# AnnotateUp vs SitePair

The clearest difference is device support: AnnotateUp at 4 against SitePair's 1. On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. AnnotateUp sells 1 one-off in-app purchase and SitePair sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | AnnotateUp | SitePair |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 10 MB | 12 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Aidaluu Inc.](https://appshunter.io/developer/412506671) | [Vladimir Kamnev](https://appshunter.io/developer/1608911515) |

## What reviewers say

### AnnotateUp

[App page](https://appshunter.io/ios/app/annotateup-image-annotation/id6473059257)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Upgrade (Perpetual) | $7.99 | one-time |


### SitePair

[App page](https://appshunter.io/ios/app/sitepair-timestamp-camera/id6809883333)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SitePair Pro | $4.99 | per month |
| SitePair Pro | $29.99 | per year |


## Frequently asked questions

### Is AnnotateUp free?

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

### Is SitePair free?

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

### Do AnnotateUp or SitePair have ads?

Neither AnnotateUp nor SitePair shows ads.

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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.*