# CPOD Calculator vs Twilight Time

The clearest difference is ads: CPOD Calculator at none against Twilight Time's shown. CPOD Calculator also leads on iOS requirement (10.0 vs 16.7.10). Twilight Time's advantage is update cadence (every 2 weeks vs every 4 months). On price, 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.

CPOD Calculator ships an update every 4 months, Twilight Time every 2 weeks. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CPOD Calculator | Twilight Time |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 15 MB | 36 MB |
| Requires iOS | **10.0** | 16.7.10 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Deployed Resources, LLC](https://appshunter.io/developer/687857452) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### CPOD Calculator

[App page](https://appshunter.io/ios/app/cpod-calculator/id1155051922)

**Features:** macOS Compatibility

**In-app purchases:** none


### Twilight Time

[App page](https://appshunter.io/ios/app/twilight-time/id6503278537)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CPOD Calculator free?

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

### Is Twilight Time free?

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

### Do CPOD Calculator or Twilight Time have ads?

Twilight Time shows ads; CPOD Calculator does not.

### Which is updated more often, CPOD Calculator or Twilight Time?

CPOD Calculator ships an update every 4 months, and Twilight Time every 2 weeks. Most recently, CPOD Calculator was updated on October 19, 2026 and Twilight Time on October 25, 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.*