# Did You Know.. vs Math From Counting to Calculus

The clearest difference is in-app purchases: Math From Counting to Calculus at none against Did You Know..'s 1. Math From Counting to Calculus also leads on iOS requirement (15.0 vs 17.6). Did You Know..'s advantage is ads (none vs shown) and update cadence (every 5 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. Did You Know.. sells 1 one-off in-app purchase. Math From Counting to Calculus asks for nothing beyond the download.

Did You Know.. ships an update every 5 days, Math From Counting to Calculus every 3 weeks. The most recent releases landed on October 15, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Did You Know.. | Math From Counting to Calculus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/did-you-know/id6761013561/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 41 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [柏生 杨](https://appshunter.io/developer/1887198371) | [Alexis Glorieux](https://appshunter.io/developer/6797071387) |

## What reviewers say

### Did You Know..

[App page](https://appshunter.io/ios/app/did-you-know/id6761013561)

Discover fascinating facts across various subjects in a quick and engaging format. This app delivers bite-sized insights without lengthy reading or pressure, making learning accessible and memorable.

**Highlights:** Short, impactful facts, Bite-sized learning, Covers science, psychology, history, Engaging swipe interface, No long reading required

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Unlimited Facts | $3.99 | one-time |


### Math From Counting to Calculus

[App page](https://appshunter.io/ios/app/math-from-counting-to-calculus/id6803933193)

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

**In-app purchases:** none


## Frequently asked questions

### Is Did You Know.. free?

Did You Know.. is free to download, with in-app purchases available.

### Is Math From Counting to Calculus free?

Math From Counting to Calculus is free to download, with no in-app purchases.

### Do Did You Know.. or Math From Counting to Calculus have ads?

Math From Counting to Calculus shows ads; Did You Know.. does not.

### Which is updated more often, Did You Know.. or Math From Counting to Calculus?

Did You Know.. ships an update every 5 days, and Math From Counting to Calculus every 3 weeks. Most recently, Did You Know.. was updated on October 15, 2026 and Math From Counting to Calculus on October 23, 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.*