# Time Calculator Premium vs Manual Sync

The clearest difference is price: Manual Sync at Free against Time Calculator Premium's $3.99. Manual Sync also leads on update cadence (every 2 days vs every 6 months) and rating (5.0 vs 4.6). Time Calculator Premium's advantage is in-app purchases (none vs 2) and ratings volume (9 vs 1). On ads there is nothing between them.

Manual Sync is free to download; Time Calculator Premium costs $3.99 up front. Manual Sync sells 2 in-app purchases, starting at $9.99 per year. Time Calculator Premium asks for nothing beyond the download.

Manual Sync holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Time Calculator Premium has 9 ratings behind it against 1, so its average is the more settled of the two.

Time Calculator Premium ships an update every 6 months, Manual Sync every 2 days. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Time Calculator Premium | Manual Sync |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.6 (9 ratings)](https://appshunter.io/ios/app/time-calculator-premium/id1048440277/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/manual-sync/id6763876582/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 68.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 5 MB | 2 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Adrien Brecheteau](https://appshunter.io/developer/956859837) | [AeroSync Studio](https://appshunter.io/developer/1888070954) |

## What reviewers say

### Time Calculator Premium

[App page](https://appshunter.io/ios/app/time-calculator-premium/id1048440277)

Easily add and subtract hours and minutes without complex conversions. This app remembers your calculations and allows for large hour amounts, plus decimal conversion. The premium version offers multiplication and division of time values.

**Highlights:** Add and subtract hours/minutes, Decimal time conversion, Save calculations, Multiply/divide time values, Ad-free experience

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

**In-app purchases:** none


### Manual Sync

[App page](https://appshunter.io/ios/app/manual-sync/id6763876582)

Easily transfer annotations and bookmarks between PDF documents. This tool uses precise matching for professionals who update manuals frequently, ensuring notes stay in place. All processing is done locally for enhanced privacy.

**Highlights:** Smart word-based annotation matching, Bookmark hierarchy migration, Split-view manual review, Local device processing, Annual and lifetime subscription options

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ManualSync Annual Premium | $9.99 | per year |
| ManualSync Annual Premium | $24.99 | one-time |


## Frequently asked questions

### Is Time Calculator Premium free?

Time Calculator Premium costs $3.99, with no in-app purchases.

### Is Manual Sync free?

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

### Which has better reviews, Time Calculator Premium or Manual Sync?

Manual Sync is rated higher. Time Calculator Premium averages 4.6 out of 5 from 9 ratings, while Manual Sync averages 5.0 from 1 ratings.

### Do Time Calculator Premium or Manual Sync have ads?

Neither Time Calculator Premium nor Manual Sync shows ads.

### Which is updated more often, Time Calculator Premium or Manual Sync?

Time Calculator Premium ships an update every 6 months, and Manual Sync every 2 days. Most recently, Time Calculator Premium was updated on October 17, 2026 and Manual Sync on October 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.*