# Helibrain vs ChallengeCircle

Helibrain and ChallengeCircle 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. Helibrain sells 3 in-app purchases, starting at $6.99 per month and ChallengeCircle sells 4 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Helibrain ships an update every 8 days, ChallengeCircle fortnightly. The most recent releases landed on September 11, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Helibrain | ChallengeCircle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Fortnightly |
| Size | 42 MB | 57 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Robert Loshkarev](https://appshunter.io/developer/1841702873) | [AGBO Ventures LTD](https://appshunter.io/developer/1362276420) |

## What reviewers say

### Helibrain

[App page](https://appshunter.io/ios/app/helibrain-brain-performance/id6752911563)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $6.99 | per month |
| Yearly Premium | $29.99 | per year |
| Unlock all recommendations | $19.99 | one-time |


### ChallengeCircle

[App page](https://appshunter.io/ios/app/challengecircle/id6757082724)

**Features:** Apple Wallet

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $0.99 | per 7 days |
| Monthly Premium | $2.99 | per month |
| Monthly Premium | $24.99 | per year |
| Premium | $59.99 | one-time |


## Frequently asked questions

### Is Helibrain free?

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

### Is ChallengeCircle free?

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

### Do Helibrain or ChallengeCircle have ads?

Neither Helibrain nor ChallengeCircle shows ads.

### Which is updated more often, Helibrain or ChallengeCircle?

Helibrain ships an update every 8 days, and ChallengeCircle fortnightly. Most recently, Helibrain was updated on September 11, 2026 and ChallengeCircle on September 20, 2026.

---

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