How to buy more storage on mac?

I use a Macbook Air (13-inch 2017) with only 128GB storage on SSD disk. I always get the message - no enough space. Can I buy more storage for my mac?

Modern Macs don’t allow post-purchase internal storage upgrades. Your two practical alternatives are adding an external SSD or subscribing to iCloud+ for instant, off-site capacity.

But you need to know both external SSD and iCloud subscription plan are high in price. For instance, 1 TB SANDISK portable SSD ( SDSSDE30-1T00-G26) would cost you $135.99 and iCloud 2TB/month plan needs $119.88 per year.

Comparatively, a professional Mac cleaner software like iBoysoft Cleaner brings higher cost performance. Only $29.95, you can use it to quickly scan your internal Mac disk, download, user folder and other folders, and delete unnecessary files/apps, large files, system junks, duplicate files, similar photos, etc., from mac to dramatically free up Mac space with AI smart advice. No accidental deletes on system key files.

Hi, yuri, thank you for your recommendation. And I have tested on the iBoysoft Cleaner you recommended. It works for me. And I do really like its large file feature. instantly detect all my large files on Mac and list them out by size (large > small).

I can choose multiple large files I don’t need any more and delete them all at one stroke. That’s quite nice. The duplicate files also very practical to me. I don’t need to find the repeated files one by one on my own.