# DATAMARK VEP Verify vs Invoice Maker

The clearest difference is in-app purchases: DATAMARK VEP Verify at none against Invoice Maker's 2. DATAMARK VEP Verify also leads on iOS requirement (13.0 vs 15.0). Invoice Maker's advantage is update cadence (every 5 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Invoice Maker sells 2 in-app purchases, starting at $19.00 per month. DATAMARK VEP Verify asks for nothing beyond the download.

DATAMARK VEP Verify ships an update every 3 months, Invoice Maker every 5 weeks. The most recent releases landed on October 21, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | DATAMARK VEP Verify | Invoice Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/datamark-vep-verify/id1597807919/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 22 MB | 39 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Baker International, LLC](https://appshunter.io/developer/918083379) | [Caractiv Tech](https://appshunter.io/developer/1712980218) |

## What reviewers say

### DATAMARK VEP Verify

[App page](https://appshunter.io/ios/app/datamark-vep-verify/id1597807919)

This mobile application allows users to edit GIS data, create observations, and submit editing sessions directly from the field. It utilizes smartphone GPS and integrates with a platform to streamline data verification and pinpoint edits.

**Highlights:** Edit GIS data in the field, Create observations, Submit editing sessions, Utilizes mobile GPS, Native VEP platform integration, Streamline data verification

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

**In-app purchases:** none


### Invoice Maker

[App page](https://appshunter.io/ios/app/invoice-maker-estimate-bill/id6756495015)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership Monthly | $19.00 | per month |
| Premium Membership Annually | $199.00 | per year |


## Frequently asked questions

### Is DATAMARK VEP Verify free?

DATAMARK VEP Verify is free to download, with no in-app purchases.

### Is Invoice Maker free?

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

### Do DATAMARK VEP Verify or Invoice Maker have ads?

Neither DATAMARK VEP Verify nor Invoice Maker shows ads.

### Which is updated more often, DATAMARK VEP Verify or Invoice Maker?

DATAMARK VEP Verify ships an update every 3 months, and Invoice Maker every 5 weeks. Most recently, DATAMARK VEP Verify was updated on October 21, 2026 and Invoice Maker on October 17, 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.*