# Bulbus vs FocusMath

The clearest difference is update cadence: FocusMath at every 4 days against Bulbus's every 9 days. Bulbus's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Bulbus sells 3 in-app purchases, starting at $3.99 per month and FocusMath sells 4 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Bulbus ships an update every 9 days, FocusMath every 4 days. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Bulbus | FocusMath |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 33 MB | 37 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Adeline Lefebvre](https://appshunter.io/developer/1798089881) | [HK-TECH](https://appshunter.io/developer/1441516879) |

## What reviewers say

### Bulbus

[App page](https://appshunter.io/ios/app/bulbus/id6742380845)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abonnement mensuel | $3.99 | per month |
| Abonnement annuel | $34.99 | per year |
| Accès complet | $8.99 | one-time |


### FocusMath

[App page](https://appshunter.io/ios/app/focusmath/id6759092912)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Monthly Premium | $3.99 | per month |
| Annual Premium | $24.99 | per year |
| Lifetime Premium | $44.99 | one-time |


## Frequently asked questions

### Is Bulbus free?

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

### Is FocusMath free?

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

### Do Bulbus or FocusMath have ads?

Neither Bulbus nor FocusMath shows ads.

### Which is updated more often, Bulbus or FocusMath?

Bulbus ships an update every 9 days, and FocusMath every 4 days. Most recently, Bulbus was updated on October 1, 2026 and FocusMath on September 30, 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.*