SpeedUp Player Pro + vs Strongbox Zero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SpeedUp Player Pro +
Adjust audio playback speed from 0.5X to 2.5X for podcasts and audiobooks. Features include study mode with A/B repeat, a sleep timer, and customizable gestures. Preserve pitch while changing speed and play directly from your iPod collection or app's documents folder.
- Variable speed playback (0.5X - 2.5X)
- Preserve pitch while changing speed
- Study mode with A/B repeat
- Sleep timer
- Customizable gestures
- CarPlay support
- Bookmark with comments
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Listen to your iPod collections at 0.5X - 2.5X speed. Supports multitasking, remote controller. Study mode(A/B repeat, quick rewind/forward), sleep timer. * Save time listening to podcasts and audiobooks. Play at any speed using a slider! * Study mode helps you learn more effectively. * Sleep timer can save your battery while you sleep. SpeedUp Player features: - Variable speed playback: 0.5X(half speed) - 2.5X (0.1X interval) - Preserve pitch(tone) while changing playback speed. - Play directly from your iPod collection. - Play from app's Documents folder. (Wi-Fi file transfer is possible) - Customizable gestures to access most features. - Configurable quick rewind/forward buttons. 4 buttons can be set individually. - Full multitasking support. - Remote controller support. - Sleep timer (pause after 10/20/30/60/120 minutes) - A/B repeat : repeat interval using simple button press - bookmark: save bookmarks with comments. A/B repeat section can be bookmarked. - reads chapter information. - Extremely fast iPod library browsing (disk+memory based cache) - Browse by album/artist/songs/playlists/podcasts - Simple playlist - Pause/resume on phone call(audio interruption). - Pause when headphone is unplugged. - Music tracks can be set to be played at 1X. - UI supports light/dark theme. - supports CarPlay. - supports lyrics (ID3 USLT/SYLT and lrc) Limitations: - video tracks are not supported. - does not support DRM protected files.
Strongbox Zero
This app securely stores and protects your passwords with a master password. It supports open-source formats and offers advanced security features like biometric unlock and hardware token protection. It's designed for users who prefer a local-only password management solution.
- Local-only password storage
- Biometric and PIN unlock
- YubiKey hardware token protection
- Military-grade cryptography
- Password auditing for weak passwords
- Secure document attachment viewer
- Import/Export via Files app and Email
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Strongbox Zero is a version of the well known and loved Strongbox with all of the networking code and as many third party libraries stripped out as we could! Think of it as the Drag Racer version of Strongbox! If you're a fan of Local Only password managers this could be the right choice for you. We recommend you get to know (and love!) the regular Strongbox first through the Freemium app. Once you're happy and sure you want to go local only, go for Strongbox Zero... Strongbox Zero is an application for keeping all your passwords safely stored and protected by one master password. Supporting the open source Password Safe and KeePass formats. *** Features *** - Face ID/Touch ID Unlock for the ultimate in convenience, security and speed. - PIN Code Unlock with a Duress PIN option for those tricky situations. - YubiKey protection - secure your databases with a hardware token. - Secure - protected by time tested military grade cryptography. - Private - Isolated In-App attachments viewer for your sensitive documents, photos & videos. - Audit your passwords - Automatically check your database for weak passwords - Search your entire set of passwords and secrets instantly and powerfully, with deep search. Autocomplete new entries, and auto generate secure passwords. - Compatible - Import/Export by Files app, Email, CSV, iTunes File Sharing - Standards compliant - using the time tested Password Safe and KeePass formats so you can import any existing password safe you have. - Features galore - Incredibly configurable password generation including Diceware (XKCD) & regular passwords. - Timed Auto Clear Clipboard. - Entry History. - KeePass Field References, Tags & Custom Icons. - Two Factor Authentication codes (TOTP) - QR Code, Steam & Manual. --------------------------------------------------------------------- • Payment will be charged to iTunes Account at confirmation of purchase • Strongbox Privacy Policy may be found here: https://strongboxsafe.com/privacy-policy/ • Strongbox Terms of Use may be found here: https://strongboxsafe.com/terms/
Screenshots
Verdict
The clearest difference is price: SpeedUp Player Pro + at $2.99 against Strongbox Zero's $99.99. SpeedUp Player Pro + also leads on rating (4.6 vs 4.3) and ratings volume (185 vs 21). Strongbox Zero's advantage is update cadence (every 2 weeks vs every 2 months) and review sentiment (75% vs 66%). On ads, in-app purchases and monetization model 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
SpeedUp Player Pro + costs $2.99 and Strongbox Zero $99.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SpeedUp Player Pro + holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: SpeedUp Player Pro + has 185 ratings behind it against 21, so its average is the more settled of the two. Written reviews complicate that: 66% of SpeedUp Player Pro +'s written reviews are positive against 75% of Strongbox Zero's, so the app with the better star average is not the one people write more warmly about.
SpeedUp Player Pro + ships an update every 2 months, Strongbox Zero every 2 weeks. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.
| Parameter | SpeedUp Player Pro + | Strongbox Zero |
|---|---|---|
| Price | $2.99 — better | $99.99 |
| Rating | 4.6 (185 ratings) — better | 4.3 (21 ratings) |
| Positive reviews | 66.2% of reviews | 75.0% of reviews — better |
| Number of ratings | 185 — better | 21 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac, Apple Watch — better |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 20 MB | 96 MB |
| Age rating | 4+ | 4+ |
| Developer | Tachyon Factory Inc. | Phoebe Code Limited |
Customer experience
SpeedUp Player Pro +
Strongbox Zero
Bugs and requests
SpeedUp Player Pro +
Reported bugs
27 issues- AB repeat does not function properly
- App resets to the beginning of tracks when stopped
- Settings changes do not save
- App only works while open
- Wi-Fi file transfer not working
Show 22 moreShow fewer
- Cannot import or listen to audio files
- Help section is blank
- Horizontal mode not supported on iPad
- Seek function broken in study mode
- No easy way to scroll slowly
- App loses audio focus
- Playback speed control not intuitive
- Songs skip randomly
- Playback button lags
- Section repeat resets to beginning
- Playlist speed not consistent
- App glitches/crashes
- Sound quality decline
- Audio playback conflicts
- Playlist ordering issues
- AB repeat malfunctions
- Section repeat auto-off
- Lyrics disappear
- Icon display error on iPad
- Cannot connect to iCloud
- Videos not supported
- App forces repurchase due to rebranding
Requested features
72 requests- Allow micro-adjustments for AB repeat
- Android version release
- iPad version release
- Apple Watch version
- More precise audio speed options (hundredths/thousandths)
Show 67 moreShow fewer
- Ability to control speed for entire playlists
- Detailed description of settings options
- 75% speed option
- Key transpose feature
- Japanese language interface
- Auto lyrics input or copy-paste
- iPad horizontal mode support
- Fix iPad icon display error
- Make app safer to import/export bookmarks/notes
- Update interface with new colors/graphics
- Ability to scroll slowly and gently through a book
- Fix bug where app loses audio focus
- Fix bug where AB repeat resets to beginning
- Fix bug where playback resets to beginning
- Fix bug where settings changes are not saved
- Fix bug where Wi-Fi file transfer is not working
- Fix bug where songs skip randomly
- Fix bug where playback button lags
- Fix bug where section repeat issues occur
- Fix bug where playlist speed is not consistent
- Fix bug where app glitches/crashes
- Fix bug where app only works when open
- Fix bug where sound quality declines
- Fix bug where audio playback conflicts occur
- Fix bug where playlist ordering is incorrect
- Fix bug where AB repeat malfunctions
- Fix bug where controls are not intuitive
- Fix bug where section repeat auto-off occurs
- Fix bug where lyrics disappear
- Fix bug where seek function is broken
- Fix bug where gesture controls are frustrating
- Fix bug where iCloud connection fails
- Fix bug where videos are not supported
- Fix bug where app resets to beginning of tracks
- Fix bug where section repeat is not working
- Fix bug where playback stops suddenly
- Fix bug where slow playback stops suddenly
- Fix bug where horizontal mode is not supported on iPad
- Fix bug where icon display error on iPad
- Fix bug where app only works when open
- Fix bug where Wi-Fi file transfer is not working
- Fix bug where AB repeat resets to beginning
- Fix bug where playback resets to beginning
- Fix bug where settings changes are not saved
- Fix bug where songs skip randomly
- Fix bug where playback button lags
- Fix bug where section repeat issues occur
- Fix bug where playlist speed is not consistent
- Fix bug where app glitches/crashes
- Fix bug where app only works when open
- Fix bug where sound quality declines
- Fix bug where audio playback conflicts occur
- Fix bug where playlist ordering is incorrect
- Fix bug where AB repeat malfunctions
- Fix bug where controls are not intuitive
- Fix bug where section repeat auto-off occurs
- Fix bug where lyrics disappear
- Fix bug where seek function is broken
- Fix bug where gesture controls are frustrating
- Fix bug where iCloud connection fails
- Fix bug where videos are not supported
- Fix bug where app resets to beginning of tracks
- Fix bug where section repeat is not working
- Fix bug where playback stops suddenly
- Fix bug where slow playback stops suddenly
- Fix bug where horizontal mode is not supported on iPad
- Fix bug where icon display error on iPad
Strongbox Zero
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SpeedUp Player Pro +
No in-app purchases
Strongbox Zero
No in-app purchases
Questions
Is SpeedUp Player Pro + free?
Is Strongbox Zero free?
Which has better reviews, SpeedUp Player Pro + or Strongbox Zero?
Do SpeedUp Player Pro + or Strongbox Zero have ads?
Which is updated more often, SpeedUp Player Pro + or Strongbox Zero?
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