# Calculator 4U vs Sincey

The clearest difference is update cadence: Sincey at every 4 days against Calculator 4U's every 3 weeks. Calculator 4U's advantage is iOS requirement (18.2 vs 26.0). 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.

Calculator 4U ships an update every 3 weeks, Sincey every 4 days. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Calculator 4U | Sincey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sincey/id6773422359/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | — | Free |
| Size | 2 MB | 5 MB |
| Requires iOS | **18.2** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Naseer Mohammed](https://appshunter.io/developer/1794812503) | [Sai Krishna Gunda](https://appshunter.io/developer/1435348054) |

## What reviewers say

### Calculator 4U

[App page](https://appshunter.io/ios/app/calculator-4u/id6741595255)

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

**In-app purchases:** none


### Sincey

[App page](https://appshunter.io/ios/app/sincey/id6773422359)

This app helps you track recurring activities and remember when they last occurred. It provides a simple timeline for each event, allowing you to log new memories with optional notes and see how many days have passed. You can also set reminders for future events.

**Highlights:** Track unlimited personal activities, View 'days since' counters, Save memory trails with dates and notes, Search activities and notes, Set optional reminder nudges, Sync privately across Apple devices, On-device suggestions for wording and icons

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator 4U free?

Calculator 4U is free to download, with no in-app purchases.

### Is Sincey free?

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

### Do Calculator 4U or Sincey have ads?

Neither Calculator 4U nor Sincey shows ads.

### Which is updated more often, Calculator 4U or Sincey?

Calculator 4U ships an update every 3 weeks, and Sincey every 4 days. Most recently, Calculator 4U was updated on October 6, 2026 and Sincey on October 14, 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.*