# 034SPI vs BuildSheet

The clearest difference is rating: BuildSheet at 5.0 against 034SPI's 4.2. BuildSheet also leads on review sentiment (75% vs 53%) and update cadence (every 8 days vs every 2 weeks). 034SPI's advantage is in-app purchases (none vs 2) and iOS requirement (12.2 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. BuildSheet sells 2 in-app purchases, starting at $4.99 per month. 034SPI asks for nothing beyond the download.

BuildSheet holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 42 and 42 respectively. Written reviews point the same way: 53% of 034SPI's written reviews are positive against 75% of BuildSheet's.

034SPI ships an update every 2 weeks, BuildSheet every 8 days. The most recent releases landed on September 16, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | 034SPI | BuildSheet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (42 ratings)](https://appshunter.io/ios/app/034spi/id6468930588/reviews) | **[5.0 (42 ratings)](https://appshunter.io/ios/app/buildsheet-car-build-tracker/id6758694985/reviews)** |
| Number of ratings | 42 | 42 |
| Positive reviews | 52.6% of reviews | **75.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Monetization | **Free** | Freemium |
| Size | 124 MB | 148 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [034motorsport Industries, LLC](https://appshunter.io/developer/1699254218) | [JALEN JOSEPH WILLIAMS](https://appshunter.io/developer/1874511027) |

## What reviewers say

### 034SPI

[App page](https://appshunter.io/ios/app/034spi/id6468930588)

This app allows users to flash their car's ECU/TCU, change fuel maps, and configure live data displays. It also provides diagnostic tools like reading and clearing DTC codes. Compatible with Dynamic+ ECU/TCU tunes and the Dynamic+ End User Flashing Dongle.

**Highlights:** Flash ECU/TCU tunes, Change fuel octane/transmission files, Configure live data displays, High-speed data logging, Read & clear DTC codes, Perform adaptations/recalibrations

**Features:** macOS Compatibility

**In-app purchases:** none


### BuildSheet

[App page](https://appshunter.io/ios/app/buildsheet-car-build-tracker/id6758694985)

Log expenses, track modifications, and document your project car's progress from start to finish. Visualize your spending, set maintenance reminders, and share your build with a community of enthusiasts.

**Highlights:** Unlimited vehicle tracking, Expense logging by category, Real-time total build cost, Progress photos and timeline, Maintenance reminders, Community sharing, Build sheet export

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BuildSheet Pro Monthly | $4.99 | per month |
| BuildSheet Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is 034SPI free?

034SPI is free to download, with no in-app purchases.

### Is BuildSheet free?

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

### Which has better reviews, 034SPI or BuildSheet?

BuildSheet is rated higher. 034SPI averages 4.2 out of 5 from 42 ratings, while BuildSheet averages 5.0 from 42 ratings.

### Do 034SPI or BuildSheet have ads?

Neither 034SPI nor BuildSheet shows ads.

### Which is updated more often, 034SPI or BuildSheet?

034SPI ships an update every 2 weeks, and BuildSheet every 8 days. Most recently, 034SPI was updated on September 16, 2026 and BuildSheet on September 14, 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.*