# Catalyst Database vs Invoice Maker, Estimates Easy

The clearest difference is in-app purchases: Catalyst Database at none against Invoice Maker, Estimates Easy's 4. Catalyst Database also leads on iOS requirement (12.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Invoice Maker, Estimates Easy sells 4 in-app purchases, starting at $7.99 per 7 days. Catalyst Database asks for nothing beyond the download.

Catalyst Database ships an update every 4 months, Invoice Maker, Estimates Easy every 2 months. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Catalyst Database | Invoice Maker, Estimates Easy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (43 ratings)](https://appshunter.io/ios/app/invoice-maker-estimates-easy/id1582445684/reviews)** |
| Number of ratings | — | **43** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 22 MB | 48 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SoftwareStudio Sp. z o.o.](https://appshunter.io/developer/1459352818) | [Evgeniy Bujanivskiy](https://appshunter.io/developer/1547627154) |

## What reviewers say

### Catalyst Database

[App page](https://appshunter.io/ios/app/catalyst-database/id1467731708)

**Features:** macOS Compatibility

**In-app purchases:** none


### Invoice Maker, Estimates Easy

[App page](https://appshunter.io/ios/app/invoice-maker-estimates-easy/id1582445684)

Create and send professional invoices, estimates, and receipts on the go. This app helps small business owners, freelancers, and contractors manage their billing with customizable templates and easy tracking.

**Highlights:** Create and send invoices, estimates, and receipts, Convert estimates to invoices with one click, Customize documents with quantity, rate, and price, Add billing conditions, discounts, and taxes, Create custom templates for quick additions, Track income with reports, Set company logo and signature

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access | $7.99 | per 7 days |
| Full Access | $7.99 | per 7 days |
| Full access | $15.99 | per month |
| Full access | $29.99 | per year |


## Frequently asked questions

### Is Catalyst Database free?

Catalyst Database is free to download, with no in-app purchases.

### Is Invoice Maker, Estimates Easy free?

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

### Do Catalyst Database or Invoice Maker, Estimates Easy have ads?

Neither Catalyst Database nor Invoice Maker, Estimates Easy shows ads.

### Which is updated more often, Catalyst Database or Invoice Maker, Estimates Easy?

Catalyst Database ships an update every 4 months, and Invoice Maker, Estimates Easy every 2 months. Most recently, Catalyst Database was updated on October 15, 2026 and Invoice Maker, Estimates Easy on October 8, 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.*