# Refuel Log vs Invoice Maker & Estimates ++

The clearest difference is in-app purchases: Refuel Log at none against Invoice Maker & Estimates ++'s 5. Invoice Maker & Estimates ++'s advantage is iOS requirement (16.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Invoice Maker & Estimates ++ sells 5 in-app purchases, starting at $4.99 per 7 days. Refuel Log asks for nothing beyond the download.

Refuel Log ships an update every 2 months, Invoice Maker & Estimates ++ every 5 weeks. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Refuel Log | Invoice Maker & Estimates ++ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 4 MB | 24 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Florian Toenz](https://appshunter.io/developer/1598410220) | [Sheryl Hunt](https://appshunter.io/developer/1869897197) |

## What reviewers say

### Refuel Log

[App page](https://appshunter.io/ios/app/refuel-log/id1598410218)

**In-app purchases:** none


### Invoice Maker & Estimates ++

[App page](https://appshunter.io/ios/app/invoice-maker-and-estimates-plus-plus/id6757921423)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly-Trial | $4.99 | per 7 days |
| Monthly | $12.99 | per month |
| Yearly | $39.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Refuel Log free?

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

### Is Invoice Maker & Estimates ++ free?

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

### Do Refuel Log or Invoice Maker & Estimates ++ have ads?

Neither Refuel Log nor Invoice Maker & Estimates ++ shows ads.

### Which is updated more often, Refuel Log or Invoice Maker & Estimates ++?

Refuel Log ships an update every 2 months, and Invoice Maker & Estimates ++ every 5 weeks. Most recently, Refuel Log was updated on October 10, 2026 and Invoice Maker & Estimates ++ on October 7, 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.*