Chmod Calculator vs Photo Optimizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chmod Calculator
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.
- Numerical permission calculation
- Symbolic permission calculation
- setuid bit support
- setgid bit support
- Sticky bit support
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Easily calculate permissions in the numerical and symbolic formats. You can even calculate permissions for bits setuid, setgid, and Sticky.
Photo Optimizer
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.
- Intelligent image compression
- Shrink photos up to 90%
- Batch optimization
- Preserves visual quality
- On-device processing
- Keeps originals untouched
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Too many photos eating up your storage? You’re not alone. Modern phones take incredible pictures… and shockingly huge files. Screenshots are ~2–3 MB each, everyday photos can be 5–20 MB, and before you know it, your device is “Storage Almost Full” — again. But deleting memories or banishing them to the cloud isn’t the solution. Photo Optimizer is. Photo Optimizer intelligently compresses your images while keeping them looking great. It’s not magic — it’s smart compression. Most images contain way more detail than your eyes — or your screen — can display. Why waste precious space storing invisible pixels? With Photo Optimizer, you can shrink photos to a fraction of their original size — often up to 90% smaller — while keeping them indistinguishable to the naked eye. Your screenshots, receipts, memes, chat exports, or repetitive shots don’t need ultra-high fidelity. You still get the image — just without the bloat. Perfect for: • Users running out of storage • People who don’t want to delete photos • Travelers taking thousands of pictures • Screenshot hoarders and photo collectors • Anyone who wants a lighter, faster photo library How it works: Just pick your images or albums, choose your quality preference, and Photo Optimizer safely compresses copies — leaving originals untouched unless you choose otherwise. You stay in control. Why Photo Optimizer? • Smart compression tailored for modern screens • Visually identical results for most photos • Batch optimize entire libraries • Free up GBs instantly • Keep photos local — no cloud dependency • Preserve privacy: everything happens on-device Some photos deserve every pixel of detail. Others — like screenshots of your email, tickets, PDFs, notes, or random memes — are just fine at one-tenth the size. Photo Optimizer helps you make that difference — effortlessly. Take back your storage. Keep your photos. Get Photo Optimizer and optimize smarter — not smaller. Please refer to Apple's end user license agreement for any questions about memberships and subscriptions https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Chmod Calculator | Photo Optimizer |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 2.0 (2 ratings) | 4.9 (11 ratings) — better |
| Positive reviews | 0.0% of reviews | 85.7% of reviews — better |
| Number of ratings | 2 | 11 — better |
| Update frequency | Every 33 months | Every 6 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 1 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Andre Yonadam | Pin Traveler LLC |
Customer experience
Chmod Calculator
Photo Optimizer
In-app purchases
Chmod Calculator
No in-app purchases
Photo Optimizer
- Weekly$2.997 Days
- Annual$19.991 Year
Questions
Is Chmod Calculator free?
Is Photo Optimizer free?
Which has better reviews, Chmod Calculator or Photo Optimizer?
Do Chmod Calculator or Photo Optimizer have ads?
Which is updated more often, Chmod Calculator or Photo Optimizer?
Other comparisons
