# Billion Development vs TimeTapOS

The clearest difference is update cadence: TimeTapOS at every 9 days against Billion Development's every 4 months. 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.

Billion Development ships an update every 4 months, TimeTapOS every 9 days. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Billion Development | TimeTapOS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Size | 28 MB | 32 MB |
| Requires iOS | 13.4 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Billion Development and Project Management Ltd.](https://appshunter.io/developer/1119106481) | [Dynafex Technology Inc](https://appshunter.io/developer/1852303693) |

## What reviewers say

### Billion Development

[App page](https://appshunter.io/ios/app/billion-development/id1119106482)

**Features:** macOS Compatibility

**In-app purchases:** none


### TimeTapOS

[App page](https://appshunter.io/ios/app/timetapos/id6752832650)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Billion Development free?

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

### Is TimeTapOS free?

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

### Do Billion Development or TimeTapOS have ads?

Neither Billion Development nor TimeTapOS shows ads.

### Which is updated more often, Billion Development or TimeTapOS?

Billion Development ships an update every 4 months, and TimeTapOS every 9 days. Most recently, Billion Development was updated on October 13, 2026 and TimeTapOS on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*