# BlackBox FMS vs TNAVS

The clearest difference is ads: BlackBox FMS at none against TNAVS's shown. BlackBox FMS also leads on update cadence (fortnightly vs every 6 weeks). TNAVS's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price 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.

BlackBox FMS ships an update fortnightly, TNAVS every 6 weeks. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | BlackBox FMS | TNAVS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (9 ratings)](https://appshunter.io/ios/app/blackbox-fms/id937229552/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 58.9% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free | — |
| Size | 112 MB | 89 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Rajesh Vaidya](https://appshunter.io/developer/937229551) | [javad zahmatkesh](https://appshunter.io/developer/1805213874) |

## What reviewers say

### BlackBox FMS

[App page](https://appshunter.io/ios/app/blackbox-fms/id937229552)

Monitor your vehicle's real-time location, status, and details like speed and distance on a map. View daily routes, reports, and receive notifications for critical events such as battery disconnection or geofence breaches. Request vehicle service directly through the app.

**Highlights:** Real-time vehicle location on map, Vehicle status monitoring (moving, parked), Detailed vehicle information (speed, distance), Daily route and report viewing, Service request functionality, Customizable notifications (battery, geofence, speed)

**Features:** macOS Compatibility

**In-app purchases:** none


### TNAVS

[App page](https://appshunter.io/ios/app/tnavs/id6743943751)

**In-app purchases:** none


## Frequently asked questions

### Is BlackBox FMS free?

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

### Is TNAVS free?

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

### Do BlackBox FMS or TNAVS have ads?

TNAVS shows ads; BlackBox FMS does not.

### Which is updated more often, BlackBox FMS or TNAVS?

BlackBox FMS ships an update fortnightly, and TNAVS every 6 weeks. Most recently, BlackBox FMS was updated on October 24, 2026 and TNAVS on October 15, 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.*