# Acta vs Sumbi

The clearest difference is monetization model: Sumbi at free against Acta's freemium. On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Acta sells 2 in-app purchases, starting at $8.99 per month and Sumbi sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Acta ships an update every 10 days, Sumbi weekly. The most recent releases landed on October 8, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Acta | Sumbi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sumbi-study-focus-timer/id6802502926/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | Freemium | **Free** |
| Size | 28 MB | 94 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [승현 양](https://appshunter.io/developer/1833723015) | [나이스데이](https://appshunter.io/developer/1751418356) |

## What reviewers say

### Acta

[App page](https://appshunter.io/ios/app/acta-ai-goal-planner-tracker/id6790132874)

This app helps you achieve large goals by breaking them down into manageable daily tasks. It uses AI to create a personalized plan with milestones and simple daily actions, focusing on a calm and pressure-free user experience.

**Highlights:** AI-driven goal planning, Milestone tracking on a timeline, Daily task management, Four tracking methods (completion, accumulation, measurement, journaling), Calm, full-screen interface, On-device data storage

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Acta Pro Monthly | $8.99 | per month |
| Acta Pro Annual | $39.99 | per year |


### Sumbi

[App page](https://appshunter.io/ios/app/sumbi-study-focus-timer/id6802502926)

This app encourages users to spend less time on their phones by gamifying digital detox. Users engage in timed "dives" away from their devices, earning virtual sea creatures based on their focus duration. It offers a peaceful, non-punitive approach to building healthier digital habits.

**Highlights:** Timed phone-free dives, Unlock virtual sea creatures, Personalized ocean environment, Buddy dive feature, Night sea creatures, Diary-like dive log

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shallow Sea Creature | $0.99 | one-time |
| Deep Sea Creature | $1.99 | one-time |
| Abyssal Creature | $2.99 | one-time |


## Frequently asked questions

### Is Acta free?

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

### Is Sumbi free?

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

### Do Acta or Sumbi have ads?

Neither Acta nor Sumbi shows ads.

### Which is updated more often, Acta or Sumbi?

Acta ships an update every 10 days, and Sumbi weekly. Most recently, Acta was updated on October 8, 2026 and Sumbi on October 29, 2026.

---

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