# SiiAPP vs Convert Image To PDF tools

The clearest difference is rating: Convert Image To PDF tools at 4.5 against SiiAPP's 1.0. Convert Image To PDF tools also leads on ratings volume (2.6K vs 1) and review sentiment (31% vs 12%). SiiAPP's advantage is in-app purchases (none vs 3) and update cadence (fortnightly vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Convert Image To PDF tools sells 3 in-app purchases, starting at $1.99 per 7 days. SiiAPP asks for nothing beyond the download.

Convert Image To PDF tools holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Convert Image To PDF tools has 2.6K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 12% of SiiAPP's written reviews are positive against 31% of Convert Image To PDF tools's.

SiiAPP ships an update fortnightly, Convert Image To PDF tools every 6 weeks. The most recent releases landed on October 22, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SiiAPP | Convert Image To PDF tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/siiapp/id1488201798/reviews) | **[4.5 (2.6K ratings)](https://appshunter.io/ios/app/convert-image-to-pdf-tools/id1527885081/reviews)** |
| Number of ratings | 1 | **2.6K** |
| Positive reviews | 12.3% of reviews | **31.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | **Free** | Freemium |
| Size | 61 MB | 4 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Mendez Hernandez](https://appshunter.io/developer/1488201797) | [Abdullah Albalawi](https://appshunter.io/developer/1008309841) |

## What reviewers say

### SiiAPP

[App page](https://appshunter.io/ios/app/siiapp/id1488201798)

Easily access class schedules, teacher details, and professor reviews. View past academic cycles and customize your timetable. Offline access available for loaded information.

**Highlights:** Classroom and teacher lookup, Professor reviews and ratings, Customizable timetable design, Past academic cycle schedules, Offline access to data

**Features:** macOS Compatibility

**In-app purchases:** none


### Convert Image To PDF tools

[App page](https://appshunter.io/ios/app/convert-image-to-pdf-tools/id1527885081)

Easily convert images into high-quality PDFs with this offline tool. It offers unlimited conversions, file size display, and sharing options. Customize your PDFs with page numbering, borders, and renaming capabilities.

**Highlights:** Unlimited image to PDF conversion, Offline functionality, No ads, File size display, Share converted files, Page numbering, Add borders

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| weekly Subscription | $1.99 | per 7 days |
| monthly Subscription | $3.99 | per month |
| yearly Subscription | $17.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Fast conversion
- 💡 Useful for quick PDF creation

**What reviewers complain about**

- 🔒 Restricted functionality without payment
- 🐛 Poor image quality in PDF
- 🔋 App crashes and freezes
- 💸 Forced to pay for basic features

**Reported bugs**

- App crashes when trying to share or download PDF
- Subscription issues and unexpected charges
- Incompatibility with older devices

**Requested features**

- Allow free sharing and renaming of PDF files
- Improve image quality in PDF conversion
- Provide more free features without subscription


## Frequently asked questions

### Is SiiAPP free?

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

### Is Convert Image To PDF tools free?

Convert Image To PDF tools is free to download, with in-app purchases available.

### Which has better reviews, SiiAPP or Convert Image To PDF tools?

Convert Image To PDF tools is rated higher. SiiAPP averages 1.0 out of 5 from 1 ratings, while Convert Image To PDF tools averages 4.5 from 2.6K ratings.

### Do SiiAPP or Convert Image To PDF tools have ads?

Neither SiiAPP nor Convert Image To PDF tools shows ads.

### Which is updated more often, SiiAPP or Convert Image To PDF tools?

SiiAPP ships an update fortnightly, and Convert Image To PDF tools every 6 weeks. Most recently, SiiAPP was updated on October 22, 2026 and Convert Image To PDF tools 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.*