# Invitify vs Smart PDF Compressor

The clearest difference is in-app purchases: Smart PDF Compressor at none against Invitify's 5. Invitify's advantage is update cadence (daily vs every 9 days) and iOS requirement (12.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Invitify sells 5 one-off in-app purchases. Smart PDF Compressor asks for nothing beyond the download.

Invitify ships an update daily, Smart PDF Compressor every 9 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Invitify | Smart PDF Compressor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 9 days |
| Size | 43 MB | 4 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Huzefa Hamid](https://appshunter.io/developer/1554269570) | [Quan Dang](https://appshunter.io/developer/1868401962) |

## What reviewers say

### Invitify

[App page](https://appshunter.io/ios/app/invitify/id6742777986)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Communication Credit 100 | $1.99 | one-time |
| Communication 250 Credit | $6.99 | one-time |
| Communication Credit 500 | $12.99 | one-time |
| Communication Credit 1000 | $19.99 | one-time |
| Communication Credit 5000 | $79.99 | one-time |


### Smart PDF Compressor

[App page](https://appshunter.io/ios/app/smart-pdf-compressor-reduce/id6757997785)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Invitify free?

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

### Is Smart PDF Compressor free?

Smart PDF Compressor is free to download, with no in-app purchases.

### Do Invitify or Smart PDF Compressor have ads?

Neither Invitify nor Smart PDF Compressor shows ads.

### Which is updated more often, Invitify or Smart PDF Compressor?

Invitify ships an update daily, and Smart PDF Compressor every 9 days. Most recently, Invitify was updated on October 25, 2026 and Smart PDF Compressor on October 31, 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.*