# Global Time Machine vs Contact Backup

The clearest difference is rating: Contact Backup at 5.0 against Global Time Machine's 3.7. Contact Backup also leads on monetization model (free vs free with in-app purchases) and iOS requirement (10.0 vs 17.0). Global Time Machine's advantage is update cadence (every 5 days vs every 2 weeks) and ratings volume (7 vs 1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Global Time Machine sells 2 in-app purchases, starting at $0.99 per month and Contact Backup sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Contact Backup holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Global Time Machine has 7 ratings behind it against 1, so its average is the more settled of the two.

Global Time Machine ships an update every 5 days, Contact Backup every 2 weeks. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Global Time Machine | Contact Backup |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (7 ratings)](https://appshunter.io/ios/app/global-time-machine/id1082674619/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/contact-backup-restore/id1446837493/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 27 MB |
| Requires iOS | 17.0 | **10.0** |
| Devices | iPhone, Mac, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [theMakeApp](https://appshunter.io/developer/1014975385) | [sandip paghadar](https://appshunter.io/developer/1407622721) |

## What reviewers say

### Global Time Machine

[App page](https://appshunter.io/ios/app/global-time-machine/id1082674619)

Visualize all your important time zones on a single, interactive line. Plan meetings and calls across different regions with ease, and see day and night cycles at a glance. Includes calendar integration and automatic location detection.

**Highlights:** World clock for 34,000+ cities, Drag to travel in time, Day and night at a glance, Calendar integration, Automatic location detection, Offline functionality

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium · Monthly | $0.99 | per month |
| Premium · Yearly | $9.99 | per year |


### Contact Backup

[App page](https://appshunter.io/ios/app/contact-backup-restore/id1446837493)

Easily back up and restore all your phone contacts without synchronization. Save contacts as VCF files via email or cloud services. Offers local and iCloud backup options with regular backup reminders for peace of mind.

**Highlights:** Backup contacts as VCF, Local and iCloud backup, Offline backup generation, Easy restore from VCF, Regular backup reminders, Secure contact storage

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ads Free version | $1.99 | one-time |


## Frequently asked questions

### Is Global Time Machine free?

Global Time Machine is free to download, with in-app purchases available.

### Is Contact Backup free?

Contact Backup is free to download, with in-app purchases available.

### Which has better reviews, Global Time Machine or Contact Backup?

Contact Backup is rated higher. Global Time Machine averages 3.7 out of 5 from 7 ratings, while Contact Backup averages 5.0 from 1 ratings.

### Do Global Time Machine or Contact Backup have ads?

Neither Global Time Machine nor Contact Backup shows ads.

### Which is updated more often, Global Time Machine or Contact Backup?

Global Time Machine ships an update every 5 days, and Contact Backup every 2 weeks. Most recently, Global Time Machine was updated on November 6, 2026 and Contact Backup on November 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*