# FluvalSmart vs OBDeleven VAG

The clearest difference is rating: OBDeleven VAG at 4.5 against FluvalSmart's 2.5. OBDeleven VAG also leads on ratings volume (7K vs 540) and update cadence (every 3 weeks vs every 2 months). FluvalSmart's advantage is in-app purchases (none vs 13) and iOS requirement (9.0 vs 15.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. OBDeleven VAG sells 13 one-off in-app purchases. FluvalSmart asks for nothing beyond the download.

OBDeleven VAG holds the better App Store score, 4.5 against 2.5. That said, the two scores are not equally well evidenced: OBDeleven VAG has 7K ratings behind it against 540, so its average is the more settled of the two. Written reviews split almost evenly too, at 27% and 27% positive.

FluvalSmart ships an update every 2 months, OBDeleven VAG every 3 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | FluvalSmart | OBDeleven VAG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (540 ratings)](https://appshunter.io/ios/app/fluvalsmart/id1179249357/reviews) | **[4.5 (7K ratings)](https://appshunter.io/ios/app/obdeleven-vag/id1458334123/reviews)** |
| Number of ratings | 540 | **7K** |
| Positive reviews | **27.1% of reviews** | 26.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 232 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rolf C Hagen Inc.](https://appshunter.io/developer/1321403702) | [OBDeleven UAB](https://appshunter.io/developer/1458334122) |

## What reviewers say

### FluvalSmart

[App page](https://appshunter.io/ios/app/fluvalsmart/id1179249357)

Control Fluval Bluetooth LED aquarium lights with your iOS device. Adjust colors, create custom lighting schedules, and simulate dynamic effects like cloud cover and storms. Compatible with various Fluval LED models.

**Highlights:** BLE 4.0 control, Manual, Auto, Pro modes, Independent color channel control, Preset lighting configurations, Dynamic lighting effects

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ⭐ Great light
- 🌟 Customizable lighting
- 💡 Helpful app features
- 👍 Easy to use

**What reviewers complain about**

- 🐛 Buggy app
- 🤯 Confusing UI
- 🕰️ Difficult to set precise times
- 🔌 Unreliable Bluetooth connection

**Reported bugs**

- App crashes during firmware updates
- Saved settings get reset unexpectedly
- Bluetooth connection issues after power cycles

**Requested features**

- Add ability to turn lights off completely at night
- Allow more customization of sunrise/sunset colors
- Implement weekly scheduling options
- Improve app stability and responsiveness


### OBDeleven VAG

[App page](https://appshunter.io/ios/app/obdeleven-vag/id1458334123)

Transform your smartphone into a powerful car diagnostic tool. Easily scan, diagnose, and customize your vehicle's settings. Access advanced features like coding and live data to save time and money on car maintenance.

**Highlights:** Advanced diagnostics, Coding and adaptations, Output tests, Live data monitoring, One-Click Apps for customization, Basic OBD2 diagnostics

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Credits (-30%) | $2.09 | one-time |
| Credits x10 | $3.99 | one-time |
| 100 Credits (-30%) | $16.49 | one-time |
| Credits x100 | $29.99 | one-time |
| 1000 Shadowing Credits | $34.99 | one-time |
| Pro subscription (-30%) | $45.49 | one-time |
| 500 Credits (-30%) | $69.99 | one-time |
| Pro subscription | $69.99 | one-time |
| Credits x500 | $90.99 | one-time |
| Ultimate subscription (-30%) | $125.99 | one-time |
| 5000 Shadowing Credits | $139.99 | one-time |
| Ultimate subscription | $239.99 | one-time |
| 10000 Shadowing Credits | $269.99 | one-time |

**What reviewers like**

- 🚀 Excellent diagnostic tool
- 👍 Easy to use app
- 💡 Useful one-click apps
- 🚀 Fast scanning and coding
- 👍 Saved money on dealership visits

**What reviewers complain about**

- 🐛 Buggy and unreliable connection
- 💰 Expensive credits for basic features
- 🔒 Poor customer support
- 💰 Nickel-and-diming business model
- 🐛 Compatibility issues with older devices

**Reported bugs**

- App crashes and freezes frequently
- Fails to connect to vehicle modules
- Coding changes not working as expected
- Losing purchased credits without explanation
- Incompatible with newer vehicle models

**Requested features**

- Add long coding and adaptation functionality
- Improve user interface and translations
- Provide more free credits or a one-time purchase option
- Improve compatibility with a wider range of vehicles
- Add data logging and live data monitoring features


## Frequently asked questions

### Is FluvalSmart free?

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

### Is OBDeleven VAG free?

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

### Which has better reviews, FluvalSmart or OBDeleven VAG?

OBDeleven VAG is rated higher. FluvalSmart averages 2.5 out of 5 from 540 ratings, while OBDeleven VAG averages 4.5 from 7K ratings.

### Do FluvalSmart or OBDeleven VAG have ads?

Neither FluvalSmart nor OBDeleven VAG shows ads.

### Which is updated more often, FluvalSmart or OBDeleven VAG?

FluvalSmart ships an update every 2 months, and OBDeleven VAG every 3 weeks. Most recently, FluvalSmart was updated on October 24, 2026 and OBDeleven VAG on October 30, 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.*