# ESigno vs iSmartDiag

The clearest difference is rating: ESigno at 5.0 against iSmartDiag's 1.0. ESigno also leads on iOS requirement (11.0 vs 15.5). iSmartDiag's advantage is update cadence (every 4 days vs fortnightly). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ESigno holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

ESigno ships an update fortnightly, iSmartDiag every 4 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | ESigno | iSmartDiag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/esigno/id1618774443/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/ismartdiag/id1669179670/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free | Free |
| Size | 42 MB | 615 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Seyyide Zeynep Gungur](https://appshunter.io/developer/1618774776) | [Shenzhen Vident Technology Co., Ltd](https://appshunter.io/developer/1661505875) |

## What reviewers say

### ESigno

[App page](https://appshunter.io/ios/app/esigno/id1618774443)

Easily sign documents from any device, anywhere. Send, receive, and sign contracts, proposals, and quotes instantly and legally within a minute.

**Highlights:** Sign documents instantly, Send and receive documents, Legally binding signatures, Cross-device compatibility, Sign contracts and proposals

**Features:** macOS Compatibility

**In-app purchases:** none


### iSmartDiag

[App page](https://appshunter.io/ios/app/ismartdiag/id1669179670)

This app provides powerful automotive diagnostic functions for mechanics and DIYers. It connects via Bluetooth to scan and diagnose over 110 vehicle brands, offering detailed system analysis and maintenance functions. Save time and costs with real-time monitoring and comprehensive reports.

**Highlights:** 110+ vehicle brands coverage, Full system scan & diagnosis, Bi-directional control, Read/erase fault codes, Maintenance functions (e.g., service reset, EPB), Data stream graph display, Bluetooth connectivity

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

**In-app purchases:** none


## Frequently asked questions

### Is ESigno free?

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

### Is iSmartDiag free?

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

### Which has better reviews, ESigno or iSmartDiag?

ESigno is rated higher. ESigno averages 5.0 out of 5 from 1 ratings, while iSmartDiag averages 1.0 from 2 ratings.

### Do ESigno or iSmartDiag have ads?

Neither ESigno nor iSmartDiag shows ads.

### Which is updated more often, ESigno or iSmartDiag?

ESigno ships an update fortnightly, and iSmartDiag every 4 days. Most recently, ESigno was updated on November 3, 2026 and iSmartDiag on November 3, 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.*