# Satheia vs Kakidoc

The clearest difference is update cadence: Satheia at every 6 days against Kakidoc's fortnightly. Satheia also leads on iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Satheia sells 2 in-app purchases, starting at $4.99 per month and Kakidoc sells 1 in-app purchase, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Satheia ships an update every 6 days, Kakidoc fortnightly. The most recent releases landed on October 19, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Satheia | Kakidoc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/satheia/id6755171074/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | Subscription | — |
| Size | 63 MB | 52 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [SATHEIA LLC](https://appshunter.io/developer/1852420986) | [Daisuke Kijihana](https://appshunter.io/developer/1718388562) |

## What reviewers say

### Satheia

[App page](https://appshunter.io/ios/app/satheia/id6755171074)

This app helps you manage important life tasks and deadlines with smart reminders and secure document storage. It offers pre-made templates and customizable notifications to ensure nothing important is missed.

**Highlights:** Smart reminder system, Expert-curated templates, Secure document storage, Customizable notifications, Track important tasks, Privacy-focused design

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Satheia Pro – Monthly | $4.99 | per month |
| Satheia Pro – Yearly | $39.99 | per year |


### Kakidoc

[App page](https://appshunter.io/ios/app/kakidoc/id6772444946)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Plan(Monthly) | $5.99 | per month |


## Frequently asked questions

### Is Satheia free?

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

### Is Kakidoc free?

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

### Do Satheia or Kakidoc have ads?

Neither Satheia nor Kakidoc shows ads.

### Which is updated more often, Satheia or Kakidoc?

Satheia ships an update every 6 days, and Kakidoc fortnightly. Most recently, Satheia was updated on October 19, 2026 and Kakidoc on October 31, 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.*