Comparison

C% vs EarRest

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

Head to head
About

C%

Track the battery life of devices without built-in indicators. Log charges to get personalized estimates based on your usage habits. View all devices sorted by urgency and receive timely notifications.

Highlights
  • Personalized battery estimates
  • Device urgency sorting
  • Home screen widgets
  • Timely charging notifications
  • Supports numerous device types
  • Charge history and usage charts
Features
Read full description

How long has your electric shaver actually been sitting on empty? When did you last charge your earbuds? For devices without their own battery indicator, it's genuinely hard to know. C% - Charging Tracker keeps tabs on all of them. Tap once to log a charge, and the app estimates how much battery life is left based on your real habits, not just spec-sheet numbers. • Smart and personalised After a few charges, C% learns your actual usage pattern for each device. Your laptop that never makes it the full 20 hours? Your earbuds you charge twice a day? The estimates adjust to match. The more you use it, the more accurate it gets. • Everything at a glance The main screen shows all your devices sorted by urgency, so the ones that need attention rise to the top. A summary bar at the top tells you how many are fine, and how many need charging right now. Tap any device to see its full charge history, weekly usage chart, and how your habits compare to expected battery life. • Widgets that actually do something Add the home screen widget to see battery status for your most important devices without opening the app. Tap the bolt button right from the widget to log a charge instantly. • Notifications that know when to stop C% sends a heads-up before each device's battery is predicted to run out, and a nudge if you've gone unusually long without charging. No constant buzzing, just timely reminders when they matter. • Built for real life Supports smartphones, tablets, smartwatches, wireless earbuds, laptops, game controllers, e-readers, electric shavers, smart toothbrushes, drawing tablets, portable speakers, and more.

About

EarRest

This app monitors your Bluetooth headphone usage and automatically reminds you to take breaks to protect your hearing. It tracks listening time, offers customizable break intervals, and provides historical data to help you build healthier habits.

Highlights
  • Automatic Bluetooth headphone tracking
  • Customizable break reminders
  • Live Activity and Dynamic Island integration
  • Home and Lock Screen widgets
  • Quiet Hours (Do Not Disturb)
  • Listening history
  • macOS companion app
Features
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Wearing headphones for hours without a break can quietly damage your hearing. EarRest watches your Bluetooth headphones in the background and reminds you to take them off and give your ears a rest — automatically. Just connect your AirPods or any Bluetooth headphones and EarRest starts timing. When you have been listening long enough, you get a gentle notification to take a break, and the next cycle starts on its own. No taps, no rituals — it simply works. Key Features: • Automatic Tracking: Detects when your Bluetooth headphones connect or disconnect and starts or stops the timer for you. • Break Reminders: Pick an interval (20 / 30 / 45 / 60 minutes) and get notified when it is time to rest your ears. • Live Activity & Dynamic Island: See wearing time and break progress at a glance on your Lock Screen and in the Dynamic Island. • Home & Lock Screen Widgets: Keep your listening time visible with widgets in multiple sizes. • Quiet Hours: Set a do-not-disturb window (even across midnight) — reminders wait politely until it ends. • Listening History: Review how long you wear your headphones each day and build healthier habits. • Works on Mac Too: A lightweight menu bar app for macOS. • Privacy First: Everything runs locally on your device. No account, no tracking, no internet required. Your hearing does not get a second chance. Let EarRest help you enjoy music, podcasts, and calls — without overdoing it. Terms of Use: https://sites.google.com/view/earrest-terms Privacy Policy: https://sites.google.com/view/earrest-privacy

Screenshots

C%4 screens
EarRest4 screens

Verdict

The call

The clearest difference is update cadence: EarRest at every 4 days against C%'s every 3 weeks. C%'s advantage is ratings volume (3 vs 1). On price, rating, ads and in-app purchases 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. C% sells 1 one-off in-app purchase and EarRest sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for C% against 5.0 for EarRest. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

UpkeepUpdate frequency

C% ships an update every 3 weeks, EarRest every 4 days. The most recent releases landed on August 9, 2026 and September 25, 2026 respectively.

Scorecard2 real differences · 7 level
C% versus EarRest: the parameters behind the verdict, then further details
ParameterC%EarRest
PriceFreeFree
Rating5.0 (3 ratings)5.0 (1 ratings)
Number of ratings3 — better1
Update frequencyEvery 3 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size5 MB10 MB
Age rating4+4+
DeveloperMounif Fatayri月梅 孙

Customer experience

C%

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

EarRest

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

C%

One-time1
  • Unlock Unlimited Devices$1.99
3 purchases

EarRest

Subscriptions2
  • EarRest Pro Monthly$0.991 Month
  • EarRest Pro Yearly7 Days trial$4.991 Year
One-time1
  • EarRest Pro Lifetime$9.99

Questions

Is C% free?
C% is free to download, with in-app purchases available.
Is EarRest free?
EarRest is free to download, with in-app purchases available.
Which has better reviews, C% or EarRest?
C% and EarRest are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.
Do C% or EarRest have ads?
Neither C% nor EarRest shows ads.
Which is updated more often, C% or EarRest?
C% ships an update every 3 weeks, and EarRest every 4 days. Most recently, C% was updated on August 9, 2026 and EarRest on September 25, 2026.

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