# pdfFiller vs Sign.Plus

The clearest difference is review sentiment: Sign.Plus at 86% against pdfFiller's 20%. Sign.Plus also leads on rating (4.8 vs 4.4). pdfFiller's advantage is ratings volume (8.5K vs 281) and chart position (#60 vs unranked). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. pdfFiller sells 10 in-app purchases, starting at $19.99 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 4.4. That said, the two scores are not equally well evidenced: pdfFiller has 8.5K ratings behind it against 281, so its average is the more settled of the two. Written reviews point the same way: 20% of pdfFiller's written reviews are positive against 86% of Sign.Plus's.

pdfFiller ships an update fortnightly, Sign.Plus every 3 weeks. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | pdfFiller | Sign.Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (8.5K ratings)](https://appshunter.io/ios/app/pdffiller-edit-pdf-documents/id571613512/reviews) | **[4.8 (281 ratings)](https://appshunter.io/ios/app/signplus-sign-pdf-documents/id1478723637/reviews)** |
| Number of ratings | **8.5K** | 281 |
| Positive reviews | 19.9% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#60** | — |
| Size | 178 MB | 129 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [airSlate, Inc.](https://appshunter.io/developer/565493707) | [Alohi](https://appshunter.io/developer/1172555270) |

## What reviewers say

### pdfFiller

[App page](https://appshunter.io/ios/app/pdffiller-edit-pdf-documents/id571613512)

**Currently charting:** #60 Top Grossing · Business (US App Store)

This app transforms your device into a mobile office for managing PDF documents. Edit, eSign, and fill out forms, then share or export them. It offers secure storage and access to millions of templates, with offline capabilities.

**Highlights:** Edit PDF documents, Esign and fill out forms, Share and collaborate on documents, Securely store unlimited documents, Access millions of fillable templates, Work offline

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF editor • Basic Monthly | $19.99 | per month |
| PDF editor • Basic Monthly | $19.99 | per month |
| PDF editor • Plus Monthly | $29.99 | per month |
| PDF editor • Plus Monthly | $29.99 | per month |
| PDF editor • Premium Monthly | $39.99 | per month |
| Premium Monthly | $39.99 | per month |
| PDF editor • Basic Annual | $95.99 | per year |
| PDF editor • Basic Annual | $95.99 | per year |
| PDF editor • Plus Annual | $119.99 | per year |
| PDF editor • Premium Annual | $179.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Makes virtual work easy
- 💡 Great customer service/support
- 👍 Simple and organized
- 👍 Helpful for PDF management

**What reviewers complain about**

- 🐛 Buggy and glitchy
- 💰 Expensive subscription
- 🔒 Concerns about privacy and security
- 🤥 Misleading/deceptive advertising
- 🔒 Difficult to cancel subscription

**Reported bugs**

- Text/annotations not saving correctly
- Freezing/crashing issues
- Incompatibility with certain devices
- Login/account issues

**Requested features**

- Undo/redo functionality
- Ability to control opacity of annotations
- Better file management options
- Improved mobile experience
- Clearer pricing and subscription details


### 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 pdfFiller free?

pdfFiller 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, pdfFiller or Sign.Plus?

Sign.Plus is rated higher. pdfFiller averages 4.4 out of 5 from 8.5K ratings, while Sign.Plus averages 4.8 from 281 ratings.

### Do pdfFiller or Sign.Plus have ads?

Neither pdfFiller nor Sign.Plus shows ads.

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

pdfFiller ships an update fortnightly, and Sign.Plus every 3 weeks. Most recently, pdfFiller was updated on September 24, 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.*