iDOS 3 vs Secure Zip & Unzip
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iDOS 3
Experience classic DOS games and applications on your iPhone and iPad. This app emulates a DOS PC, offering modern controls for enhanced playability. It also supports productivity tasks like word processing and programming.
- On-screen keyboard with custom layouts
- Virtual gamepad with customizable bindings
- Trackpad mouse emulation
- MT-32 emulation and MIDI support
- Bluetooth keyboard and gamepad support
- Bluetooth mouse support
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Play classic DOS games on your iPhone and iPad! iDOS turns your device right into a powerful DOS gaming PC, with modern game control to make your old favorites as playable as possible. You can also use iDOS for non-gaming purposes, such as word processing, casual programming. Apps in the DOS days are often simpler and surprisingly productive. KEYBOARD iDOS provides a PC compatible on-screen keyboard with carefully designed layouts for different devices and orientations. The keyboard has a sliding control in landscape mode so that you can keep it from covering critical part of the screen. Bluetooth keyboard is fully supported on iOS 14+. GAMEPAD iDOS provides a virtual gamepad with key bindings that are fairly common in DOS games. You can customize the bindings. The DPAD works in 8-axis way. It can also be toggled into a joystick. External bluetooth game controllers are supported. Make sure your game controller is connected (System Settings->Bluetooth). To customize button bindings, go to iDOS in landscape mode, tap on bluetooth icon on the auto-hiding top bar. MOUSE The screen area serves as a trackpad for moving mouse pointer. Tap on the screen for left click. If direct touch is enabled, the mouse pointer will move to where you tap. Hold one finger on the screen, and tap with another finger for right click. On-screen mouse buttons are also provided for your convenience. Bluetooth mouse are fully supported on iOS 14+. AUDIO iDOS supports mt32 emulation, MIDI sound fonts, cuesheet based CDimage with compressed audio tracks (ogg/mp3/flac). SUPPORT - Visit https://litchie.com/dospad for more information - Send email to idos@litchie.com - Follow the developer on Twitter: https://twitter.com/litchiedev - iDOS is open source, report issue on https://github.com/litchie/dospad
Secure Zip & Unzip
Create and open password-protected ZIP archives with strong AES-256 encryption. This utility encrypts and decrypts files entirely on your device, ensuring your data remains private and accessible across various platforms. Seamlessly integrate with other apps to protect files before sharing.
- AES-256 encryption
- Password protection for ZIP archives
- On-device encryption and decryption
- Cross-platform compatibility
- Integration with other apps
- Native iOS and iPadOS design
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Secure Zip & Unzip creates password-protected ZIP archives with real AES-256 encryption, the same standard used by 7-Zip, WinZip and WinRAR. iPhone and iPad can zip and unzip files. Neither can put a password on one. That's the gap this app fills. EVERYTHING STAYS ON YOUR DEVICE No account. No sign-up. No uploads. Your files are encrypted and decrypted entirely on your device. The app never connects to the internet. REAL ENCRYPTION, NOT THE OLD KIND AES-256 in the WinZip AES standard, not the weak legacy ZIP 2.0 password scheme that many apps still use. OPENS ANYWHERE Your archives work with the Files app, macOS Finder, Windows, 7-Zip, WinRAR, WinZip and The Unarchiver, with no special software needed on the other end. ENCRYPT FROM ANY APP Share files from Mail, Photos, Files or anywhere else and protect them without leaving the app you're in. Share a protected ZIP back and it opens straight at the password prompt. BUILT FOR iPHONE AND iPAD A native design that follows the system, with a two-column layout and full windowing on iPad. Browse your archives with real thumbnails and Quick Look preview, import straight from your photo library, and drag and drop files from anywhere. DESKTOP-CLASS ON iPHONE DUO Open it and you get a desktop-class app with everything on one screen. Close it and you get the iPhone app you know, made for life on the go. ALSO ON MAC The Mac version adds right-click support in Finder, so you can protect or open an archive without opening the app at all. Privacy Policy: https://doverix.com/secure-zip-privacy/ Terms of Service: https://doverix.com/secure-zip-terms/
Screenshots
Verdict
The clearest difference is price: iDOS 3 at $4.99 against Secure Zip & Unzip's $12.99. iDOS 3 also leads on chart position (#114 vs unranked) and update cadence (every 6 weeks vs every 3 months). Secure Zip & Unzip's advantage is review sentiment (100% vs 70%). On ads, in-app purchases 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
iDOS 3 costs $4.99 and Secure Zip & Unzip $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iDOS 3 ships an update every 6 weeks, Secure Zip & Unzip every 3 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | iDOS 3 | Secure Zip & Unzip |
|---|---|---|
| Price | $4.99 — better | $12.99 |
| Rating | 4.3 (52 ratings) — better | — |
| Positive reviews | 69.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 52 — better | — |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | #114 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 8 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | 潮激 李 | ALPER KAPLAN |
Customer experience
iDOS 3
Secure Zip & Unzip
In-app purchases
iDOS 3
No in-app purchases
Secure Zip & Unzip
No in-app purchases









