# Cerra Flex vs Just

The clearest difference is ads: Cerra Flex at none against Just's shown. Cerra Flex also leads on iOS requirement (12.0 vs 15.1). Just's advantage is update cadence (every 4 weeks vs every 3 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Cerra Flex ships an update every 3 months, Just every 4 weeks. The most recent releases landed on September 19, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Cerra Flex | Just |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Size | 168 MB | 33 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rewardz Private Limited](https://appshunter.io/developer/994797501) | [Taste Work](https://appshunter.io/developer/1789737432) |

## What reviewers say

### Cerra Flex

[App page](https://appshunter.io/ios/app/cerra-flex/id1551775901)

**In-app purchases:** none


### Just

[App page](https://appshunter.io/ios/app/just-eatsy/id6740397347)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cerra Flex free?

Cerra Flex is free to download, with no in-app purchases.

### Is Just free?

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

### Do Cerra Flex or Just have ads?

Just shows ads; Cerra Flex does not.

### Which is updated more often, Cerra Flex or Just?

Cerra Flex ships an update every 3 months, and Just every 4 weeks. Most recently, Cerra Flex was updated on September 19, 2026 and Just on October 2, 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.*