# Interlaw Directory vs Sign.Plus

The clearest difference is in-app purchases: Interlaw Directory at none against Sign.Plus's 4. Interlaw Directory also leads on iOS requirement (10.0 vs 15.0). Sign.Plus's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Sign.Plus sells 4 one-off in-app purchases. Interlaw Directory asks for nothing beyond the download.

Interlaw Directory ships an update every 3 months, Sign.Plus every 3 weeks. The most recent releases landed on May 16, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Interlaw Directory | Sign.Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (281 ratings)](https://appshunter.io/ios/app/signplus-sign-pdf-documents/id1478723637/reviews)** |
| Number of ratings | — | **281** |
| Positive reviews | — | 85.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 22 MB | 129 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [calls9 Limited](https://appshunter.io/developer/556079258) | [Alohi](https://appshunter.io/developer/1172555270) |

## What reviewers say

### Interlaw Directory

[App page](https://appshunter.io/ios/app/interlaw-directory/id1230996438)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Interlaw Directory free?

Interlaw Directory is free to download, with no in-app purchases.

### Is Sign.Plus free?

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

### Do Interlaw Directory or Sign.Plus have ads?

Neither Interlaw Directory nor Sign.Plus shows ads.

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

Interlaw Directory ships an update every 3 months, and Sign.Plus every 3 weeks. Most recently, Interlaw Directory was updated on May 16, 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.*