenshots

Synapse2 screens
Battery Phone Guard + Widget4 screens

Verdict

The call

The clearest difference is in-app purchases: Synapse at none against Battery Phone Guard + Widget's 3. Battery Phone Guard + Widget's advantage is update cadence (weekly vs every 2 months). On price, ads, device support and iOS requirement 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. Synapse asks for nothing beyond the download.

UpkeepUpdate frequency

Synapse ships an update every 2 months, Battery Phone Guard + Widget weekly. The most recent releases landed on October 27, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level
Synapse versus Battery Phone Guard + Widget: the parameters behind the verdict, then further details
ParameterSynapseBattery Phone Guard + Widget
PriceFreeFree
Rating—4.4 (41 ratings) — better
Positive reviews—57.1% of reviews
Number of ratings—41 — better
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.015.0
Further details — not scored
Size60 MB22 MB
Age rating4+4+
DeveloperZinc DigitalBytehood

In-app purchases

None

Synapse

No 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

Questions

Is Synapse free?
Synapse is free to download, with no in-app purchases.
Is Battery Phone Guard + Widget free?
Battery Phone Guard + Widget is free to download, with in-app purchases available.
Do Synapse or Battery Phone Guard + Widget have ads?
Neither Synapse nor Battery Phone Guard + Widget shows ads.
Which is updated more often, Synapse or Battery Phone Guard + Widget?
Synapse ships an update every 2 months, and Battery Phone Guard + Widget weekly. Most recently, Synapse was updated on October 27, 2026 and Battery Phone Guard + Widget on November 4, 2026.

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