# Time Calc vs Contact Groups

The clearest difference is price: Time Calc at Free against Contact Groups's $0.99. Time Calc also leads on rating (4.5 vs 3.5) and ratings volume (235 vs 2). Contact Groups's advantage is in-app purchases (none vs 4) and iOS requirement (12.0 vs 18.0). On review sentiment, update cadence, ads and device support there is nothing between them.

Time Calc is free to download; Contact Groups costs $0.99 up front. Time Calc sells 4 in-app purchases, starting at $2.99 per 7 days. Contact Groups asks for nothing beyond the download.

Time Calc holds the better App Store score, 4.5 against 3.5. That said, the two scores are not equally well evidenced: Time Calc has 235 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 42% of Time Calc's written reviews are positive against 40% of Contact Groups's.

Time Calc ships an update monthly, Contact Groups fortnightly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Time Calc | Contact Groups |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.5 (235 ratings)](https://appshunter.io/ios/app/time-calc-time-calculator/id1279195300/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/contact-groups/id1508450444/reviews) |
| Number of ratings | **235** | 2 |
| Positive reviews | **42.4% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | **Freemium** | Paid |
| Size | 10 MB | 1 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ottorino Bruni](https://appshunter.io/developer/360574946) | [Godfrey Raftesath](https://appshunter.io/developer/434548051) |

## What reviewers say

### Time Calc

[App page](https://appshunter.io/ios/app/time-calc-time-calculator/id1279195300)

Easily add, subtract, and compare times with this intuitive calculator. Perfect for logging hours, tracking shifts, or planning projects, it handles hours, minutes, and seconds with precision. Convert results and sync across devices.

**Highlights:** Add, subtract, multiply, divide time, Calculate time differences, Add/subtract time from dates, Convert results to various units, Convert between decimal and HH:MM:SS, Save and share calculations, iCloud sync

**Features:** iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $2.99 | per 7 days |
| 1 Month | $4.99 | per month |
| 1 Year | $11.99 | per year |
| Forever | $29.99 | one-time |

**What reviewers like**

- 👍 Visual calculation aid
- 👍 Helpful for pilots
- 👍 Simple and fast
- 👍 Good for schoolwork
- 👍 Easy to use

**What reviewers complain about**

-  anúncios Pop-up ads
- 💰 Subscription required for basic functions
- 💸 Unreasonable cost for basic features
- 🚫 Free version is very limited
- 👎 No restore purchase option

**Reported bugs**

- Purchase not restoring after device change
- Cannot restore previous purchase
- Pop-up ads are irritating
- Free version doesn't work
- Purchase not restoring

**Requested features**

- Ad-free version option
- Option to negate inputting seconds
- Improve restore purchase functionality
- Fix night mode functionality
- Fix display of numbers before action


### Contact Groups

[App page](https://appshunter.io/ios/app/contact-groups/id1508450444)

Easily create and manage contact groups directly on your device. Organize frequently contacted people for quick access, send group emails, or text multiple recipients at once. Export contacts as VCards for backup or sharing.

**Highlights:** Create and manage contact groups, Directly edit Apple Contacts database, Send group emails, Send group SMS/text messages, Export contacts as VCard, Delete multiple contacts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Time Calc free?

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

### Is Contact Groups free?

Contact Groups costs $0.99, with no in-app purchases.

### Which has better reviews, Time Calc or Contact Groups?

Time Calc is rated higher. Time Calc averages 4.5 out of 5 from 235 ratings, while Contact Groups averages 3.5 from 2 ratings.

### Do Time Calc or Contact Groups have ads?

Neither Time Calc nor Contact Groups shows ads.

### Which is updated more often, Time Calc or Contact Groups?

Time Calc ships an update monthly, and Contact Groups fortnightly. Most recently, Time Calc was updated on November 3, 2026 and Contact Groups on November 3, 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.*