chmod vs StopCopy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
chmod
This app helps you understand and master the 'chmod' command by easily deciphering octal values. Choose to click individual bits or select octal values to learn file permissions.
- Decipher octal values
- Learn file permissions
- User-friendly interface
- Click individual bits
- Select octal values
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Ever been curios about what those numbers means in a chmod command? Well, wonder no more! Learn and master the art of chmod-fu. With chmod-fu's super easy to use user-interface you can decipher those octal values in a blink of an eye. You choose if you want to click on individual bits, such as read, write, execute, or pick an octal value, both are available to suite your preference.
StopCopy
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StopCopy helps you protect your personal data in your clipboard. Some applications, when you open them, paste your clipboard data, you can see that because there is a warning appearing when that happens on the top of your screen stating: [offending app] pasted from [other app]. We don't know why some apps collect your clipboard personal and private data, but we can assume that it can be misused for targeted advertising amongst others. When you open CopyStop, it paste random useless text to your clipboard, so that afterwards you can safely open the app that always tries to "steal" your personal data. Just starting the app is enough. You can select some default warning texts or funny text to be copied to the offending applications. It's most useful when it is quickly available, for example placing it in your springboard.
Screenshots
Verdict
The clearest difference is in-app purchases: chmod at none against StopCopy's 1. chmod also leads on update cadence (every 5 months vs every 33 months) and iOS requirement (8.2 vs 14.4). On price, ads and 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
Both are free to download. StopCopy sells 1 one-off in-app purchase. chmod asks for nothing beyond the download.
chmod ships an update every 5 months, StopCopy every 33 months. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.
| Parameter | chmod | StopCopy |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 months — better | Every 33 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.2 — better | 14.4 |
| Further details — not scored | ||
| Size | 10 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Red Shark AB | Robin Bollen |
In-app purchases
chmod
No in-app purchases
StopCopy
- Tip jar$0.99









