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Mobile Diary Apps to Track Chemotype Effects

Written by Lance Griffin

Electronic diaries may have significant clinical applications for pain management.Cannabis consumers can use electronic diary apps to journal and organize experiences with specific cultivars and chemotypes. The following free apps are available on android and iOS.


Releaf allows medical cannabis patients to measure the effects of a given plant, chemotype, and ingestion method. The user enters the name of a specific plant and chemotype (type 1, 2, or 3); chemotype details can be entered in percentage or milligram quantities of specific cannabinoids and terpenes. The app then organizes, analyzes, and presents experiential recordings as user-friendly reports. A notes feature allows the user to jot down personal thoughts and feelings.

Data from this app was used in a 2018 investigation in Frontiers in Pharmacology that supports clinically significant symptom relief from cannabis.1


Strainprint offers similar features to Releaf; users track ingestion, symptoms, and side effects. However, cultivars and chemotypes from major Canadian brands are provided via a search feature, and chemotype information is limited to THC:CBD and a summary of major terpenes. Users can search their own log to rank entries by a specific effect such as relaxation.

Day One

Day One is a general journaling app. It is not specific to cannabis and does not include any chemotype database features. It offers the user the freedom to write and collect media to develop a traditional diary (albeit digital). The app offers a search by keyword and the ability to create tags and hashtags.

There are a good number of other general journaling apps, such as Journey and Penzu. These options would be more suited to the user seeking creative control and a personalized, reflective journal.

Journal apps can help cannabis consumers track chemotypes and their effects. These free options may be perfect for the user seeking to organize and refine their experience. Findings can also be shared with healthcare professionals and budtenders.


1 Burton C., et al. “Are electronic diaries useful for symptoms research? A systematic review.” Journal of Psychosomatic Research. 2007, 62(5): 553-61. Times cited = 17, Journal impact factor = 3.268

2 Stith, Sarah S. et al. “Patient-Reported Symptom Relief Following Medical Cannabis Consumption.” Frontiers in Pharmacology. 2018, 9: 916.doi:10.3389/fphar.2018.00916. Times cited = 2, Journal impact factor = 3.831

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Lance Griffin


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