# Time to fast! vs 탄다사이클

The clearest difference is in-app purchases: Time to fast! at none against 탄다사이클's 5. Time to fast! also leads on update cadence (every 3 days vs fortnightly) and review sentiment (71% vs 50%). 탄다사이클's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. 탄다사이클 sells 5 in-app purchases, starting at $5.99 per month. Time to fast! asks for nothing beyond the download.

Time to fast! ships an update every 3 days, 탄다사이클 fortnightly. The most recent releases landed on October 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Time to fast! | 탄다사이클 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **71.4% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | Free | — |
| Size | 13 MB | 1.4 GB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Eunbee Kang](https://appshunter.io/developer/1640984912) | [Sung-il PARK](https://appshunter.io/developer/1738165942) |

## What reviewers say

### Time to fast!

[App page](https://appshunter.io/ios/app/time-to-fast/id6470159635)

Easily monitor your intermittent fasting schedule with a visual 24-hour timeline. Adjust plans, track progress, and receive timely notifications for fasting and eating periods. Save your results and review past fasting records to stay on track with your health goals.

**Highlights:** Circular 24-hour timeline, Adjustable fasting plans, Save and edit fasting results, Past fasting records review, Fasting start/end notifications, Pre-set fasting plans

**Features:** macOS Compatibility

**In-app purchases:** none


### 탄다사이클

[App page](https://appshunter.io/ios/app/id6480098767)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 월간 Basic 멤버십 | $5.99 | per month |
| 월간 4K 멤버십 | $9.99 | per month |
| 6개월 Basic 멤버십 | $29.99 | per 6 months |
| 연간 Basic 멤버십 | $59.99 | per year |
| 연간 4K 멤버십 | $99.99 | per year |


## Frequently asked questions

### Is Time to fast! free?

Time to fast! is free to download, with no in-app purchases.

### Is 탄다사이클 free?

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

### Do Time to fast! or 탄다사이클 have ads?

Neither Time to fast! nor 탄다사이클 shows ads.

### Which is updated more often, Time to fast! or 탄다사이클?

Time to fast! ships an update every 3 days, and 탄다사이클 fortnightly. Most recently, Time to fast! was updated on October 1, 2026 and 탄다사이클 on September 19, 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.*