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App half-life (t½) and the proportion of apps still available to download from the app stores at the end of the study.
| Search term | Platform | App t½ | Apps remaining at end of study |
| Depression | Android | >9 months | 74.2% |
|
|
iOS | >9 months | 90.0% |
| Bipolar disorder | Android | >9 months | 74.4% |
|
|
iOS | >9 months | 93.6% |
| Suicide | Android | >9 months | 85.2% |
|
|
iOS | >9 months | 92.9% |
