# iFlex Forms vs Structural Lines

iFlex Forms and Structural Lines 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 23, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | iFlex Forms | Structural Lines |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 47 MB | 56 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mindsgroup Sociedad Anonima](https://appshunter.io/developer/880701838) | [Efficient Foundations Pty Ltd](https://appshunter.io/developer/1047597104) |

## What reviewers say

### iFlex Forms

[App page](https://appshunter.io/ios/app/iflex-forms/id1094299894)

**Features:** macOS Compatibility

**In-app purchases:** none


### Structural Lines

[App page](https://appshunter.io/ios/app/structural-lines/id1425830779)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iFlex Forms free?

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

### Is Structural Lines free?

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

### Do iFlex Forms or Structural Lines have ads?

Neither iFlex Forms nor Structural Lines shows ads.

### Which is updated more often, iFlex Forms or Structural Lines?

iFlex Forms ships an update every 2 months, and Structural Lines every 2 months. Most recently, iFlex Forms was updated on September 23, 2026 and Structural Lines on September 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.*