I am looking for a high-powered magnification app that is capable of magnifying above 100%. Are there any magnification/telescoping apps like this that are accessible with voiceover?
There are a number of magnifiers listed here: http://www.applevis.com/apps/ios-apps-for-blind-and-vision-impaired
However, if you are only looking for something basic and that will magnify by 100%, you could simply open the camera app, set the rotor to Zoom, and flick up and down as needed.
I'm not a low vision user, but the (paid) app I've heard most recommended by low vision users for high-powered magnification purposes is VisionAssist by Slinkyware. I've linked you to the AppleVis Directory entry, but you can probably find more discussion about this app. Another good, free magnification app that was mentioned on the Mac-access mailing list is Brighter and Bigger. Here's the App Store link, since this app doesn't seem to have an AppleVis entry, or be mentioned anywhere else on this site.
Both of these are universal apps that are compatible with VoiceOver. I think you may have more color theme/contrast options with VisionAssist, but you really need another low vision user to give you an assessment. Both apps also let you freeze the picture and then magnify further, because holding the camera stable at high magnification levels can be a problem. Hope this helps.
Comments
Some magnifiers here
Try VisionAssist or Brighter and Bigger
I'm not a low vision user, but the (paid) app I've heard most recommended by low vision users for high-powered magnification purposes is VisionAssist by Slinkyware. I've linked you to the AppleVis Directory entry, but you can probably find more discussion about this app. Another good, free magnification app that was mentioned on the Mac-access mailing list is Brighter and Bigger. Here's the App Store link, since this app doesn't seem to have an AppleVis entry, or be mentioned anywhere else on this site.
• Brighter and Bigger (free) by Kazunoru Asada
https://itunes.apple.com/us/app/brighter-and-bigger/id452483657?mt=8
Both of these are universal apps that are compatible with VoiceOver. I think you may have more color theme/contrast options with VisionAssist, but you really need another low vision user to give you an assessment. Both apps also let you freeze the picture and then magnify further, because holding the camera stable at high magnification levels can be a problem. Hope this helps.