# Chmod Calculator vs Photo Optimizer

The clearest difference is review sentiment: Photo Optimizer at 86% against Chmod Calculator's 0%. Photo Optimizer also leads on price (Free vs $0.99) and rating (4.9 vs 2.0). Chmod Calculator's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support there is nothing between them.

Photo Optimizer is free to download; Chmod Calculator costs $0.99 up front. Photo Optimizer sells 2 in-app purchases, starting at $2.99 per 7 days. Chmod Calculator asks for nothing beyond the download.

Photo Optimizer holds the better App Store score, 4.9 against 2.0. That said, the two scores are not equally well evidenced: Photo Optimizer has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Chmod Calculator's written reviews are positive against 86% of Photo Optimizer's.

Chmod Calculator ships an update every 33 months, Photo Optimizer every 6 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Chmod Calculator | Photo Optimizer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.0 (2 ratings)](https://appshunter.io/ios/app/chmod-calculator/id1073777582/reviews) | **[4.9 (11 ratings)](https://appshunter.io/ios/app/photo-optimizer-clean-storage/id6754819963/reviews)** |
| Number of ratings | 2 | **11** |
| Positive reviews | 0.0% of reviews | **85.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 33 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 47 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andre Yonadam](https://appshunter.io/developer/1006281613) | [Pin Traveler LLC](https://appshunter.io/developer/1569297359) |

## What reviewers say

### Chmod Calculator

[App page](https://appshunter.io/ios/app/chmod-calculator/id1073777582)

This utility app helps users easily calculate file permissions in both numerical and symbolic formats. It supports advanced permission bits like setuid, setgid, and Sticky.

**Highlights:** Numerical permission calculation, Symbolic permission calculation, setuid bit support, setgid bit support, Sticky bit support

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

**In-app purchases:** none


### Photo Optimizer

[App page](https://appshunter.io/ios/app/photo-optimizer-clean-storage/id6754819963)

Free up device storage by intelligently compressing photos and screenshots. This app shrinks image files significantly while preserving visual quality, allowing you to keep more memories without deleting them or relying on cloud storage.

**Highlights:** Intelligent image compression, Shrink photos up to 90%, Batch optimization, Preserves visual quality, On-device processing, Keeps originals untouched

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Annual | $19.99 | per year |


## Frequently asked questions

### Is Chmod Calculator free?

Chmod Calculator costs $0.99, with no in-app purchases.

### Is Photo Optimizer free?

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

### Which has better reviews, Chmod Calculator or Photo Optimizer?

Photo Optimizer is rated higher. Chmod Calculator averages 2.0 out of 5 from 2 ratings, while Photo Optimizer averages 4.9 from 11 ratings.

### Do Chmod Calculator or Photo Optimizer have ads?

Photo Optimizer shows ads; Chmod Calculator does not.

### Which is updated more often, Chmod Calculator or Photo Optimizer?

Chmod Calculator ships an update every 33 months, and Photo Optimizer every 6 weeks. Most recently, Chmod Calculator was updated on October 24, 2026 and Photo Optimizer on October 25, 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.*