# Binomial Calculator vs TouchGrass Screen Time Control

The clearest difference is in-app purchases: Binomial Calculator at none against TouchGrass Screen Time Control's 6. TouchGrass Screen Time Control's advantage is ads (none vs shown) and update cadence (daily vs every 10 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. TouchGrass Screen Time Control sells 6 one-off in-app purchases. Binomial Calculator asks for nothing beyond the download.

Binomial Calculator ships an update every 10 months, TouchGrass Screen Time Control daily. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Binomial Calculator | TouchGrass Screen Time Control |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/touchgrass-screen-time-control/id6760534504/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 25 MB |
| Requires iOS | 18.5 | **18.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Tang](https://appshunter.io/developer/1780758221) | [JOSEPH SAMUEL GRZYB](https://appshunter.io/developer/1884839792) |

## What reviewers say

### Binomial Calculator

[App page](https://appshunter.io/ios/app/binomial-calculator/id6756537681)

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

**In-app purchases:** none


### TouchGrass Screen Time Control

[App page](https://appshunter.io/ios/app/touchgrass-screen-time-control/id6760534504)

This app encourages you to reduce screen time by nurturing a virtual plant that grows based on your usage habits. Build focus streaks and commit to dedicated sessions where you can set personal stakes for accountability.

**Highlights:** Virtual plant growth based on screen time, Focus session commitment, Streak building, Accountability stakes, App blocking

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 Seeds | $0.99 | one-time |
| 100 Seeds | $4.99 | one-time |
| 200 Seeds | $9.99 | one-time |
| 500 Seeds | $24.99 | one-time |
| 1,000 Seeds | $49.99 | one-time |
| 2,000 Seeds | $99.99 | one-time |


## Frequently asked questions

### Is Binomial Calculator free?

Binomial Calculator is free to download, with no in-app purchases.

### Is TouchGrass Screen Time Control free?

TouchGrass Screen Time Control is free to download, with in-app purchases available.

### Do Binomial Calculator or TouchGrass Screen Time Control have ads?

Binomial Calculator shows ads; TouchGrass Screen Time Control does not.

### Which is updated more often, Binomial Calculator or TouchGrass Screen Time Control?

Binomial Calculator ships an update every 10 months, and TouchGrass Screen Time Control daily. Most recently, Binomial Calculator was updated on October 30, 2026 and TouchGrass Screen Time Control on October 31, 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.*