# IDERENCE【公式アプリ】 vs FLEX

IDERENCE【公式アプリ】 and FLEX are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IDERENCE【公式アプリ】 ships an update every 39 months, FLEX every 37 months. The most recent releases landed on May 15, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | IDERENCE【公式アプリ】 | FLEX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 37 months** |
| Size | 38 MB | 19 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TAKAHIRO KIKUTANI](https://appshunter.io/developer/1608318749) | [TAKATOSHI MATSUZAKI](https://appshunter.io/developer/1626458617) |

## What reviewers say

### IDERENCE【公式アプリ】

[App page](https://appshunter.io/ios/app/iderence/id1608318747)

**In-app purchases:** none


### FLEX

[App page](https://appshunter.io/ios/app/flex/id1626458405)

**In-app purchases:** none


## Frequently asked questions

### Is IDERENCE【公式アプリ】 free?

IDERENCE【公式アプリ】 is free to download, with no in-app purchases.

### Is FLEX free?

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

### Do IDERENCE【公式アプリ】 or FLEX have ads?

Neither IDERENCE【公式アプリ】 nor FLEX shows ads.

### Which is updated more often, IDERENCE【公式アプリ】 or FLEX?

IDERENCE【公式アプリ】 ships an update every 39 months, and FLEX every 37 months. Most recently, IDERENCE【公式アプリ】 was updated on May 15, 2026 and FLEX on May 16, 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.*