If you purchased TPE but then realised that you wanted TPE 3D instead, here are some options.
…we recommend TPE 3D as an add-on to TPE, rather than as a standalone app:
Does TPE 3D replace TPE? (short answer: no)
Also, be sure that you're interested primarily in landscape photography in varied (i.e. hilly or mountainous) terrain: this is where TPE 3D comes into its own. If you're doing cityscape photography or work primarily in flat landscapes, you probably don't need or want TPE 3D.
If you're still sure you'd like TPE 3D, here are your options:
1) Use Complete My Bundle to add it: you can get TPE, TPE 3D and Photo Transit as a bundle in the App Store at a reduced price
2) If you're sure you want to return TPE and purchase TPE 3D, please contact Apple App Store Support to request a refund on TPE. You can then purchase TPE 3D instead. (Apple does not allow developers to process refunds on behalf of customers… 🙄)
If you have any further questions, please contact us!