# iDocuments Mobile vs Sentinel InstaCheck +

iDocuments Mobile and Sentinel InstaCheck + 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.

iDocuments Mobile ships an update every 2 months, Sentinel InstaCheck + every 4 months. The most recent releases landed on August 2, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | iDocuments Mobile | Sentinel InstaCheck + |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 26 MB | 3 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vision33, Inc.](https://appshunter.io/developer/1498667234) | [Energy & Compliance Technology Ltd](https://appshunter.io/developer/1533793622) |

## What reviewers say

### iDocuments Mobile

[App page](https://appshunter.io/ios/app/idocuments-mobile/id1636832029)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Sentinel InstaCheck +

[App page](https://appshunter.io/ios/app/sentinel-instacheck-plus/id6745335462)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iDocuments Mobile free?

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

### Is Sentinel InstaCheck + free?

Sentinel InstaCheck + is free to download, with no in-app purchases.

### Do iDocuments Mobile or Sentinel InstaCheck + have ads?

Neither iDocuments Mobile nor Sentinel InstaCheck + shows ads.

### Which is updated more often, iDocuments Mobile or Sentinel InstaCheck +?

iDocuments Mobile ships an update every 2 months, and Sentinel InstaCheck + every 4 months. Most recently, iDocuments Mobile was updated on August 2, 2026 and Sentinel InstaCheck + on September 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*