# SIGMO vs OffBlock

The clearest difference is price: OffBlock at Free against SIGMO's $1.99. SIGMO's advantage is in-app purchases (none vs 4) and iOS requirement (12.0 vs 15.0). On update cadence, ads and device support there is nothing between them.

OffBlock is free to download; SIGMO costs $1.99 up front. OffBlock sells 4 in-app purchases, starting at $2.99 per month. SIGMO asks for nothing beyond the download.

SIGMO ships an update every 5 weeks, OffBlock every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | SIGMO | OffBlock |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.8 (104 ratings)](https://appshunter.io/ios/app/offblock/id1231996198/reviews)** |
| Number of ratings | — | **104** |
| Positive reviews | — | 48.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 275 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Manuel Javorik](https://appshunter.io/developer/1021365313) | [OffBlock GmbH](https://appshunter.io/developer/1231996197) |

## What reviewers say

### SIGMO

[App page](https://appshunter.io/ios/app/sigmo/id1021365314)

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

**In-app purchases:** none


### OffBlock

[App page](https://appshunter.io/ios/app/offblock/id1231996198)

This app combines a smart pilot logbook with a flight crew organizer. It offers features like automated roster imports, flight logging, and crew communication tools. Share your aviation life and manage your professional schedule efficiently.

**Highlights:** Smart flight logging, Automated roster imports, Integrated aircraft management, Calendar with timeline, Crew communication tools, Roster sharing, Data export in official formats

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OffBlock Pro (1 month) | $2.99 | per month |
| OffBlock Pro+ (1 month) | $6.99 | per month |
| OffBlock Pro (1 year) | $29.99 | per year |
| OffBlock Pro+ (1 year) | $69.99 | per year |

**What reviewers like**

- 👍 Great support team
- 👍 App is good and useful
- 👍 Top App
- 👍 Best Support and product
- 👍 Works without difficulty

**What reviewers complain about**

- 😞 Roster import not working
- 😞 App is unusable
- 😞 Way too expensive
- 😞 Service is really bad
- 😞 Data lost

**Reported bugs**

- Roster import not working
- App is unusable
- Roster autodownload and manual download doesn't work
- Stby duties are not visible
- Data lost

**Requested features**

- Export in calendar view for printing
- Calendar export to be fixed
- More content in logbook for general aviation
- Reintroduce 'remark' option
- Desktop version available again


## Frequently asked questions

### Is SIGMO free?

SIGMO costs $1.99, with no in-app purchases.

### Is OffBlock free?

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

### Do SIGMO or OffBlock have ads?

Neither SIGMO nor OffBlock shows ads.

### Which is updated more often, SIGMO or OffBlock?

SIGMO ships an update every 5 weeks, and OffBlock every 2 months. Most recently, SIGMO was updated on November 1, 2026 and OffBlock on November 6, 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.*