Find chemical structure by exact mass (m/z).
Instant search in a database of known structures with exact mass less than 340 Da (about 35 million) created from PubChem compounds database.

What’s New

Version 2.0

This app has been updated by Apple to use the latest Apple signing certificate.

Database size increased to 35 million and 340 Da.
Note that the app size becomes about 4 GB.

Ratings and Reviews

4.3 out of 5
4 Ratings

4 Ratings

Soren Einar Rasmussen ,

Great idea but with major limitation

Great idea and simple, clean implementation. However, hits are only retrieved for whole numbers on my iPhone SE. This makes the app unusable in practice. I hope this issue will get fixed quickly.

ChemConnector ,

Great use of the EPA CompTox Dashboard Chemistry Data

I am the project lead for the Chemistry Dashboard at the EPA and I am glad to see that the data that we released to the community as open data has been used in this way to produce this app. It will be very useful for mass spectrometrists just doing basic lookup of potential chemical structures in environmental media specifically. I look forward to seeing future enhancements!

App Privacy

The developer, Kirill Blinov, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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