# OZsurvey vs ISA Competitions

The clearest difference is ads: ISA Competitions at none against OZsurvey's shown. ISA Competitions also leads on update cadence (every 5 weeks vs every 5 months). OZsurvey's advantage is iOS requirement (13.0 vs 15.1). 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.

OZsurvey ships an update every 5 months, ISA Competitions every 5 weeks. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | OZsurvey | ISA Competitions |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 5 weeks** |
| Size | 51 MB | 46 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DEVELOPMENT ONE ZERO LTDA](https://appshunter.io/developer/1079919113) | [Mauro Mendonca](https://appshunter.io/developer/442007421) |

## What reviewers say

### OZsurvey

[App page](https://appshunter.io/ios/app/ozsurvey/id6446942161)

**Features:** macOS Compatibility

**In-app purchases:** none


### ISA Competitions

[App page](https://appshunter.io/ios/app/isa-competitions/id6759742398)

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

**In-app purchases:** none


## Frequently asked questions

### Is OZsurvey free?

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

### Is ISA Competitions free?

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

### Do OZsurvey or ISA Competitions have ads?

OZsurvey shows ads; ISA Competitions does not.

### Which is updated more often, OZsurvey or ISA Competitions?

OZsurvey ships an update every 5 months, and ISA Competitions every 5 weeks. Most recently, OZsurvey was updated on September 9, 2026 and ISA Competitions on September 13, 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.*