# Contacts Sync Pro vs PiSquared

The clearest difference is price: PiSquared at $1.99 against Contacts Sync Pro's $9.99. PiSquared also leads on in-app purchases (none vs 4) and chart position (#183 vs unranked). Contacts Sync Pro's advantage is update cadence (every 3 months vs every 23 months). On ads and device support there is nothing between them.

Contacts Sync Pro costs $9.99 and PiSquared $1.99 up front. Contacts Sync Pro sells 4 one-off in-app purchases. PiSquared asks for nothing beyond the download.

Contacts Sync Pro ships an update every 3 months, PiSquared every 23 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Contacts Sync Pro | PiSquared |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | **[4.7 (812 ratings)](https://appshunter.io/ios/app/contacts-sync-pro/id686378579/reviews)** | — |
| Number of ratings | **812** | — |
| Positive reviews | 87.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 23 months |
| Monetization | Free with in-app purchases | — |
| Best chart rank | — | **#183** |
| Size | 42 MB | 3 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Playa Apps](https://appshunter.io/developer/449814913) | [Hartwig Wiesmann](https://appshunter.io/developer/1658877258) |

## What reviewers say

### Contacts Sync Pro

[App page](https://appshunter.io/ios/app/contacts-sync-pro/id686378579)

Effortlessly synchronize your contacts across Google, iCloud, and Outlook. This reliable app ensures your contact information is up-to-date on your iPhone, supporting two-way syncing and preserving all contact details and groups.

**Highlights:** Sync Google, iCloud, and Outlook contacts, Two-way and one-way sync options, Syncs all contact fields and photos, Preserves Google labels and Outlook categories, Automatic background syncing, Duplicate contact elimination, Confirm changes before syncing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Syncs | Free | one-time |
| Automatic Contact Syncing | Free | one-time |
| Make Contribution | $4.99 | one-time |
| Make Larger Contribution | $9.99 | one-time |

**What reviewers like**

- 🚀 Works flawlessly
- 👍 Easy to use
- 🚀 Reliable and accurate
- 🚀 Keeps contacts in sync
- 👍 Excellent responsiveness from developer

**What reviewers complain about**

- 🐛 UX has subtly changed for the worse
- 🐛 Confusing to use for just syncing one contact
- 🐛 Doesn't sync Gmail groups

**Reported bugs**

- Caused massive increase in number of contacts
- Eliminated all existing contacts

**Requested features**

- Improved handling of duplicate contacts
- Better side-by-side comparison of contacts


### PiSquared

[App page](https://appshunter.io/ios/app/pisquared/id1615268645)

**Currently charting:** #183 Top Paid · Productivity (US App Store)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Contacts Sync Pro free?

Contacts Sync Pro costs $9.99, and also offers in-app purchases.

### Is PiSquared free?

PiSquared costs $1.99, with no in-app purchases.

### Do Contacts Sync Pro or PiSquared have ads?

Neither Contacts Sync Pro nor PiSquared shows ads.

### Which is updated more often, Contacts Sync Pro or PiSquared?

Contacts Sync Pro ships an update every 3 months, and PiSquared every 23 months. Most recently, Contacts Sync Pro was updated on October 29, 2026 and PiSquared on October 30, 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.*