# Estimates App vs Invoice Maker by SPK

The clearest difference is review sentiment: Invoice Maker by SPK at 73% against Estimates App's 33%. Invoice Maker by SPK also leads on rating (4.8 vs 4.3) and update cadence (weekly vs every 4 months). Estimates App's advantage is in-app purchases (none vs 9). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Invoice Maker by SPK sells 9 in-app purchases, starting at $4.99 per month. Estimates App asks for nothing beyond the download.

Invoice Maker by SPK holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Invoice Maker by SPK has 911 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 33% of Estimates App's written reviews are positive against 73% of Invoice Maker by SPK's.

Estimates App ships an update every 4 months, Invoice Maker by SPK weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Estimates App | Invoice Maker by SPK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/estimates-app/id1195128594/reviews) | **[4.8 (911 ratings)](https://appshunter.io/ios/app/invoice-maker-by-spk/id1575877820/reviews)** |
| Number of ratings | 4 | **911** |
| Positive reviews | 33.3% of reviews | **73.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 30 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IWT SOFTWARE LABS LLC](https://appshunter.io/developer/415593788) | [SPK Studios LLC](https://appshunter.io/developer/1575877822) |

## What reviewers say

### Estimates App

[App page](https://appshunter.io/ios/app/estimates-app/id1195128594)

This business tool helps you create professional estimates, invoices, and receipts quickly. It offers custom branding, virtual signatures, payment gateway integration, and detailed reporting to streamline your workflow and win more jobs.

**Highlights:** Custom branding with company logo, Intuitive estimate and invoice builder, Virtual signature pad for e-signatures, In-built payment gateway for requests, Convert estimates to invoices and receipts, Print, export, or email documents in PDF, Customer and job management

**Features:** macOS Compatibility

**In-app purchases:** none


### Invoice Maker by SPK

[App page](https://appshunter.io/ios/app/invoice-maker-by-spk/id1575877820)

Create and send professional PDF invoices and estimates quickly and easily. This ad-free, watermark-free app is ideal for small business owners, consultants, and freelancers on the go. Customize templates, track clients, and manage your billing efficiently.

**Highlights:** Create unlimited invoices and estimates, No ads or watermarks, Customizable invoice fields, Client list management, Multiple sharing options (email, WhatsApp, text), Convert estimates to invoices, Company logo and signature upload

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| My Invoice Generator | $4.99 | per month |
| The Invoice Maker | $7.99 | per month |
| Invoice Maker App | $9.99 | per month |
| Invoice Maker Pro | $9.99 | per month |
| Smart Invoice Maker | $39.99 | per year |
| Quick Invoice Maker | $59.99 | per year |
| Invoice Maker Professional | $69.99 | per year |
| App Invoice Maker | $89.99 | per year |
| Invoice Maker Plus | $89.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick and efficient
- 💡 Helpful features
- ⭐ Great app overall

**What reviewers complain about**

- 🐛 Data loss issues
- 🔒 Lack of device sync
- 📝 Limited item descriptions
- 🔧 Unreliable functionality

**Reported bugs**

- Invoices not updating correctly
- Inability to unsubscribe from paid features

**Requested features**

- Ability to sync data across devices
- Increased character limit for item descriptions
- Improved customer support


## Frequently asked questions

### Is Estimates App free?

Estimates App is free to download, with no in-app purchases.

### Is Invoice Maker by SPK free?

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

### Which has better reviews, Estimates App or Invoice Maker by SPK?

Invoice Maker by SPK is rated higher. Estimates App averages 4.3 out of 5 from 4 ratings, while Invoice Maker by SPK averages 4.8 from 911 ratings.

### Do Estimates App or Invoice Maker by SPK have ads?

Neither Estimates App nor Invoice Maker by SPK shows ads.

### Which is updated more often, Estimates App or Invoice Maker by SPK?

Estimates App ships an update every 4 months, and Invoice Maker by SPK weekly. Most recently, Estimates App was updated on October 24, 2026 and Invoice Maker by SPK on October 24, 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.*