# aContacts vs Instant Testing

The clearest difference is in-app purchases: Instant Testing at none against aContacts's 2. Instant Testing also leads on iOS requirement (14.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. aContacts sells 2 one-off in-app purchases. Instant Testing asks for nothing beyond the download.

aContacts ships an update every 5 weeks, Instant Testing every 2 months. The most recent releases landed on October 16, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | aContacts | Instant Testing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (45 ratings)](https://appshunter.io/ios/app/acontacts-contact-manager/id654432491/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 53.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 79 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [峥 俞](https://appshunter.io/developer/1500529302) | [Clapptron Technologies Private Limited](https://appshunter.io/developer/1446260957) |

## What reviewers say

### aContacts

[App page](https://appshunter.io/ios/app/acontacts-contact-manager/id654432491)

This app enhances your address book with powerful contact management tools. Organize contacts into groups, send mass emails and texts, and sync with Google. It also offers backup, restore, and duplicate merging features for a streamlined experience.

**Highlights:** Smart contact management, Group creation and management, Send group SMS & email, Google contacts sync, Contacts backup and restore, Merge duplicate contacts, T9 dialer with search

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Unlimited Version | $3.99 | one-time |

**What reviewers like**

- 👍 Easy to use and intuitive interface
- 🔄 Effective contact syncing with Gmail and Google contacts
- 📊 Excellent contact organization and grouping capabilities
- 🧹 Strong duplicate contact detection and merging features
- 📱 Works well across multiple devices

**What reviewers complain about**

- 🐛 Frequent crashes and stability issues
- 🔄 Forced contact syncing without opt-out option
- 📵 Non-functional buttons and UI elements
- ⚠️ Duplicate contact creation and merging problems
- 🔒 Landscape mode not supported on iPad

**Reported bugs**

- App crashes when moving contacts to groups
- Contacts disappear after iOS updates
- Duplicate contacts created (up to 203 times reported)
- All phone numbers merged into single contact
- Text messages freeze up

**Requested features**

- Option to disable automatic contact syncing
- LinkedIn sync capability
- Landscape mode support for iPad
- Quick search by typing first letter
- CC/BCC functionality for group messaging


### Instant Testing

[App page](https://appshunter.io/ios/app/instant-testing/id6587570917)

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

**In-app purchases:** none


## Frequently asked questions

### Is aContacts free?

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

### Is Instant Testing free?

Instant Testing is free to download, with no in-app purchases.

### Do aContacts or Instant Testing have ads?

Neither aContacts nor Instant Testing shows ads.

### Which is updated more often, aContacts or Instant Testing?

aContacts ships an update every 5 weeks, and Instant Testing every 2 months. Most recently, aContacts was updated on October 16, 2026 and Instant Testing on September 28, 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.*