Screen density in APK downloads: what nodpi and xxhdpi mean
Android draws interfaces in density-independent units so the same layout looks the same physical size on different screens. Images cannot work that way, so apps ship several copies of every icon at different resolutions. Splitting those out into separate downloads is how a large app becomes a smaller one.
The density buckets
| Bucket | Roughly | Typical device |
|---|---|---|
| hdpi | 240 dots per inch | Old budget phones |
| xhdpi | 320 | Older mid-range, many tablets |
| xxhdpi | 480 | Most modern phones |
| xxxhdpi | 640 | Large flagship displays |
| nodpi | Every size included | Works on anything, larger file |
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What happens if you pick wrongly
Nothing breaks. Android scales whatever assets it finds. Choosing a bucket below your screen gives soft, slightly blurry icons. Choosing above wastes space and can make the app use marginally more memory for images.
- A very large app where the saving is hundreds of megabytes
- A phone with almost no free storage
- Downloading over an expensive metered connection
- Anything under a few hundred megabytes
- You are not sure of the screen density
- The file will be installed on more than one device
Finding your screen density
- Look at the download page on the phone itself The matching variant is marked, because the browser reports the density.
- Or use a hardware info app They report density in dots per inch and the bucket it falls into.
- Or work from the resolution A 1080 by 2400 phone at around six inches is xxhdpi. A 1440p flagship is usually xxxhdpi.
Reports screen resolution, density and the bucket, alongside the CPU details you may also need.
Same information with considerably more context, if you like the detail.
How bundles remove the question
An APKS or XAPK bundle contains the density splits together with the architecture splits, and an installer picks both. That is the whole reason bundles exist, and it is why the density question only arises when you download a single standalone APK.
Take nodpi unless storage is genuinely tight, and use a bundle installer so the question does not come up again.
Frequently asked questions
Will a low-density APK look bad?
Icons and images will be slightly soft on a high-resolution screen. Text is unaffected because it is not an image.
Does density affect performance?
Barely. Larger assets use a little more memory. It is not something you will notice.
Why do some apps have no density variants?
Because they use vector drawables, which scale to any density from one file. Well-built modern apps often do not need the split at all.
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