# Invoice Maker and Estimates ⁺ vs FieldGraph

The clearest difference is iOS requirement: Invoice Maker and Estimates ⁺ at 16.0 against FieldGraph's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Invoice Maker and Estimates ⁺ sells 2 in-app purchases, starting at $4.99 per 7 days and FieldGraph sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Invoice Maker and Estimates ⁺ ships an update every 4 days, FieldGraph every 2 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Invoice Maker and Estimates ⁺ | FieldGraph |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 7 MB | 29 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [APPALACHIAN INDUSTRIAL SERVICES LLC](https://appshunter.io/developer/1850447814) | [Joseph Sferrazza](https://appshunter.io/developer/575418111) |

## What reviewers say

### Invoice Maker and Estimates ⁺

[App page](https://appshunter.io/ios/app/invoice-maker-and-estimates/id6757754956)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly Trial | $4.99 | per 7 days |


### FieldGraph

[App page](https://appshunter.io/ios/app/fieldgraph-cad-made-easy/id6761336079)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Subscription - Monthly | $4.99 | per month |
| Pro Subscription - Annual | $49.99 | per year |


## Frequently asked questions

### Is Invoice Maker and Estimates ⁺ free?

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

### Is FieldGraph free?

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

### Do Invoice Maker and Estimates ⁺ or FieldGraph have ads?

Neither Invoice Maker and Estimates ⁺ nor FieldGraph shows ads.

### Which is updated more often, Invoice Maker and Estimates ⁺ or FieldGraph?

Invoice Maker and Estimates ⁺ ships an update every 4 days, and FieldGraph every 2 days. Most recently, Invoice Maker and Estimates ⁺ was updated on October 31, 2026 and FieldGraph on October 31, 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.*