# iDIERS vs DPA by Satisform

The clearest difference is in-app purchases: DPA by Satisform at none against iDIERS's 3. iDIERS's advantage is update cadence (every 2 months vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. iDIERS sells 3 in-app purchases, starting at $27.49 per month. DPA by Satisform asks for nothing beyond the download.

iDIERS ships an update every 2 months, DPA by Satisform every 6 months. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | iDIERS | DPA by Satisform |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Size | 201 MB | 11 MB |
| Requires iOS | **11** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [iDIERS GmbH](https://appshunter.io/developer/1483716096) | [Satisform](https://appshunter.io/developer/1609588248) |

## What reviewers say

### iDIERS

[App page](https://appshunter.io/ios/app/idiers/id1483717889)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iDIERS Pro 1 Month | $27.49 | per month |
| iDIERS Pro 1 Month | $26.99 | one-time |
| iDIERS Pro 3 Months | $79.99 | one-time |


### DPA by Satisform

[App page](https://appshunter.io/ios/app/dpa-by-satisform/id1609588246)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iDIERS free?

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

### Is DPA by Satisform free?

DPA by Satisform is free to download, with no in-app purchases.

### Do iDIERS or DPA by Satisform have ads?

Neither iDIERS nor DPA by Satisform shows ads.

### Which is updated more often, iDIERS or DPA by Satisform?

iDIERS ships an update every 2 months, and DPA by Satisform every 6 months. Most recently, iDIERS was updated on October 9, 2026 and DPA by Satisform on October 8, 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.*