# SMS Instant vs Image PDF Converter

The clearest difference is rating: Image PDF Converter at 5.0 against SMS Instant's 4.1. Image PDF Converter also leads on in-app purchases (none vs 2) and ads (none vs shown). SMS Instant's advantage is ratings volume (62 vs 1) and iOS requirement (12.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. SMS Instant sells 2 in-app purchases, starting at $1.99 per month. Image PDF Converter asks for nothing beyond the download.

Image PDF Converter holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: SMS Instant has 62 ratings behind it against 1, so its average is the more settled of the two.

SMS Instant ships an update every 5 months, Image PDF Converter every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SMS Instant | Image PDF Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (62 ratings)](https://appshunter.io/ios/app/sms-instant/id1504179579/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/image-pdf-converter/id6752516065/reviews)** |
| Number of ratings | **62** | 1 |
| Positive reviews | 11.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 68 MB | 43 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hayato Shimizu](https://appshunter.io/developer/1207195348) | [zzari](https://appshunter.io/developer/1839643671) |

## What reviewers say

### SMS Instant

[App page](https://appshunter.io/ios/app/sms-instant/id1504179579)

Receive SMS messages anonymously with temporary phone numbers. Protect your private number by using disposable digits for service registrations and urgent SMS needs. Get a new number each time you open the app.

**Highlights:** Disposable phone numbers, Receive registration messages, Anonymous SMS reception, No registration required, Secure private number protection, New number on each launch

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly plan) | $1.99 | per month |
| Premium (Buying out) | $19.99 | one-time |


### Image PDF Converter

[App page](https://appshunter.io/ios/app/image-pdf-converter/id6752516065)

Easily convert images between various formats, including HEIC from iPhones. Offers real-time previews, a built-in viewer, and seamless sharing. Optimized for speed and memory efficiency.

**Highlights:** Supports 7+ image formats, HEIC to JPG/PNG conversion, Real-time preview, In-app image viewer, Direct file sharing, Organized image gallery

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

**In-app purchases:** none


## Frequently asked questions

### Is SMS Instant free?

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

### Is Image PDF Converter free?

Image PDF Converter is free to download, with no in-app purchases.

### Which has better reviews, SMS Instant or Image PDF Converter?

Image PDF Converter is rated higher. SMS Instant averages 4.1 out of 5 from 62 ratings, while Image PDF Converter averages 5.0 from 1 ratings.

### Do SMS Instant or Image PDF Converter have ads?

SMS Instant shows ads; Image PDF Converter does not.

### Which is updated more often, SMS Instant or Image PDF Converter?

SMS Instant ships an update every 5 months, and Image PDF Converter every 3 weeks. Most recently, SMS Instant was updated on November 3, 2026 and Image PDF Converter 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.*