# Formula Sift vs AntiSick

Formula Sift and AntiSick are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Formula Sift sells 3 in-app purchases, starting at $2.99 per month and AntiSick sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Formula Sift | AntiSick |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 7 MB | 34 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [占辉 百](https://appshunter.io/developer/1081455103) | [城林 吴](https://appshunter.io/developer/1849289388) |

## What reviewers say

### Formula Sift

[App page](https://appshunter.io/ios/app/formula-sift-ingredient-check/id6766007677)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Membership | $2.99 | per month |
| Yearly Premium Membership | $9.99 | per year |
| Lifetime Premium | $17.99 | one-time |


### AntiSick

[App page](https://appshunter.io/ios/app/antisick-motion-sickness/id6790603332)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AntiSick Pro Monthly | $5.99 | per month |
| AntiSick Pro Lifetime | $16.99 | one-time |


## Frequently asked questions

### Is Formula Sift free?

Formula Sift is free to download, with in-app purchases available.

### Is AntiSick free?

AntiSick is free to download, with in-app purchases available.

### Do Formula Sift or AntiSick have ads?

Neither Formula Sift nor AntiSick shows ads.

### Which is updated more often, Formula Sift or AntiSick?

Formula Sift ships an update weekly, and AntiSick weekly. Most recently, Formula Sift was updated on October 31, 2026 and AntiSick on October 28, 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.*