# Harm Reduction Sisters vs Dose Sure

The clearest difference is update cadence: Dose Sure at every 3 weeks against Harm Reduction Sisters's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Harm Reduction Sisters ships an update every 3 months, Dose Sure every 3 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Harm Reduction Sisters | Dose Sure |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 8 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Harm Reduction Sisters](https://appshunter.io/developer/1786415621) | [Vasilij Sviridov](https://appshunter.io/developer/1312639303) |

## What reviewers say

### Harm Reduction Sisters

[App page](https://appshunter.io/ios/app/harm-reduction-sisters/id6739639418)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dose Sure

[App page](https://appshunter.io/ios/app/dose-sure/id6770234451)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Harm Reduction Sisters free?

Harm Reduction Sisters is free to download, with no in-app purchases.

### Is Dose Sure free?

Dose Sure is free to download, with no in-app purchases.

### Do Harm Reduction Sisters or Dose Sure have ads?

Neither Harm Reduction Sisters nor Dose Sure shows ads.

### Which is updated more often, Harm Reduction Sisters or Dose Sure?

Harm Reduction Sisters ships an update every 3 months, and Dose Sure every 3 weeks. Most recently, Harm Reduction Sisters was updated on October 30, 2026 and Dose Sure on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*