# FuelTech Datalog Viewer vs Aces Connect

The clearest difference is review sentiment: Aces Connect at 100% against FuelTech Datalog Viewer's 40%. Aces Connect also leads on update cadence (every 2 months vs every 9 months) and rating (5.0 vs 4.8). FuelTech Datalog Viewer's advantage is iOS requirement (9.3 vs 13.0). 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.

Aces Connect holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 40% of FuelTech Datalog Viewer's written reviews are positive against 100% of Aces Connect's.

FuelTech Datalog Viewer ships an update every 9 months, Aces Connect every 2 months. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | FuelTech Datalog Viewer | Aces Connect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/fueltech-datalog-viewer/id1303811774/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/aces-connect/id6749562285/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 168 MB | 45 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [FuelTech](https://appshunter.io/developer/519474170) | [ACES FUEL INJECTION INC](https://appshunter.io/developer/1831183190) |

## What reviewers say

### FuelTech Datalog Viewer

[App page](https://appshunter.io/ios/app/fueltech-datalog-viewer/id1303811774)

Analyze engine data logs from compatible FuelTech ECUs on your mobile device. View up to four channels simultaneously for quick data analysis and check status events for errors. Log files must be transferred to the device manually.

**Highlights:** View up to 4 recorded channels simultaneously, Quick data analysis, Check status events for errors, Supports FT450, FT500, FT500LITE, FT550, FT550LITE, FT600 models, Log file viewer for phone/tablet

**Features:** macOS Compatibility

**In-app purchases:** none


### Aces Connect

[App page](https://appshunter.io/ios/app/aces-connect/id6749562285)

Wirelessly control your engine's EFI system with real-time data monitoring and instant adjustments. Tune your engine on the fly and review detailed performance logs through an intuitive interface.

**Highlights:** Wireless Bluetooth connection, Real-time engine data monitoring, Instant tuning adjustments, Performance data logging, Customizable dashboards

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

**In-app purchases:** none


## Frequently asked questions

### Is FuelTech Datalog Viewer free?

FuelTech Datalog Viewer is free to download, with no in-app purchases.

### Is Aces Connect free?

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

### Which has better reviews, FuelTech Datalog Viewer or Aces Connect?

Aces Connect is rated higher. FuelTech Datalog Viewer averages 4.8 out of 5 from 4 ratings, while Aces Connect averages 5.0 from 4 ratings.

### Do FuelTech Datalog Viewer or Aces Connect have ads?

Neither FuelTech Datalog Viewer nor Aces Connect shows ads.

### Which is updated more often, FuelTech Datalog Viewer or Aces Connect?

FuelTech Datalog Viewer ships an update every 9 months, and Aces Connect every 2 months. Most recently, FuelTech Datalog Viewer was updated on October 24, 2026 and Aces Connect on October 19, 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.*