# Acrobat Reader vs Sign.Plus

The clearest difference is review sentiment: Sign.Plus at 86% against Acrobat Reader's 49%. Sign.Plus also leads on rating (4.8 vs 4.6) and iOS requirement (15.0 vs 18.3). Acrobat Reader's advantage is ratings volume (654K vs 281) and update cadence (every 9 days vs every 3 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Acrobat Reader sells 16 in-app purchases, starting at $3.99 per month and Sign.Plus sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Sign.Plus holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Acrobat Reader has 654K ratings behind it against 281, so its average is the more settled of the two. Written reviews point the same way: 49% of Acrobat Reader's written reviews are positive against 86% of Sign.Plus's.

Acrobat Reader ships an update every 9 days, Sign.Plus every 3 weeks. Both last shipped on September 25, 2026.

## The numbers

| Metric | Acrobat Reader | Sign.Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (654K ratings)](https://appshunter.io/ios/app/acrobat-reader-pdf-editor/id469337564/reviews) | **[4.8 (281 ratings)](https://appshunter.io/ios/app/signplus-sign-pdf-documents/id1478723637/reviews)** |
| Number of ratings | **654K** | 281 |
| Positive reviews | 49.2% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Best chart rank | **#2** | — |
| Size | 522 MB | 129 MB |
| Requires iOS | 18.3 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Adobe Inc.](https://appshunter.io/developer/331646274) | [Alohi](https://appshunter.io/developer/1172555270) |

## What reviewers say

### Acrobat Reader

[App page](https://appshunter.io/ios/app/acrobat-reader-pdf-editor/id469337564)

**Currently charting:** #2 Top Grossing · Business, #14 Top Free · Business, #100 Top Grossing (US App Store)

This app is a powerful PDF tool for viewing, editing, annotating, and signing documents. It offers AI-powered features for summarizing and interacting with PDFs, along with robust conversion and security options. Collaborate on files and access your documents from anywhere.

**Highlights:** View, edit, and annotate PDFs, Sign and fill PDF forms, Convert files to and from PDF, AI-powered document summarization, Collaborate in PDF Spaces, Compress and secure PDFs, Optical Character Recognition (OCR)

**Features:** iMessage stickers, Vision Pro support

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Acrobat Premium - Monthly | $3.99 | per month |
| Adobe Acrobat Premium | $4.99 | per month |
| AI Assistant for Acrobat | $6.99 | per month |
| Acrobat Premium | $7.49 | per 7 days |
| Acrobat Premium - Monthly | $9.99 | per month |
| Acrobat Premium - Weekly | $9.99 | per 7 days |
| PDF Pack - Doc Creator | $9.99 | per month |
| Premium - Edit & Create PDF | $9.99 | per month |
| PDF Edit and Convert Monthly | $12.99 | per month |
| Acrobat Premium - Monthly | $12.99 | per month |
| Acrobat Premium - Monthly | $14.99 | per month |
| Acrobat Reader Plus - Yearly | $19.99 | per year |
| Adobe ExportPDF | $23.99 | per year |
| Adobe Acrobat Pro | $24.99 | per month |
| Acrobat Premium - Yearly | $48.99 | per year |
| Acrobat Premium - Yearly | $69.99 | per year |

**What reviewers like**

- 🚀 Fast and efficient
- 🔒 Secure document storage
- 👍 Convenient for reading and annotating PDFs
- 👍 Useful for students and professionals

**What reviewers complain about**

- 🐛 Buggy and unreliable
- 🔒 Overly intrusive login requirements
- 💰 Expensive subscription model
- 👎 Counterintuitive user interface changes
- 🔍 Poor search and organization features

**Reported bugs**

- Frequent crashes and freezes
- Inconsistent behavior when editing PDFs
- Inability to open or save certain file types
- Sync issues between mobile and desktop versions

**Requested features**

- Add erase tool for annotations
- Improve palm rejection for Apple Pencil
- Allow direct text editing in PDFs
- Provide better cloud integration and sync
- Offer more customization options


### Sign.Plus

[App page](https://appshunter.io/ios/app/signplus-sign-pdf-documents/id1478723637)

This app provides a secure and legally-binding electronic signature solution for signing documents on mobile devices. It allows users to fill and sign PDFs, scan paper documents, and send documents to others for signature with tamper-proof audit trails.

**Highlights:** Fill and sign documents, Send documents for signature, Tamper-proof audit trails, Legally-binding electronic signatures, Paper scanning to digital, Data encryption

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Personal Plan (One Month) | $14.99 | one-time |
| Premium Plan (One Month) | $29.99 | one-time |
| Personal Plan (One Year) | $119.99 | one-time |
| Professional Plan (One Year) | $239.99 | one-time |

**What reviewers like**

- 👍 Easy to use interface
- 🚀 Efficient document signing
- 🔒 Secure document handling
- 💡 Scans everything easily
- 👍 Convenient for quick signatures

**What reviewers complain about**

- 🐛 Horrible app interface
- 🐛 Difficult to use on phone
- 🐛 Bait and switch tactics
- 🐛 Tricky to unsubscribe
- 🐛 App not working

**Reported bugs**

- App not working
- Freezes occasionally
- Support obstructing work

**Requested features**

- Ability to send documents out
- Improved phone interface


## Frequently asked questions

### Is Acrobat Reader free?

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

### Is Sign.Plus free?

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

### Which has better reviews, Acrobat Reader or Sign.Plus?

Sign.Plus is rated higher. Acrobat Reader averages 4.6 out of 5 from 654K ratings, while Sign.Plus averages 4.8 from 281 ratings.

### Do Acrobat Reader or Sign.Plus have ads?

Neither Acrobat Reader nor Sign.Plus shows ads.

### Which is updated more often, Acrobat Reader or Sign.Plus?

Acrobat Reader ships an update every 9 days, and Sign.Plus every 3 weeks. Most recently, Acrobat Reader was updated on September 25, 2026 and Sign.Plus on September 25, 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.*