# GLTalk vs Smart PDF Compressor

The clearest difference is in-app purchases: Smart PDF Compressor at none against GLTalk's 4. Smart PDF Compressor also leads on update cadence (every 9 days vs every 2 months). GLTalk's advantage is iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. GLTalk sells 4 one-off in-app purchases. Smart PDF Compressor asks for nothing beyond the download.

GLTalk ships an update every 2 months, Smart PDF Compressor every 9 days. The most recent releases landed on August 11, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | GLTalk | Smart PDF Compressor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (30 ratings)](https://appshunter.io/ios/app/gltalk/id1274551448/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 36.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 117 MB | 1 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [GoldLine Telemanagement Inc](https://appshunter.io/developer/1274551447) | [Quan Dang](https://appshunter.io/developer/1868401962) |

## What reviewers say

### GLTalk

[App page](https://appshunter.io/ios/app/gltalk/id1274551448)

This free VoIP application offers hassle-free calling and chatting with features like multimedia messaging, video chat, and voice conferencing. It allows for affordable international calls and provides convenient features like voicemail to email and integration with your existing address book.

**Highlights:** Free GLTalk to GLTalk calling, Multimedia Messaging, Video Chat, Voice Conferencing, Affordable international calling, Voicemail to email

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GLTalk $0.99 Credit | $0.99 | one-time |
| GLTalk $4.99 Credit | $4.99 | one-time |
| GLTalk $9.99 Credit | $9.99 | one-time |
| GLTalk $19.99 Credit | $19.99 | 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 GLTalk free?

GLTalk 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 GLTalk or Smart PDF Compressor have ads?

Neither GLTalk nor Smart PDF Compressor shows ads.

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

GLTalk ships an update every 2 months, and Smart PDF Compressor every 9 days. Most recently, GLTalk was updated on August 11, 2026 and Smart PDF Compressor on September 19, 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.*