# Time Calc vs Drift

The clearest difference is in-app purchases: Drift at none against Time Calc's 4. Drift also leads on update cadence (weekly vs monthly). Time Calc's advantage is ads (none vs shown) and device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. Time Calc sells 4 in-app purchases, starting at $2.99 per 7 days. Drift asks for nothing beyond the download.

Time Calc ships an update monthly, Drift weekly. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Time Calc | Drift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (235 ratings)](https://appshunter.io/ios/app/time-calc-time-calculator/id1279195300/reviews)** | — |
| Number of ratings | **235** | — |
| Positive reviews | 42.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | Freemium | — |
| Size | 10 MB | 11 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ottorino Bruni](https://appshunter.io/developer/360574946) | [Shih-Kung Chen](https://appshunter.io/developer/871339068) |

## 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


### Drift

[App page](https://appshunter.io/ios/app/drift-secrets-in-code/id6753609055)

**In-app purchases:** none


## Frequently asked questions

### Is Time Calc free?

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

### Is Drift free?

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

### Do Time Calc or Drift have ads?

Drift shows ads; Time Calc does not.

### Which is updated more often, Time Calc or Drift?

Time Calc ships an update monthly, and Drift weekly. Most recently, Time Calc was updated on November 3, 2026 and Drift on November 12, 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.*