# ZeroZip vs Calioo

The clearest difference is update cadence: Calioo at every 6 days against ZeroZip's every 2 months. ZeroZip's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ZeroZip sells 1 one-off in-app purchase and Calioo sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ZeroZip ships an update every 2 months, Calioo every 6 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | ZeroZip | Calioo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calioo-event-tracker/id6756068226/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 36 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [genghong Xie](https://appshunter.io/developer/1785558382) | [Shaanxi Sijin Network Technology Co., Ltd](https://appshunter.io/developer/1601103132) |

## What reviewers say

### ZeroZip

[App page](https://appshunter.io/ios/app/zerozip/id6755241805)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free | $1.99 | one-time |


### Calioo

[App page](https://appshunter.io/ios/app/calioo-event-tracker/id6756068226)

This minimalist tool allows you to easily track repetitive events like habits, medication, or chores with a simple double-tap. Visualize your progress with a clear history overview and ensure your data's privacy with local storage and optional cloud sync.

**Highlights:** Instant double-tap logging, Clear history visualization, Local data storage, Cloud sync (iCloud/Google Drive), App Lock for privacy, Minimalist interface

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Pro · 3 Months | $1.99 | per 3 months |
| Pro · 12 Months | $6.99 | per year |
| Pro · Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is ZeroZip free?

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

### Is Calioo free?

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

### Do ZeroZip or Calioo have ads?

Neither ZeroZip nor Calioo shows ads.

### Which is updated more often, ZeroZip or Calioo?

ZeroZip ships an update every 2 months, and Calioo every 6 days. Most recently, ZeroZip was updated on October 24, 2026 and Calioo 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.*