# DutyFlow vs ValidSign

DutyFlow and ValidSign 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 9, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | DutyFlow | ValidSign |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 16 MB | 37 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [OrcaGroup](https://appshunter.io/developer/1046828969) | [ValidSign BV](https://appshunter.io/developer/1611769579) |

## What reviewers say

### DutyFlow

[App page](https://appshunter.io/ios/app/dutyflow/id1444017871)

**In-app purchases:** none


### ValidSign

[App page](https://appshunter.io/ios/app/validsign/id1611769577)

**In-app purchases:** none


## Frequently asked questions

### Is DutyFlow free?

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

### Is ValidSign free?

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

### Do DutyFlow or ValidSign have ads?

Neither DutyFlow nor ValidSign shows ads.

### Which is updated more often, DutyFlow or ValidSign?

DutyFlow ships an update every 2 months, and ValidSign every 2 months. Most recently, DutyFlow was updated on September 9, 2026 and ValidSign on September 14, 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.*