# Duo vs Intersta

The clearest difference is iOS requirement: Duo at 13.0 against Intersta's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Duo ships an update every 2 months, Intersta every 5 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Duo | Intersta |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 45 MB | 27 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [IOCODE FOR DATA ANALYSIS](https://appshunter.io/developer/1618205901) | [Intersta L.L.C-FZ](https://appshunter.io/developer/1685172680) |

## What reviewers say

### Duo

[App page](https://appshunter.io/ios/app/duo-pet/id1613073562)

**Features:** macOS Compatibility

**In-app purchases:** none


### Intersta

[App page](https://appshunter.io/ios/app/intersta/id6748322551)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Duo free?

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

### Is Intersta free?

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

### Do Duo or Intersta have ads?

Neither Duo nor Intersta shows ads.

### Which is updated more often, Duo or Intersta?

Duo ships an update every 2 months, and Intersta every 5 weeks. Most recently, Duo was updated on November 3, 2026 and Intersta on October 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.*