# iSign vs ShiftFlow

The clearest difference is ratings volume: ShiftFlow at 2.3K against iSign's 1. ShiftFlow also leads on device support (4 vs 2) and iOS requirement (15.0 vs 18.0). iSign's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 89%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. iSign sells 4 in-app purchases, starting at $0.99 per month and ShiftFlow sells 13 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

iSign holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ShiftFlow has 2.3K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of iSign's written reviews are positive against 89% of ShiftFlow's.

iSign ships an update fortnightly, ShiftFlow every 3 weeks. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | iSign | ShiftFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/isign-pdf-reader-ai-editor/id6444390217/reviews)** | [4.8 (2.3K ratings)](https://appshunter.io/ios/app/shiftflow-track-team-hours/id6466682008/reviews) |
| Number of ratings | 1 | **2.3K** |
| Positive reviews | **100.0% of reviews** | 88.5% 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 |
| Size | 69 MB | 186 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Bruno Wide](https://appshunter.io/developer/1262013609) | [Pixnbit Inc.](https://appshunter.io/developer/930234929) |

## What reviewers say

### iSign

[App page](https://appshunter.io/ios/app/isign-pdf-reader-ai-editor/id6444390217)

Transform any document into a searchable, signable PDF. Scan, organize, and edit with AI-powered summaries and OCR. Your data remains private on your device.

**Highlights:** Scan documents to PDF, Automatic edge detection, Edit and sign documents, OCR text recognition, AI-powered summaries, On-device data storage

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scanner Pro - Monthly Promo | $0.99 | per month |
| Scanner Pro - Monthly | $1.99 | per month |
| Scanner Pro - Yearly Promo | $9.99 | per year |
| Scanner Pro - Yearly | $19.99 | per year |


### ShiftFlow

[App page](https://appshunter.io/ios/app/shiftflow-track-team-hours/id6466682008)

Streamline team time tracking and scheduling with a user-friendly system. Features include real-time clock-ins with GPS verification, smart shift planning, and easy timesheet exports. Simplify payroll and gain visibility into team hours.

**Highlights:** Real-time clock-ins with GPS verification, Smart shift scheduling and availability management, One-click timesheet exports (CSV/PDF), Job code and earnings tracking, Time off management, Team chat and messaging

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Personal Weekly | $1.99 | per 7 days |
| Personal Single User Monthly | $4.99 | per month |
| Team Monthly | $19.99 | per month |
| Team Monthly Welcome Offer | $19.99 | per month |
| Up to 5 Users Monthly | $24.99 | per month |
| Up to 10 Users Monthly | $49.99 | per month |
| Personal Yearly | $50.00 | per year |
| Personal Single User Yearly | $50.00 | per year |
| Up to 15 Users Monthly | $74.99 | per month |
| Up to 25 Users Monthly | $124.99 | per month |
| Team Annual Mid Trial Offer | $199.99 | per year |
| Team Annual | $199.99 | per year |
| Up to 5 Users Yearly | $250.00 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient time tracking
- 🔒 Secure with GPS and selfie check-in
- 💰 Helpful for payroll and invoicing
- 🤝 Enhances team collaboration and accountability

**What reviewers complain about**

- 🔒 Paywall after trial period
- 🐛 Occasional login and account issues
- 🔍 Lacking some advanced features (e.g. scheduling)

**Reported bugs**

- Login issues after extended use
- Discrepancies in estimated pay calculations

**Requested features**

- Calendar feature for scheduling shifts
- Mileage tracking functionality
- Improved group management and sharing


## Frequently asked questions

### Is iSign free?

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

### Is ShiftFlow free?

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

### Which has better reviews, iSign or ShiftFlow?

iSign is rated higher. iSign averages 5.0 out of 5 from 1 ratings, while ShiftFlow averages 4.8 from 2.3K ratings.

### Do iSign or ShiftFlow have ads?

Neither iSign nor ShiftFlow shows ads.

### Which is updated more often, iSign or ShiftFlow?

iSign ships an update fortnightly, and ShiftFlow every 3 weeks. Most recently, iSign was updated on October 14, 2026 and ShiftFlow on October 17, 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.*