# SignNow vs Centurion Anesthesia

The clearest difference is in-app purchases: Centurion Anesthesia at none against SignNow's 10. SignNow's advantage is chart position (#86 vs unranked). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SignNow sells 8 in-app purchases, starting at $2.99 per month. Centurion Anesthesia asks for nothing beyond the download.

SignNow ships an update weekly, Centurion Anesthesia every 6 days. The most recent releases landed on November 10, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | SignNow | Centurion Anesthesia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (18K ratings)](https://appshunter.io/ios/app/signnow-e-signature-app/id489262811/reviews)** | — |
| Number of ratings | **18K** | — |
| Positive reviews | 65.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#86** | — |
| Size | 430 MB | 63 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [airSlate, Inc.](https://appshunter.io/developer/565493707) | [Centurion Anesthesia](https://appshunter.io/developer/1802578308) |

## What reviewers say

### SignNow

[App page](https://appshunter.io/ios/app/signnow-e-signature-app/id489262811)

**Currently charting:** #86 Top Grossing · Productivity (US App Store)

Streamline document signing and management with legally binding e-signatures. Easily fill, edit, and send PDFs and other file types from any device, with robust security and collaboration features.

**Highlights:** Legally binding e-signatures, Sign, send, and manage documents, Fill and edit forms, Import from cloud storage, Real-time notifications, Kiosk Mode for in-person signatures, Offline functionality

**Features:** Apple Wallet, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SignNow | $2.99 | per month |
| SignNow | $4.99 | per month |
| SignNow Business | $6.99 | per month |
| signNow Business Monthly | $19.99 | per month |
| SignNow Business, free trial | $19.99 | per month |
| SignNow | $23.99 | per year |
| SignNow Premium | $24.99 | per month |
| SignNow Business, free trial | $95.99 | per year |

**What reviewers like**

- 🚀 Efficient and legitimate
- 🚀 Easy to use and convenient
- 🚀 Smooth and simple
- 🚀 Awesome and great app
- 🚀 Saves time and money

**What reviewers complain about**

- 🐛 Buggy and glitchy
- 💰 Expensive subscription
- 🔑 Difficult to cancel/unsubscribe
- 🔑 Unauthorized charges
- 🔑 Limited free features

**Reported bugs**

- Text alignment issues
- Signature ID not working
- Signed documents disappearing
- Inability to open/edit signed documents
- Crashes and freezes

**Requested features**

- Ability to paste text
- Improved text alignment and resizing
- Bulk scanning and document management
- Duplicate text boxes
- Rotate/resize signature box


### Centurion Anesthesia

[App page](https://appshunter.io/ios/app/centurion-anesthesia/id6743391976)

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

**In-app purchases:** none


## Frequently asked questions

### Is SignNow free?

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

### Is Centurion Anesthesia free?

Centurion Anesthesia is free to download, with no in-app purchases.

### Do SignNow or Centurion Anesthesia have ads?

Neither SignNow nor Centurion Anesthesia shows ads.

### Which is updated more often, SignNow or Centurion Anesthesia?

SignNow ships an update weekly, and Centurion Anesthesia every 6 days. Most recently, SignNow was updated on November 10, 2026 and Centurion Anesthesia on November 4, 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.*