Comparison

Voice in a Can vs Cloud Battery

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

Head to head
About

Voice in a Can

This app provides Alexa functionality on Apple Watch, iPhone, and iPad. Control smart home devices, ask questions, and manage lists hands-free. It offers a convenient way to access Alexa's features directly from your wrist or tablet.

Highlights
  • Alexa on Apple Watch, iPhone, iPad
  • Smart home device control
  • Voice commands without 'Alexa'
  • Shopping list management
  • Timer and alarm setting
  • Customizable watch complications
Features
Read full description

The app is now free. You can thank me (the creator of the app) using an optional in-app purchase under Settings, which does not change the behavior of the app. An Apple Watch (standalone, no phone required), iPhone and iPad app for using Alexa. Control your home devices, ask general questions, add and remove items to your shopping list and set timers etc. It is an Alexa implementation. On your wrist. There are nine things you should know before getting this app: 1. The Series 4 watch and newer are supported; 2. Your phone controls installation of the app to the watch, not the app. Put your watch on a charger to speed up install time; 3. Not all audio content can be supported. Amazon don't allow third-party apps such as this app to play music, audio books or some daily-news content, make announcements or drop-in; 4. You can use a Siri Shortcut to launch the app and start speaking, just by raising your wrist on Apple Watch. See the support page on how to configure; 5. All watch complication types are supported, including those really weird ones. Also you can change the complication icon under Settings; 6. The watch app can listen automatically on launch. There is an option under settings to do the same thing on the iPhone; 7. If the weather or time are wrong, ensure you've enabled Location access in the Alexa app to the "Voice in a Can" device, and that you have granted Location permissions to the app on your phone; 8. You don't have to say "Alexa" ... just speak your command when the app is listening; 9. You can change the language that you speak and hear responses in, under "Settings" on the watch and phone. Only languages supported by Alexa are supported. The language should be set automatically. If you have questions or any support issues please don't hesitate to email damian@voiceinacan.com ... you should get a response within 24 hours, and often in minutes. This app was not created or endorsed by Amazon. Amazon, Alexa and all related logos are trademarks of Amazon.com, Inc. or its affiliates The EULA is here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Cloud Battery

This app centralizes battery levels from all your Apple devices into one view. Monitor battery status across iPhones, iPads, Macs, and Apple Watches, with notifications and widgets for easy access. Seamlessly integrates with iCloud for a hassle-free experience.

Highlights
  • Centralized battery monitoring
  • Real-time battery tracking
  • Today, Home Screen, and Lock Screen Widgets
  • Watch Complications
  • Low battery and unplug notifications
  • Siri Shortcuts integration
Features
Read full description

Cloud Battery keeps your device, accessory, and shared device battery levels in one place. On iPhone Duo, Cloud Battery adapts between the outer and inner displays. When space allows, browse your devices and battery details side by side. Use Cloud Battery on supported devices: iPhone, iPad, Mac, Apple Watch, Apple Vision Pro. Use iCloud to sync supported battery levels across your devices and share individual battery status for devices you own with people you choose. Cloud Battery includes: - Customizable Home Screen and Lock Screen widgets - Refreshed device icons, including iPhone Duo and Apple Vision Pro - At-a-glance battery levels - iCloud battery sync - iCloud sharing for battery status from devices you own - Synced battery viewing on Apple Vision Pro - Battery levels for AirPods and compatible Bluetooth accessories - Apple Watch battery rings - Low-battery and ready-to-unplug alerts for devices you own on supported platforms - App Shortcuts and Siri actions for battery level lookup and sync Cloud Battery works best with iCloud enabled on each device.

Screenshots

Voice in a Can4 screens
Cloud Battery4 screens

Verdict

The call

Voice in a Can and Cloud Battery both sit at 3.9 stars, but that hides the real split: 75% of Voice in a Can's written reviews are positive against 40% of Cloud Battery's. Voice in a Can also leads on ads (none vs shown) and iOS requirement (16.0 vs 18.0). Cloud Battery's advantage is ratings volume (1.5K vs 220). On price, rating, update cadence 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. Voice in a Can sells 5 one-off in-app purchases and Cloud Battery sells 2 one-off in-app purchases. 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 — 3.9 for Voice in a Can against 4.0 for Cloud Battery. That said, the two scores are not equally well evidenced: Cloud Battery has 1.5K ratings behind it against 220, so its average is the more settled of the two. Written reviews are what separate them: 75% of Voice in a Can's written reviews are positive against 40% of Cloud Battery's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
Voice in a Can versus Cloud Battery: the parameters behind the verdict, then further details
ParameterVoice in a CanCloud Battery
PriceFreeFree
Rating3.9 (220 ratings)4.0 (1.5K ratings) — better
Positive reviews75.3% of reviews — better39.8% of reviews
Number of ratings2201.5K — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Mac, Apple Watch, Vision ProiPhone, iPad, Apple TV, Apple Watch, Vision Pro
Requires iOS16.0 — better18.0
Further details — not scored
Size26 MB56 MB
Age rating4+4+
DeveloperAtadoreAlan Yan

Customer experience

Voice in a Can

All ratings220 ratings
Positive70.9%
Neutral5.9%
Negative23.2%
Written reviews170 reviews
Positive75.3%
Neutral2.4%
Negative22.4%

Cloud Battery

All ratings1,518 ratings
Positive73.5%
Neutral7.2%
Negative19.2%
Written reviews274 reviews
Positive39.8%
Neutral13.5%
Negative46.7%

User reviews

Voice in a Can

From 220 App Store ratings

What we love

  • 🚀 Convenient Alexa access on Apple Watch
  • 👍 Works well with smart home devices
  • 💡 Allows hands-free control without phone
  • 👍 Responsive developer support

Room to improve

  • 🐛 Occasional connectivity issues
  • 🐛 Slow response times on some devices
  • 🔋 Drains Apple Watch battery
  • 🔒 Security/privacy concerns

Cloud Battery

From 1.5K App Store ratings

What we love

  • 🚀 Useful for tracking multiple devices
  • 👍 Clean and simple design
  • 💡 Innovative concept
  • 🚀 Works across iOS, iPadOS, and macOS
  • 👍 Customizable widget options

Room to improve

  • 🐛 Inaccurate battery readings
  • 🔋 High battery consumption
  • 🐛 Syncing issues and delays
  • 🐛 Compatibility problems with newer devices
  • 🐛 Unreliable notifications

Bugs and requests

Voice in a Can

Reported bugs

2 issues
  • App freezes or crashes on launch
  • Incompatibility with newer iOS/watchOS versions

Requested features

4 requests
  • Ability to control music playback
  • Improved Apple Watch app design
  • Siri Shortcuts integration
  • Expanded Alexa functionality

Cloud Battery

Reported bugs

5 issues
  • Devices disappearing from the app
  • Widget not updating correctly
  • Crashes when trying to share device status
  • Incorrect battery percentages displayed
  • Inability to add certain devices like older MacBooks

Requested features

5 requests
  • Add support for AirPods and other Bluetooth devices
  • Improve Apple Watch integration and complication options
  • Allow customization of device order in the app and widget
  • Provide more detailed battery health information
  • Implement a background refresh mode to keep data up-to-date

In-app purchases

5 purchases

Voice in a Can

One-time5
  • Tiny thanks$0.99
  • Small thanks$1.99
  • Thanks$2.99
Show 2 more
  • Big thanks$4.99
  • Massive Thanks$9.99
2 purchases

Cloud Battery

One-time2
  • Support my work$2.99
  • Remove Ads & Customization$4.99

Questions

Is Voice in a Can free?
Voice in a Can is free to download, with in-app purchases available.
Is Cloud Battery free?
Cloud Battery is free to download, with in-app purchases available.
Which has better reviews, Voice in a Can or Cloud Battery?
Cloud Battery is rated higher. Voice in a Can averages 3.9 out of 5 from 220 ratings, while Cloud Battery averages 4.0 from 1.5K ratings.
Do Voice in a Can or Cloud Battery have ads?
Cloud Battery shows ads; Voice in a Can does not.
Which is updated more often, Voice in a Can or Cloud Battery?
Voice in a Can ships an update every 2 months, and Cloud Battery every 2 months. Most recently, Voice in a Can was updated on November 3, 2026 and Cloud Battery on November 3, 2026.

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