# Invoice App° vs Estimate Maker Flex

The clearest difference is review sentiment: Estimate Maker Flex at 97% against Invoice App°'s 29%. Estimate Maker Flex also leads on rating (4.8 vs 4.3) and ratings volume (101 vs 12). Invoice App°'s advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Invoice App° sells 4 in-app purchases, starting at $5.99 per month and Estimate Maker Flex sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Estimate Maker Flex holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Estimate Maker Flex has 101 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 29% of Invoice App°'s written reviews are positive against 97% of Estimate Maker Flex's.

Invoice App° ships an update every 3 weeks, Estimate Maker Flex every 8 days. The most recent releases landed on October 5, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Invoice App° | Estimate Maker Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (12 ratings)](https://appshunter.io/ios/app/invoice-app/id1311274386/reviews) | **[4.8 (101 ratings)](https://appshunter.io/ios/app/estimate-maker-flex/id1594306406/reviews)** |
| Number of ratings | 12 | **101** |
| Positive reviews | 28.6% of reviews | **97.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 43 MB | 99 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [meisterwork GmbH](https://appshunter.io/developer/1111570171) | [B TO J PTY LTD](https://appshunter.io/developer/569308231) |

## What reviewers say

### Invoice App°

[App page](https://appshunter.io/ios/app/invoice-app/id1311274386)

Create professional invoices and quotes quickly on your mobile device. Get paid faster with integrated payment options and track your business performance with insightful reports. Features voice input for easy invoice creation.

**Highlights:** Professional invoice and quote templates, Integrated PayPal and Stripe payments, Business performance reports, Customer email open notifications, Voice input for invoice creation, Offer to invoice conversion, Customizable templates and color schemes

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Subscription | $5.99 | per month |
| Monthly Pro Subscription | $5.99 | per month |
| Yearly Pro Subscription | $49.99 | per year |
| Lifetime Pro Subscription | $119.99 | one-time |


### Estimate Maker Flex

[App page](https://appshunter.io/ios/app/estimate-maker-flex/id1594306406)

Create and send professional estimates quickly and easily. Convert estimates to invoices with a single tap. Customize titles, currencies, and date formats for a personalized touch. Works offline and supports multiple templates.

**Highlights:** Create and send estimates, Convert estimates to invoices, Customizable titles and subtitles, Multi-currency support, Multiple date formats, Offline functionality, Professional templates

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $5.99 | per month |
| 1 Year Subscription | $49.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient for creating estimates
- 👍 Practical and functional
- 👍 Professional-looking estimates
- 👍 Helpful for business growth

**What reviewers complain about**

- ❓ Translation not complete
- ❓ A little difficult to understand initially
- 🐛 App not opening

**Reported bugs**

- App not opening

**Requested features**

- Add option to get client signature
- Add signature of the person who made the estimate


## Frequently asked questions

### Is Invoice App° free?

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

### Is Estimate Maker Flex free?

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

### Which has better reviews, Invoice App° or Estimate Maker Flex?

Estimate Maker Flex is rated higher. Invoice App° averages 4.3 out of 5 from 12 ratings, while Estimate Maker Flex averages 4.8 from 101 ratings.

### Do Invoice App° or Estimate Maker Flex have ads?

Neither Invoice App° nor Estimate Maker Flex shows ads.

### Which is updated more often, Invoice App° or Estimate Maker Flex?

Invoice App° ships an update every 3 weeks, and Estimate Maker Flex every 8 days. Most recently, Invoice App° was updated on October 5, 2026 and Estimate Maker Flex on October 13, 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.*