# APMS vs Time Duration Calc

The clearest difference is update cadence: Time Duration Calc at every 3 weeks against APMS's every 15 months. APMS's advantage is iOS requirement (10.2 vs 15). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

APMS ships an update every 15 months, Time Duration Calc every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | APMS | Time Duration Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 weeks** |
| Size | 14 MB | 42 MB |
| Requires iOS | **10.2** | 15 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KONGtech Co. Ltd](https://appshunter.io/developer/1178419262) | [WebbyGenius Infotech Private Limited](https://appshunter.io/developer/1718922727) |

## What reviewers say

### APMS

[App page](https://appshunter.io/ios/app/apms/id1247353229)

**Features:** macOS Compatibility

**In-app purchases:** none


### Time Duration Calc

[App page](https://appshunter.io/ios/app/time-duration-calc-age-calc/id6748015355)

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

**In-app purchases:** none


## Frequently asked questions

### Is APMS free?

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

### Is Time Duration Calc free?

Time Duration Calc is free to download, with no in-app purchases.

### Do APMS or Time Duration Calc have ads?

Neither APMS nor Time Duration Calc shows ads.

### Which is updated more often, APMS or Time Duration Calc?

APMS ships an update every 15 months, and Time Duration Calc every 3 weeks. Most recently, APMS was updated on October 26, 2026 and Time Duration Calc on October 24, 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.*