# iCalc Champions vs ZenAI

The clearest difference is in-app purchases: iCalc Champions at none against ZenAI's 3. iCalc Champions also leads on device support (3 vs 1) and iOS requirement (14.0 vs 18.5). On price, update cadence and ads there is nothing between them.

Both are free to download. ZenAI sells 3 one-off in-app purchases. iCalc Champions asks for nothing beyond the download.

iCalc Champions ships an update every 4 days, ZenAI every 2 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | iCalc Champions | ZenAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (12 ratings)](https://appshunter.io/ios/app/icalc-champions-basic-math/id1544688547/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | Free | — |
| Size | 14 MB | 6 MB |
| Requires iOS | **14.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jake Elrod](https://appshunter.io/developer/365336355) | [ZenStudy Technologies - FZCO](https://appshunter.io/developer/1782979211) |

## What reviewers say

### iCalc Champions

[App page](https://appshunter.io/ios/app/icalc-champions-basic-math/id1544688547)

This educational app adapts to your math skill level, increasing problem difficulty as you improve. It offers contextually relevant video explanations for any problem you find challenging.

**Highlights:** Adaptive difficulty levels, Video explanations for problems, Arithmetic practice, Geometry practice, Progressive skill challenge

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

**In-app purchases:** none


### ZenAI

[App page](https://appshunter.io/ios/app/zenai-study-smarter/id6747843527)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Credit | $0.99 | one-time |
| 5 Credits | $3.99 | one-time |
| 10 Credits | $5.99 | one-time |


## Frequently asked questions

### Is iCalc Champions free?

iCalc Champions is free to download, with no in-app purchases.

### Is ZenAI free?

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

### Do iCalc Champions or ZenAI have ads?

Neither iCalc Champions nor ZenAI shows ads.

### Which is updated more often, iCalc Champions or ZenAI?

iCalc Champions ships an update every 4 days, and ZenAI every 2 days. Most recently, iCalc Champions was updated on November 3, 2026 and ZenAI on November 5, 2026.

---

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