# zistemo vs SFK

The clearest difference is update cadence: zistemo at monthly against SFK's every 4 months. zistemo also leads on iOS requirement (13.0 vs 15.0). 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.

zistemo ships an update monthly, SFK every 4 months. The most recent releases landed on September 8, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | zistemo | SFK |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | — |
| Size | 45 MB | 50 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dayquiri GmbH](https://appshunter.io/developer/579268966) | [Barnabas Buecher](https://appshunter.io/developer/1207945658) |

## What reviewers say

### zistemo

[App page](https://appshunter.io/ios/app/zistemo-time-tracking/id1058504772)

This app offers instant time and expense tracking for individuals and teams. It helps users stay organized, boost productivity, and manage projects efficiently by logging time, creating invoices, and tracking expenses with receipt photos. The tool is designed for freelancers, business owners, and entrepreneurs seeking better time management and financial oversight.

**Highlights:** Instant time tracking, Expense tracking with receipt photos, Project and task logging, Invoice creation, Automated timesheet generation, Customized business reports, Staff progress monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### SFK

[App page](https://appshunter.io/ios/app/sfk/id1207945659)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is zistemo free?

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

### Is SFK free?

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

### Do zistemo or SFK have ads?

Neither zistemo nor SFK shows ads.

### Which is updated more often, zistemo or SFK?

zistemo ships an update monthly, and SFK every 4 months. Most recently, zistemo was updated on September 8, 2026 and SFK on September 16, 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.*