Horizontal Shaft Alignment vs Contacts Backups
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Horizontal Shaft Alignment
This app assists with horizontal shaft alignment for machinery like motors and pumps. It guides users through the measurement and alignment process using Bluetooth-connected sensors, offering features like Feetlock for challenging situations and instant PDF reporting.
- Bluetooth sensor connectivity
- Guided measurement and alignment process
- Feetlock function for base-bound machines
- Instant PDF report generation
- ACOEM Cloud integration for reporting and sharing
- VertiZontal adjustment without re-measuring
Read full descriptionHide full description
This is a companion app for performing horizontal shaft alignment, using the RT 300/AT 200/AT 100, on typical applications such as a motor and a pump. The app guides the user throughout the complete measurement and alignment process when using the Bluetooth® connected ACOEM sensors. This offers an extensive shaft alignment package, including the Feetlock function that is useful in base/bolt-bound machine situations. The PDF Report function provides a fast on-site reporting capability by converting saved measurement reports into PDF files. Thanks to the ACOEM cloud instant reporting and instant sharing is easy. ---- Note: This app works only with the ACOEM RT-300 and AT-200 ---- Key Features: - Connected using Bluetooth® - GuideU: Our patented icon-based and color-coded adaptive user interface - VertiZontal™: adjust the machine both vertically and horizontally without re-measuring - Create an instant PDF-report - Connect to the ACOEM Cloud (optional) Visit the website www.acoem.com for more information on alignment in general, the ACOEM tools and support of the app.
Contacts Backups
Read full descriptionHide full description
Your contacts, protected and always under your control. Personal contacts are among the most valuable — and least protected — types of digital data. They are not just phone numbers or email addresses: they represent relationships, professional opportunities, personal connections, and years of important information stored in one place. Contacts Backup was created to provide a secure and reliable solution: control instead of dependence, transparency instead of opacity, and real protection without compromising privacy. MAIN FEATURES Controlled & Encrypted Backup • Voluntary and selective backups — only when you decide • End-to-end encryption for stored data • Restore your contacts anytime, with no lock-in Integrated Multi-Layer Security • Biometric authentication with Face ID and Touch ID • Protection against accidental deletion • Intelligent duplicate detection with full manual control Privacy & Full Control • You retain full ownership of your data • Fully functional offline when needed • No forced syncing, hidden processing, or data resale Native Experience on Apple Devices • Optimized for iPhone, iPad, and Mac • Clean and intuitive interface • Respectful integration with the Apple ecosystem WHO IT’S FOR • Professionals who rely on their contact network • Privacy-conscious users who value data ownership • Frequent travelers who change devices or SIM cards • Anyone who has lost contacts in the past and wants a reliable solution • Users who prefer transparent tools without ads or tracking PRODUCT PHILOSOPHY Contacts Backup is a protection tool — not a social network. It is designed to help you securely preserve and recover your contact data, while keeping you fully in control. We prioritize security, transparency, reliability, and privacy — with no compromises. Your contacts matter. Protect them with an app designed to truly respect them.
Screenshots
Verdict
The clearest difference is in-app purchases: Horizontal Shaft Alignment at none against Contacts Backups's 1. Horizontal Shaft Alignment also leads on iOS requirement (13.0 vs 17.6). Contacts Backups's advantage is update cadence (every 9 days vs every 4 months). 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. Contacts Backups sells 1 one-off in-app purchase. Horizontal Shaft Alignment asks for nothing beyond the download.
Horizontal Shaft Alignment ships an update every 4 months, Contacts Backups every 9 days. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.
| Parameter | Horizontal Shaft Alignment | Contacts Backups |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 123 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | ACOEM Group | Dywtal Digital |
In-app purchases
Horizontal Shaft Alignment
No in-app purchases
Contacts Backups
- Premium Contacts Backup$6.99
Questions
Is Horizontal Shaft Alignment free?
Is Contacts Backups free?
Do Horizontal Shaft Alignment or Contacts Backups have ads?
Which is updated more often, Horizontal Shaft Alignment or Contacts Backups?
Other comparisons















