Disk Graph vs Voice in a Can
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Disk Graph
Analyze your device's storage to identify large files and identify items not accessed recently. This utility helps you reclaim disk space by showing what's taking up the most room. Access directories directly through the Files app.
- Inspect disk usage
- Find large files
- Identify old files
- Reclaim disk space
- File access via Files app
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Inspect your disk and find the files that occupy the most space or that haven’t been modified in a long time. Only directories reachable in the Files app can be opened.
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.
- Alexa on Apple Watch, iPhone, iPad
- Smart home device control
- Voice commands without 'Alexa'
- Shopping list management
- Timer and alarm setting
- Customizable watch complications
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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/
Screenshots
Verdict
The clearest difference is price: Voice in a Can at Free against Disk Graph's $5.99. Voice in a Can also leads on ratings volume (220 vs 5) and device support (5 vs 3). Disk Graph's advantage is in-app purchases (none vs 5) and rating (4.2 vs 3.9). On review sentiment, update cadence, ads 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
Voice in a Can is free to download; Disk Graph costs $5.99 up front. Voice in a Can sells 5 one-off in-app purchases. Disk Graph asks for nothing beyond the download.
Disk Graph holds the better App Store score, 4.2 against 3.9. That said, the two scores are not equally well evidenced: Voice in a Can has 220 ratings behind it against 5, so its average is the more settled of the two. Written reviews split almost evenly too, at 74% and 75% positive.
Disk Graph ships an update every 3 months, Voice in a Can every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | Disk Graph | Voice in a Can |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.2 (5 ratings) — better | 3.9 (220 ratings) |
| Positive reviews | 74.5% of reviews | 75.3% of reviews — better |
| Number of ratings | 5 | 220 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac, Apple Watch, Vision Pro — better |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Nicolas Kick | Atadore |
Customer experience
Disk Graph
Voice in a Can
Bugs and requests
Disk Graph
Not enough reviews yet to summarise bugs or 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
In-app purchases
Disk Graph
No in-app purchases
Voice in a Can
- Tiny thanks$0.99
- Small thanks$1.99
- Thanks$2.99
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- Big thanks$4.99
- Massive Thanks$9.99
