# ゆるくやせる！ vs FastFlow

The clearest difference is ads: FastFlow at none against ゆるくやせる！'s shown. ゆるくやせる！'s advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. ゆるくやせる！ sells 7 one-off in-app purchases and FastFlow sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ゆるくやせる！ ships an update every 8 months, FastFlow every 4 months. The most recent releases landed on October 21, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ゆるくやせる！ | FastFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/id658227970/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 4 months** |
| Size | 161 MB | 2 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [REVOLAB Inc.](https://appshunter.io/developer/575787284) | [Renzo Ohhama](https://appshunter.io/developer/1812551739) |

## What reviewers say

### ゆるくやせる！

[App page](https://appshunter.io/ios/app/id658227970)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| しろくま | $0.99 | one-time |
| ぱんだ | $0.99 | one-time |
| ぺんぎん | $0.99 | one-time |
| ハニーちゃん | $0.99 | one-time |
| カパ美 | $0.99 | one-time |
| ぶたこ | $0.99 | one-time |
| 広告非表示（広告を外す） | $7.99 | one-time |


### FastFlow

[App page](https://appshunter.io/ios/app/fastflow/id6755752536)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastFlow Premium - Monthly | $2.99 | per month |
| FastFlow Premium - Yearly | $22.99 | per year |


## Frequently asked questions

### Is ゆるくやせる！ free?

ゆるくやせる！ is free to download, with in-app purchases available.

### Is FastFlow free?

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

### Do ゆるくやせる！ or FastFlow have ads?

ゆるくやせる！ shows ads; FastFlow does not.

### Which is updated more often, ゆるくやせる！ or FastFlow?

ゆるくやせる！ ships an update every 8 months, and FastFlow every 4 months. Most recently, ゆるくやせる！ was updated on October 21, 2026 and FastFlow on October 10, 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.*